Reorganization of Spice file handling (#2975)

* Fix VideoTileLayer -> VideoTileProvider
* Move kernel loading into spice files
* Define Spice IDs inside assets
* General asset cleanup and organization

data/assets/base_blank.asset

@@ -1,7 +1,7 @@
 -- This is a blank scene that that just sets up the default menus/dasboard/keys, etc.
 
 -- Specifying which other assets should be loaded in this scene
-asset.require("spice/base")
+asset.require("spice/core")
 
 asset.require("dashboard/default_dashboard")
 -- Load default key bindings applicable to most scenes

data/assets/global/openspacebookmarks.asset

@@ -7,7 +7,7 @@ local bookmarksCSV = asset.resource({
   Name = "OpenSpace Bookmarks",
   Type = "UrlSynchronization",
   UseHash = false,
-  SecondsUntilResync = 0
+  SecondsUntilResync = 0,
   Url = dataProvider
 })
 

data/assets/scene/digitaluniverse/constellationbounds.asset

@@ -1,3 +1,7 @@
+local coreKernels = asset.require("spice/core")
+
+
+
 local data = asset.resource({
   Name = "Constellation Files",
   Type = "HttpSynchronization",
@@ -22,8 +26,8 @@ local Object = {
   Transform = {
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "J2000",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = coreKernels.Frame.J2000,
+      DestinationFrame = coreKernels.Frame.Galactic
     },
     Scale = {
       Type = "StaticScale",

data/assets/scene/solarsystem/dwarf_planets/ceres/kernels.asset

@@ -1,18 +1,40 @@
-local kernels = asset.resource({
+local coreKernels = asset.require("spice/core")
+
+
+
+local data = asset.resource({
   Name = "Ceres Kernels",
   Type = "HttpSynchronization",
   Identifier = "ceres_kernels",
   Version = 1
 })
 
-asset.export(
-  "CeresKernels",
-  {
-    kernels .. "ceres_v01.tpc",
-    kernels .. "sb_ceres_140724.bsp",
-    kernels .. "sb_ceres_110211.bsp"
-  }
-)
+
+local kernels = {
+  data .. "ceres_v01.tpc",
+  data .. "sb_ceres_140724.bsp",
+  data .. "sb_ceres_110211.bsp"
+}
+
+local ID = {
+  Ceres = "CERES"
+}
+
+local Frame = {
+  Ceres = coreKernels.Frame.Ceres
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(kernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(kernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)
 
 
 

data/assets/scene/solarsystem/dwarf_planets/ceres/trail.asset

@@ -1,6 +1,6 @@
 local transforms = asset.require("scene/solarsystem/sun/transforms")
 local kernels = asset.require("./kernels")
-asset.require("spice/base")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -11,8 +11,8 @@ local CeresTrail = {
     Type = "RenderableTrailOrbit",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "CERES",
-      Observer = "SSB"
+      Target = kernels.ID.Ceres,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.2, 0.8, 0.3 },
     Period = 1680,
@@ -27,15 +27,11 @@ local CeresTrail = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.CeresKernels)
-
   openspace.addSceneGraphNode(CeresTrail)
 end)
 
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(CeresTrail)
-
-  openspace.spice.unloadKernel(kernels.CeresKernels)
 end)
 
 asset.export(CeresTrail)

data/assets/scene/solarsystem/dwarf_planets/ceres/transforms.asset

@@ -1,6 +1,8 @@
 local transforms = asset.require("scene/solarsystem/sun/transforms")
 local kernels = asset.require("./kernels")
-asset.require("spice/base")
+local coreKernels = asset.require("spice/core")
+
+
 
 local CeresPosition = {
   Identifier = "CeresPosition",
@@ -8,13 +10,13 @@ local CeresPosition = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "CERES",
-      Observer = "SSB"
+      Target = kernels.ID.Ceres,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "IAU_CERES",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Ceres,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   GUI = {
@@ -26,15 +28,11 @@ local CeresPosition = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.CeresKernels)
-
   openspace.addSceneGraphNode(CeresPosition)
 end)
 
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(CeresPosition)
-
-  openspace.spice.unloadKernel(kernels.CeresKernels)
 end)
 
 asset.export(CeresPosition)

data/assets/scene/solarsystem/dwarf_planets/pluto/charon/charon.asset

@@ -1,6 +1,7 @@
 local transforms = asset.require("../transforms")
-asset.require("spice/base")
 asset.require("../trail")
+local kernels = asset.require("../kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -17,13 +18,13 @@ local Charon = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "CHARON",
-      Observer = "PLUTO BARYCENTER"
+      Target = kernels.ID.Charon,
+      Observer = kernels.ID.PlutoBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "IAU_CHARON",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Charon,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Renderable = {

data/assets/scene/solarsystem/dwarf_planets/pluto/charon/charon_trail.asset

@@ -1,6 +1,5 @@
 local transforms = asset.require("../transforms")
-asset.require("spice/base")
-
+local kernels = asset.require("../kernels")
 
 
 local CharonBarycentricTrail = {
@@ -10,8 +9,8 @@ local CharonBarycentricTrail = {
     Type = "RenderableTrailOrbit",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "CHARON",
-      Observer = "PLUTO BARYCENTER"
+      Target = kernels.ID.Charon,
+      Observer = kernels.ID.PlutoBarycenter
     },
     Color = { 0.00, 0.62, 1.00 },
     Period = 6.38723,
@@ -46,8 +45,7 @@ asset.export(CharonBarycentricTrail)
 asset.meta = {
   Name = "Charon Barycentric Trail",
   Version = "1.0",
-  Description = [[Trail of Charon as observed by Pluto Barycenter. Data from
-    NASA Spice (see base spice asset)]],
+  Description = "Trail of Charon as observed by Pluto Barycenter",
   Author = "OpenSpace Team",
   URL = "http://openspaceproject.com",
   License = "MIT license"

data/assets/scene/solarsystem/dwarf_planets/pluto/kernels.asset

@@ -1,17 +1,51 @@
-local kernels = asset.resource({
+local coreKernels = asset.require("spice/core")
+
+
+
+local data = asset.resource({
   Name = "Pluto Kernels",
   Type = "HttpSynchronization",
   Identifier = "pluto_kernels",
   Version = 1
 })
 
-local PlutoKernels = {
-  kernels .. "NavPE_de433_od122.bsp",
-  kernels .. "NavSE_plu047_od122.bsp",
-  kernels .. "ssd_jpl_nasa_gov_plu043.bsp"
+
+local kernels = {
+  data .. "NavPE_de433_od122.bsp",
+  data .. "NavSE_plu047_od122.bsp",
+  data .. "ssd_jpl_nasa_gov_plu043.bsp"
 }
 
-asset.export("PlutoKernels", PlutoKernels)
+local ID = {
+  PlutoBarycenter = coreKernels.ID.PlutoBarycenter,
+  Charon = "CHARON",
+  Hydra = "HYDRA",
+  Styx = "STYX",
+  Nix = "NIX",
+  Kerberos = "KERBEROS",
+  Pluto = coreKernels.ID.Pluto
+}
+
+local Frame = {
+  Pluto = coreKernels.Frame.Pluto,
+  Charon = coreKernels.Frame.Charon,
+  Hydra = coreKernels.Frame.Hydra,
+  Styx = coreKernels.Frame.Styx,
+  Nix = coreKernels.Frame.Nix,
+  Kerberos = coreKernels.Frame.Kerberos
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(kernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(kernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)
 
 
 

data/assets/scene/solarsystem/dwarf_planets/pluto/minor/hydra.asset

@@ -9,8 +9,8 @@ local Hydra = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "HYDRA",
-      Observer = "PLUTO BARYCENTER"
+      Target = kernels.ID.Hydra,
+      Observer = kernels.ID.PlutoBarycenter
     }
   },
   Renderable = {
@@ -32,8 +32,8 @@ local HydraTrail = {
     Type = "RenderableTrailOrbit",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "HYDRA",
-      Observer = "PLUTO BARYCENTER",
+      Target = kernels.ID.Hydra,
+      Observer = kernels.ID.PlutoBarycenter
     },
     Color = { 0.00, 0.62, 1.00 },
     Period = 38.20177,
@@ -79,8 +79,6 @@ local HydraLabel = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.PlutoKernels)
-
   openspace.addSceneGraphNode(Hydra)
   openspace.addSceneGraphNode(HydraTrail)
   openspace.addSceneGraphNode(HydraLabel)
@@ -90,8 +88,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(HydraLabel)
   openspace.removeSceneGraphNode(HydraTrail)
   openspace.removeSceneGraphNode(Hydra)
-
-  openspace.spice.unloadKernel(kernels.PlutoKernels)
 end)
 
 asset.export(Hydra)
@@ -102,8 +98,7 @@ asset.export(HydraTrail)
 asset.meta = {
   Name = "Hydra",
   Version = "1.0",
-  Description = [[Globe and trail for Pluto's moon Hydra. Data from NASA Spice (see base
-    spice asset)]],
+  Description = "Globe and trail for Pluto's moon Hydra",
   Author = "OpenSpace Team",
   URL = "http://openspaceproject.com",
   License = "MIT license"

data/assets/scene/solarsystem/dwarf_planets/pluto/minor/kerberos.asset

@@ -1,4 +1,5 @@
 local transforms = asset.require("../transforms")
+local kernels = asset.require("../kernels")
 
 
 
@@ -8,8 +9,8 @@ local Kerberos = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "KERBEROS",
-      Observer = "PLUTO BARYCENTER"
+      Target = kernels.ID.Kerberos,
+      Observer = kernels.ID.PlutoBarycenter
     }
   },
   Renderable = {
@@ -31,8 +32,8 @@ local KerberosTrail = {
     Type = "RenderableTrailOrbit",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "KERBEROS",
-      Observer = "PLUTO BARYCENTER",
+      Target = kernels.ID.Kerberos,
+      Observer = kernels.ID.PlutoBarycenter
     },
     Color = { 0.00, 0.62, 1.00 },
     Period = 32.16756,
@@ -98,8 +99,7 @@ asset.export(KerberosLabel)
 asset.meta = {
   Name = "Kerberos",
   Version = "1.0",
-  Description = [[Globe and trail for Pluto's moon Kerberos. Data from NASA Spice (see
-    base spice asset)]],
+  Description = "Globe and trail for Pluto's moon Kerberos",
   Author = "OpenSpace Team",
   URL = "http://openspaceproject.com",
   License = "MIT license"

data/assets/scene/solarsystem/dwarf_planets/pluto/minor/nix.asset

@@ -1,4 +1,5 @@
 local transforms = asset.require("../transforms")
+local kernels = asset.require("../kernels")
 
 
 
@@ -8,8 +9,8 @@ local Nix = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "NIX",
-      Observer = "PLUTO BARYCENTER"
+      Target = kernels.ID.Nix,
+      Observer = kernels.ID.PlutoBarycenter
     }
   },
   Renderable = {
@@ -31,8 +32,8 @@ local NixTrail = {
     Type = "RenderableTrailOrbit",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "NIX",
-      Observer = "PLUTO BARYCENTER",
+      Target = kernels.ID.Nix,
+      Observer = kernels.ID.PlutoBarycenter
     },
     Color = { 0.00, 0.62, 1.00 },
     Period = 24.85463,
@@ -98,8 +99,7 @@ asset.export(NixLabel)
 asset.meta = {
   Name = "Nix",
   Version = "1.0",
-  Description = [[Globe and trail for Pluto's moon Nix. Data from NASA Spice (see base
-    spice asset)]],
+  Description = "Globe and trail for Pluto's moon Nix",
   Author = "OpenSpace Team",
   URL = "http://openspaceproject.com",
   License = "MIT license"

data/assets/scene/solarsystem/dwarf_planets/pluto/minor/styx.asset

@@ -1,4 +1,6 @@
 local transforms = asset.require("../transforms")
+local kernels = asset.require("../kernels")
+
 
 
 local Styx = {
@@ -7,8 +9,8 @@ local Styx = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "STYX",
-      Observer = "PLUTO BARYCENTER"
+      Target = kernels.ID.Styx,
+      Observer = kernels.ID.PlutoBarycenter
     }
   },
   Renderable = {
@@ -30,8 +32,8 @@ local StyxTrail = {
     Type = "RenderableTrailOrbit",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "STYX",
-      Observer = "PLUTO BARYCENTER",
+      Target = kernels.ID.Styx,
+      Observer = kernels.ID.PlutoBarycenter
     },
     Color = { 0.00, 0.62, 1.00 },
     Period = 20.16155,
@@ -97,8 +99,7 @@ asset.export(StyxLabel)
 asset.meta = {
   Name = "Styx",
   Version = "1.0",
-  Description = [[Globe and trail for Pluto's moon Styx. Data from NASA Spice (see base
-    spice asset)]],
+  Description = "Globe and trail for Pluto's moon Styx",
   Author = "OpenSpace Team",
   URL = "http://openspaceproject.com",
   License = "MIT license"

data/assets/scene/solarsystem/dwarf_planets/pluto/pluto.asset

@@ -1,5 +1,5 @@
 local transforms = asset.require("./transforms")
-asset.require("spice/base")
+local coreKernels = asset.require("spice/core")
 asset.require("./trail")
 
 
@@ -18,13 +18,13 @@ local Pluto = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "PLUTO",
-      Observer = "PLUTO BARYCENTER"
+      Target = coreKernels.ID.Pluto,
+      Observer = coreKernels.ID.PlutoBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "IAU_PLUTO",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = coreKernels.Frame.Pluto,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Renderable = {

data/assets/scene/solarsystem/dwarf_planets/pluto/pluto_trail.asset

@@ -1,5 +1,5 @@
 local transforms = asset.require("./transforms")
-asset.require("spice/base")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -10,8 +10,8 @@ local PlutoTrailBarycentric = {
     Type = "RenderableTrailOrbit",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "PLUTO",
-      Observer = "PLUTO BARYCENTER"
+      Target = coreKernels.ID.Pluto,
+      Observer = coreKernels.ID.PlutoBarycenter
     },
     Color = { 0.00, 0.62, 1.00 },
     Period = 6.38723,
@@ -41,8 +41,7 @@ asset.export(PlutoTrailBarycentric)
 asset.meta = {
   Name = "Pluto Barycentric Trail",
   Version = "1.0",
-  Description = [[Trail of Pluto as observed by it's Barrycenter. Data from NASA Spice
-    (see base spice asset)]],
+  Description = "Trail of Pluto as observed by its Barycenter",
   Author = "OpenSpace Team",
   URL = "http://openspaceproject.com",
   License = "MIT license"

data/assets/scene/solarsystem/dwarf_planets/pluto/pluto_trail_kepler.asset

@@ -1,6 +1,4 @@
 local transforms = asset.require("scene/solarsystem/sun/transforms")
-local kernels = asset.require("./kernels").PlutoKernels
-asset.require("spice/base")
 
 
 

data/assets/scene/solarsystem/dwarf_planets/pluto/trail.asset

@@ -1,6 +1,5 @@
 local transforms = asset.require("scene/solarsystem/sun/transforms")
-local kernels = asset.require("./kernels")
-asset.require("spice/base")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -11,8 +10,8 @@ local PlutoBarycenterTrail = {
     Type = "RenderableTrailOrbit",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "PLUTO BARYCENTER",
-      Observer = "SSB"
+      Target = coreKernels.ID.PlutoBarycenter,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.3, 0.7, 0.3 },
     Period = 365.25,
@@ -29,15 +28,11 @@ local PlutoBarycenterTrail = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.PlutoKernels)
-
   openspace.addSceneGraphNode(PlutoBarycenterTrail)
 end)
 
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(PlutoBarycenterTrail)
-
-  openspace.spice.unloadKernel(kernels.PlutoKernels)
 end)
 
 asset.export(PlutoBarycenterTrail)
@@ -47,8 +42,7 @@ asset.export(PlutoBarycenterTrail)
 asset.meta = {
   Name = "Pluto Barycenter Trail",
   Version = "1.0",
-  Description = [[Trail of Pluto Barycenter as observed by the Sun. Data from NASA Spice
-    (see base spice asset)]],
+  Description = "Trail of Pluto Barycenter as observed by the Sun",
   Author = "OpenSpace Team",
   URL = "http://openspaceproject.com",
   License = "MIT license"

data/assets/scene/solarsystem/dwarf_planets/pluto/transforms.asset

@@ -1,6 +1,5 @@
 local transforms = asset.require("scene/solarsystem/sun/transforms")
-local kernels = asset.require("./kernels")
-asset.require("spice/base")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -10,8 +9,8 @@ local PlutoBarycenter = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "PLUTO BARYCENTER",
-      Observer = "SSB"
+      Target = coreKernels.ID.PlutoBarycenter,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   GUI = {
@@ -22,15 +21,11 @@ local PlutoBarycenter = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.PlutoKernels)
-
   openspace.addSceneGraphNode(PlutoBarycenter)
 end)
 
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(PlutoBarycenter)
-
-  openspace.spice.unloadKernel(kernels.PlutoKernels)
 end)
 
 asset.export(PlutoBarycenter)

data/assets/scene/solarsystem/heliosphere/bastille_day/fluxnodeslegend.asset

@@ -1,7 +1,3 @@
-asset.require("spice/base")
-
-
-
 local TexturesPath = asset.resource({
   Type = "HttpSynchronization",
   Name = "Streamnodes textures",

data/assets/scene/solarsystem/heliosphere/bastille_day/lightindicator.asset

@@ -1,5 +1,6 @@
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
 local earthTransforms = asset.require("scene/solarsystem/planets/earth/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -13,8 +14,8 @@ local TravelSpeedIndicator = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "SUN",
-      Observer = "SSB"
+      Target = coreKernels.ID.Sun,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   Renderable = {

data/assets/scene/solarsystem/missions/apollo/11/apollo11.asset

@@ -1,4 +1,3 @@
-asset.require("spice/base")
 asset.require("../actions")
 asset.require("./actions")
 local sun = asset.require("scene/solarsystem/sun/sun")
@@ -6,6 +5,7 @@ local moonTransforms = asset.require("scene/solarsystem/planets/earth/moon/moon"
 local descentKeyframes = asset.require("./lem_descent")
 local descentRotationKeyframes = asset.require("./lem_descent_rotation")
 local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -25,8 +25,6 @@ local lemModel = asset.resource({
 
 
 --landing - 1969-07-20T20:17:40
-local ApolloSpiceId = -911
-local ApolloLemSpiceId = -911500
 
 local Apollo11Position = {
   Identifier = "Apollo11Position",
@@ -39,15 +37,15 @@ local Apollo11Position = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = ApolloSpiceId,
-      Observer = "MOON",
-      Frame = "MOON_ME"
+      Target = kernels.ID.Apollo11,
+      Observer = coreKernels.ID.Moon,
+      Frame = kernels.ID.MoonME
     }
   },
   GUI = {
-    Hidden = true,
     Name = "Apollo 11",
-    Path = "/Solar System/Missions/Apollo/11"
+    Path = "/Solar System/Missions/Apollo/11",
+    Hidden = true
   }
 }
 
@@ -91,9 +89,9 @@ local Apollo11MoonTrail = {
     Enabled = false,
     Translation = {
       Type = "SpiceTranslation",
-      Target = ApolloSpiceId,
-      Observer = "MOON",
-      Frame = "IAU_MOON"
+      Target = kernels.ID.Apollo11,
+      Observer = coreKernels.ID.Moon,
+      Frame = coreKernels.Frame.Moon
     },
     Color = { 0.180000,0.510000,0.750000 },
     StartTime = "1969 JUL 19 19:38:29.183",
@@ -116,9 +114,9 @@ local lemTranslation = {
     -- a 10s linear transition to the location where the descentKeyframes start.
     ["1969 JUL 20 20:14:30"] = {
       Type = "SpiceTranslation",
-      Target = ApolloLemSpiceId,
-      Observer = "MOON",
-      Frame = "IAU_MOON"
+      Target = kernels.ID.Apollo11LEM,
+      Observer = coreKernels.ID.Moon,
+      Frame = coreKernels.Frame.Moon
     },
     ["1969 JUL 20 20:14:40"] = {
       Type = "TimelineTranslation",
@@ -139,13 +137,13 @@ local Apollo11LemTrail = {
   Parent = moonTransforms.Moon.Identifier,
   Renderable = {
     Type = "RenderableTrailTrajectory",
+    Enabled = false,
     Translation = lemTranslation,
     Color = { 0.780000,0.940000,0.340000 },
     StartTime = "1969 JUL 20 19:10:25.183",
     EndTime = "1969 JUL 20 20:17:46.183",
     SampleInterval = 2,
-    EnableFade = false,
-    Enabled = false
+    EnableFade = false
   },
   GUI = {
     Name = "Apollo 11 Lunar Lander Trail",
@@ -240,8 +238,6 @@ local Apollo11LemLandedModel = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.kernels)
-
   openspace.addSceneGraphNode(Apollo11Position)
   openspace.addSceneGraphNode(Apollo11LemPosition)
   openspace.addSceneGraphNode(Apollo11Model)
@@ -259,8 +255,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(Apollo11Model)
   openspace.removeSceneGraphNode(Apollo11LemPosition)
   openspace.removeSceneGraphNode(Apollo11Position)
-
-  openspace.spice.unloadKernel(kernels.kernels)
 end)
 
 asset.export(Apollo11Position)

data/assets/scene/solarsystem/missions/apollo/11/kernels.asset

@@ -1,4 +1,4 @@
-local kernelsFolder = asset.resource({
+local data = asset.resource({
   Name = "Apollo Kernels",
   Type = "HttpSynchronization",
   Identifier = "apollo_11_spice",
@@ -7,11 +7,30 @@ local kernelsFolder = asset.resource({
 
 
 local kernels = {
-  kernelsFolder .. "moon_080317.tf",
-  kernelsFolder .. "apollo_naif_ids.tf",
-  kernelsFolder .. "moon_pa_de421_1900-2050.bpc",
-  kernelsFolder .. "apollo11_orbits_full9km.bsp",
-  kernelsFolder .. "apollo11_orbits_lm9km.bsp"
+  data .. "moon_080317.tf",
+  data .. "apollo_naif_ids.tf",
+  data .. "moon_pa_de421_1900-2050.bpc",
+  data .. "apollo11_orbits_full9km.bsp",
+  data .. "apollo11_orbits_lm9km.bsp"
 }
 
-asset.export("kernels", kernels)
+local ID = {
+  Apollo11 = -911,
+  Apollo11LEM = -911500
+}
+
+local Frame = {
+  MoonME = "MOON_ME"
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(kernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(kernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)

data/assets/scene/solarsystem/missions/apollo/11/lem.asset

@@ -18,7 +18,7 @@ local Apollo11Lem = {
     Translation = {
       Type = "GlobeTranslation",
       Globe = moon_asset.Moon.Identifier,
-      Longitude = -360+23.47306,
+      Longitude = -360 + 23.47306,
       Latitude = 0.67402,
       Altitude = -1927.65,
       UseHeightMap = false

data/assets/scene/solarsystem/missions/apollo/15/apollo15.asset

@@ -1,8 +1,8 @@
-asset.require("spice/base")
 asset.require("../actions")
 local moonTransforms = asset.require("scene/solarsystem/planets/earth/moon/moon")
 local sun = asset.require("scene/solarsystem/sun/sun")
-local kernels = asset.require("scene/solarsystem/missions/apollo/15/kernels")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -20,14 +20,14 @@ local Apollo15 = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "APOLLO 15",
-      Observer = "MOON",
-      Frame = "IAU_MOON"
+      Target = kernels.ID.Apollo15,
+      Observer = coreKernels.ID.Moon,
+      Frame = coreKernels.Frame.Moon
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "A15_METRIC",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.ID.Apollo15Metric,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Renderable = {
@@ -57,9 +57,9 @@ local Apollo15Trail = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "APOLLO 15",
-      Observer = "MOON",
-      Frame = "IAU_MOON"
+      Target = kernels.ID.Apollo15,
+      Observer = coreKernels.ID.Moon,
+      Frame = coreKernels.Frame.Moon
     },
     Color = { 0.70, 0.50, 0.20 },
     StartTime = "1971 JUL 26",
@@ -73,8 +73,6 @@ local Apollo15Trail = {
 }
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.kernels)
-
   openspace.addSceneGraphNode(Apollo15)
   openspace.addSceneGraphNode(Apollo15Trail)
 end)
@@ -82,8 +80,6 @@ end)
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(Apollo15Trail)
   openspace.removeSceneGraphNode(Apollo15)
-
-  openspace.spice.unloadKernel(kernels.kernels)
 end)
 
 asset.export(Apollo15)

data/assets/scene/solarsystem/missions/apollo/15/kernels.asset

@@ -1,4 +1,4 @@
-local folder = asset.resource({
+local data = asset.resource({
   Name = "Apollo Kernels",
   Type = "HttpSynchronization",
   Identifier = "apollo_spice",
@@ -7,87 +7,31 @@ local folder = asset.resource({
 
 
 local kernels = {
-  folder .. "apollo15.0001.tsc",
-
-  -- folder .. "AS15-P_v01.bc",
-  folder .. "apollo15.0001.tf",
-  folder .. "apollo15MetricAddendum002.ti",
-  -- folder .. "apollo15PanoramicAddendum001.ti",
-  folder .. "apollo15_metric.0002.ti",
-  -- folder .. "apollo15_panoramic.0001.ti",
-  folder .. "apollo15-1.bsp",
-  folder .. "AS15-M_v01.bc"
-  -- folder .. "AS15-M_v01.bsp"
+  data .. "apollo15.0001.tsc",
+  data .. "apollo15.0001.tf",
+  data .. "apollo15MetricAddendum002.ti",
+  data .. "apollo15_metric.0002.ti",
+  data .. "apollo15-1.bsp",
+  data .. "AS15-M_v01.bc"
 }
 
--- local kernels = {
--- --sclk
--- folder .. "apollo15.0001.tsc",
+local ID = {
+  Apollo15 = -915
+}
 
--- --pck
--- folder .. "moon_080317.tf",
--- folder .. "moon_assoc_me.tf",
+local Frame = {
+  Apollo15Nadir = -915240,
+  Apollo15Metric = "A15_METRIC"
+}
 
--- --ik
--- folder .. "apollo15_metric_v2.0001.ti",
--- folder .. "apollo15_panoramic.0001.ti",
 
--- --tspk
--- folder .. "de421.bsp",
--- folder .. "moon_pa_de421_1900-2050.bpc",
+asset.onInitialize(function()
+  openspace.spice.loadKernel(kernels)
+end)
 
--- --iak
--- folder .. "apollo15MetricAddendum002.ti",
--- folder .. "apolloPanAddendum001.ti",
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(kernels)
+end)
 
--- --fk
--- folder .. "apollo15_v2.0001.tf",
--- folder .. "apollo15_v2.0002.tf",
-
--- --spk
--- folder .. "AS15_M_REV23_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV4.bsp             ",
--- folder .. "AS15_M_REV70_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV04_v2.bsp         ",
--- folder .. "AS15_M_REV27_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV44_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV71_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV15_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV33_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV50_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV71_SMITHED_V02.bsp",
--- folder .. "AS15_M_REV15_v2.bsp         ",
--- folder .. "AS15_M_REV34_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV60_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV72_v2.bsp",
--- folder .. "AS15_M_REV16_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV35_SMITHED_V02.bsp",
--- folder .. "AS15_M_REV62_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV22_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV38_SMITHED_V01.bsp",
--- folder .. "AS15_M_REV63_SMITHED_V01.bsp",
-
--- --ck
--- folder .. "AS15_M_REV04_SMITHED_V01.bc",
--- folder .. "AS15_M_REV15_SMITHED_V01.bc",
--- folder .. "AS15_M_REV16_SMITHED_V01.bc",
--- folder .. "AS15_M_REV22_SMITHED_V01.bc",
--- folder .. "AS15_M_REV23_SMITHED_V01.bc",
--- folder .. "AS15_M_REV27_SMITHED_V01.bc",
--- folder .. "AS15_M_REV33_SMITHED_V01.bc",
--- folder .. "AS15_M_REV34_SMITHED_V01.bc",
--- folder .. "AS15_M_REV35_SMITHED_V01.bc",
--- folder .. "AS15_M_REV35_SMITHED_V02.bc",
--- folder .. "AS15_M_REV38_SMITHED_V01.bc",
--- folder .. "AS15_M_REV44_SMITHED_V01.bc",
--- folder .. "AS15_M_REV50_SMITHED_V01.bc",
--- folder .. "AS15_M_REV60_SMITHED_V01.bc",
--- folder .. "AS15_M_REV62_SMITHED_V01.bc",
--- folder .. "AS15_M_REV63_SMITHED_V01.bc",
--- folder .. "AS15_M_REV70_SMITHED_V01.bc",
--- folder .. "AS15_M_REV71_SMITHED_V01.bc",
--- folder .. "AS15_M_REV71_SMITHED_V02.bc",
--- folder .. "AS15_M_REV72_v2.bc",
--- }
-
-asset.export("kernels", kernels)
+asset.export("ID", ID)
+asset.export("Frame", Frame)

data/assets/scene/solarsystem/missions/apollo/8/kernels.asset

@@ -1,4 +1,4 @@
-local kernelsFolder = asset.resource({
+local data = asset.resource({
   Name = "Apollo Kernels",
   Type = "HttpSynchronization",
   Identifier = "apollo_spice",
@@ -7,12 +7,31 @@ local kernelsFolder = asset.resource({
 
 
 local kernels = {
-  kernelsFolder .. "moon_080317.tf",
-  kernelsFolder .. "apollo8.tf",
-  kernelsFolder .. "moon_pa_de421_1900-2050.bpc",
-  kernelsFolder .. "apollo8.tsc",
-  kernelsFolder .. "apollo8.bsp",
-  kernelsFolder .. "apollo8_earthrise.bc"
+  data .. "moon_080317.tf",
+  data .. "apollo8.tf",
+  data .. "moon_pa_de421_1900-2050.bpc",
+  data .. "apollo8.tsc",
+  data .. "apollo8.bsp",
+  data .. "apollo8_earthrise.bc"
 }
 
-asset.export("kernels", kernels)
+local ID = {
+  Apollo8 = -908
+}
+
+local Frame = {
+  Apollo8 = -908000,
+  Apollo8Earthrise = "A8_EARTHRISE"
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(kernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(kernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)

data/assets/scene/solarsystem/missions/apollo/8/launch_model.asset

@@ -1,6 +1,7 @@
 local earth_transforms = asset.require("scene/solarsystem/planets/earth/transforms")
 local sun = asset.require("scene/solarsystem/sun/sun")
 local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -25,9 +26,9 @@ local Apollo8Launch = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = ApolloSpiceId,
-      Observer = "EARTH",
-      Frame = "IAU_EARTH"
+      Target = kernels.ID.Apollo8,
+      Observer = coreKernels.ID.Earth,
+      Frame = coreKernels.Frame.Earth
     }
   },
   GUI = {
@@ -68,8 +69,6 @@ local Apollo8LaunchModel = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.kernels)
-
   openspace.addSceneGraphNode(Apollo8Launch)
   openspace.addSceneGraphNode(Apollo8LaunchModel)
 end)
@@ -77,8 +76,6 @@ end)
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(Apollo8LaunchModel)
   openspace.removeSceneGraphNode(Apollo8Launch)
-
-  openspace.spice.unloadKernel(kernels.kernels)
 end)
 
 asset.export(Apollo8Launch)

data/assets/scene/solarsystem/missions/apollo/8/model.asset

@@ -1,6 +1,7 @@
 local earth_transforms = asset.require("scene/solarsystem/planets/earth/transforms")
 local sun = asset.require("scene/solarsystem/sun/sun")
 local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -12,8 +13,6 @@ local models = asset.resource({
 })
 
 
-local ApolloSpiceId = -908
-
 local Apollo8 = {
   Identifier = "Apollo8",
   Parent = earth_transforms.EarthBarycenter.Identifier,
@@ -25,14 +24,14 @@ local Apollo8 = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = ApolloSpiceId,
-      Observer = "EARTH BARYCENTER",
-      Frame = "GALACTIC"
+      Target = kernels.ID.Apollo8,
+      Observer = coreKernels.ID.EarthBarycenter,
+      Frame = coreKernels.Frame.Galactic
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "A8_EARTHRISE",
-      DestinationFrame = "GALACTIC",
+      SourceFrame = kernels.Frame.Apollo8Earthrise,
+      DestinationFrame = coreKernels.Frame.Galactic,
       TimeFrame = {
         -- The orientation of Apollo 8 is only available during the few minutes
         -- when the Earthrise picture was taken.
@@ -96,8 +95,6 @@ local Apollo8Pivot = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.kernels)
-
   openspace.addSceneGraphNode(Apollo8)
   openspace.addSceneGraphNode(Apollo8Model)
   openspace.addSceneGraphNode(Apollo8Pivot)
@@ -107,8 +104,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(Apollo8Pivot)
   openspace.removeSceneGraphNode(Apollo8Model)
   openspace.removeSceneGraphNode(Apollo8)
-
-  openspace.spice.unloadKernel(kernels.kernels)
 end)
 
 asset.export(Apollo8)

data/assets/scene/solarsystem/missions/apollo/8/trails.asset

@@ -1,11 +1,10 @@
 local earth_transforms = asset.require("scene/solarsystem/planets/earth/transforms")
 local moon_transforms = asset.require("scene/solarsystem/planets/earth/moon/moon")
 local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
-local ApolloSpiceId = -908
-
 local LaunchTrail = {
   Identifier = "Apollo8LaunchTrail",
   Parent = earth_transforms.EarthIAU.Identifier,
@@ -13,9 +12,9 @@ local LaunchTrail = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = ApolloSpiceId,
-      Observer = "EARTH",
-      Frame = "IAU_EARTH"
+      Target = kernels.ID.Apollo8,
+      Observer = coreKernels.ID.Earth,
+      Frame = coreKernels.Frame.Earth
     },
     Color = { 0.70, 0.50, 0.20 },
     StartTime = "1968 DEC 21 12:51:00",
@@ -37,9 +36,9 @@ local MoonTrail = {
     Enabled = false,
     Translation = {
       Type = "SpiceTranslation",
-      Target = ApolloSpiceId,
-      Observer = "MOON",
-      Frame = "IAU_MOON"
+      Target = kernels.ID.Apollo8,
+      Observer = coreKernels.ID.Moon,
+      Frame = coreKernels.Frame.Moon
     },
     Color = { 0.70, 0.50, 0.20 },
     StartTime = "1968 DEC 23",
@@ -60,9 +59,9 @@ local EarthBarycenterTrail = {
     Enabled = false,
     Translation = {
       Type = "SpiceTranslation",
-      Target = ApolloSpiceId,
-      Observer = "EARTH",
-      Frame = "GALACTIC"
+      Target = kernels.ID.Apollo8,
+      Observer = coreKernels.ID.Earth,
+      Frame = coreKernels.Frame.Galactic
     },
     Color = { 0.8, 0.2, 0.2 },
     StartTime = "1968 DEC 21",
@@ -77,8 +76,6 @@ local EarthBarycenterTrail = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.kernels)
-
   openspace.addSceneGraphNode(LaunchTrail)
   openspace.addSceneGraphNode(MoonTrail)
   openspace.addSceneGraphNode(EarthBarycenterTrail)
@@ -88,8 +85,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(EarthBarycenterTrail)
   openspace.removeSceneGraphNode(MoonTrail)
   openspace.removeSceneGraphNode(LaunchTrail)
-
-  openspace.spice.unloadKernel(kernels.kernels)
 end)
 
 asset.export(LaunchTrail)

data/assets/scene/solarsystem/missions/artemis/kernels.asset

@@ -0,0 +1,22 @@
+local data = asset.resource({
+  Name = "Artemis Kernels",
+  Type = "HttpSynchronization",
+  Identifier = "artemis_1_kernels",
+  Version = 1
+})
+
+
+local ID = {
+  Artemis = -1023
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(data .. "artemis.bsp")
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(data .. "artemis.bsp")
+end)
+
+asset.export("ID", ID)

data/assets/scene/solarsystem/missions/artemis/trail.asset

@@ -1,18 +1,10 @@
-asset.require("spice/base")
 local earthTransforms = asset.require("scene/solarsystem/planets/earth/transforms")
 local moonTransforms = asset.require("scene/solarsystem/planets/earth/moon/moon")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
-local ArtemisSpiceId = "-1023"
-
-local kernels = asset.resource({
-  Name = "Artemis Kernels",
-  Type = "HttpSynchronization",
-  Identifier = "artemis_1_kernels",
-  Version = 1
-})
-
 local ArtemisEarthTrail = {
   Identifier = "ArtemisEarthTrail",
   Parent = earthTransforms.EarthCenter.Identifier,
@@ -20,9 +12,9 @@ local ArtemisEarthTrail = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = ArtemisSpiceId,
-      Observer = "EARTH",
-      Frame = "GALACTIC"
+      Target = kernels.ID.Artemis,
+      Observer = coreKernels.ID.Earth,
+      Frame = coreKernels.ID.Galactic
     },
     Color = { 0.2, 0.78, 0.635 },
     Fade = 7.0,
@@ -44,9 +36,9 @@ local ArtemisMoonTrail= {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = ArtemisSpiceId,
-      Observer = "MOON",
-      Frame = "IAU_MOON"
+      Target = kernels.ID.Artemis,
+      Observer = coreKernels.ID.Moon,
+      Frame = coreKernels.Frame.Moon
     },
     Color = { 0.78, 0.43, 0.20 },
     Fade = 7.0,
@@ -63,8 +55,6 @@ local ArtemisMoonTrail= {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels .. "artemis.bsp")
-
   openspace.addSceneGraphNode(ArtemisEarthTrail)
   openspace.addSceneGraphNode(ArtemisMoonTrail)
 end)
@@ -72,8 +62,6 @@ end)
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(ArtemisMoonTrail)
   openspace.removeSceneGraphNode(ArtemisEarthTrail)
-
-  openspace.spice.unloadKernel(kernels .. "artemis.bsp")
 end)
 
 asset.export(ArtemisEarthTrail)

data/assets/scene/solarsystem/missions/artemis/transforms.asset

@@ -1,48 +1,34 @@
-asset.require("spice/base")
 local earthTransforms = asset.require("scene/solarsystem/planets/earth/transforms")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
-local kernels = asset.resource({
-  Name = "Artemis Kernels",
-  Type = "HttpSynchronization",
-  Identifier = "artemis_1_kernels",
-  Version = 1
-})
-
-
-local ArtemisSpiceId = "-1023"
-
 local ArtemisPosition = {
   Identifier = "ArtemisPosition",
   Parent = earthTransforms.EarthCenter.Identifier,
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = ArtemisSpiceId,
-      Observer = "EARTH",
-      Frame = "GALACTIC"
+      Target = kernels.ID.Artemis,
+      Observer = coreKernels.ID.Earth,
+      Frame = coreKernels.Frame.Galactic
     }
   },
   GUI = {
     Name = "Artemis-1 Position",
     Path = "/Solar System/Missions/Artemis",
-    Hidden = true,
-    Description = "Artemis-1 position relative to Earth"
+    Hidden = true
   }
 }
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels .. "artemis.bsp")
-
   openspace.addSceneGraphNode(ArtemisPosition)
 end)
 
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(ArtemisPosition)
-
-  openspace.spice.unloadKernel(kernels .. "artemis.bsp")
 end)
 
 asset.export(ArtemisPosition)

data/assets/scene/solarsystem/missions/dawn/dawn.asset

@@ -1,16 +1,11 @@
 asset.require("scene/solarsystem/missions/dawn/mission")
 local transforms = asset.require("scene/solarsystem/sun/transforms")
 local sun = asset.require("scene/solarsystem/sun/sun")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
-local kernels = asset.resource({
-  Name = "Dawn Kernels",
-  Type = "HttpSynchronization",
-  Identifier = "dawn_kernels",
-  Version = 3
-})
-
 local textures = asset.resource({
   Name = "Dawn Textures",
   Type = "HttpSynchronization",
@@ -26,49 +21,6 @@ local models = asset.resource({
 })
 
 
-local KernelFiles = {
-  kernels .. "dawn_ref_070926-150201_070829.bsp",
-
-  --ik
-  kernels .. "dawn_fc_v10.ti",
-
-  -- SPK
-  kernels .. "dawn_rec_070927_070930_081218_v1.bsp",
-  -- kernels .. "dawn_rec_110201_110328_110328_v1.bsp",
-  -- kernels .. "dawn_rec_110328_110419_110420_v1.bsp",
-  kernels .. "dawn_rec_110416_110802_110913_v1.bsp",
-  kernels .. "dawn_rec_110802_110831_110922_v1.bsp",
-  -- kernels .. "spk/dawn_rec_110831_110928_111221_v1.bsp",
-  -- kernels .. "dawn_rec_110928_111102_120615_v1.bsp",
-  -- kernels .. "dawn_rec_111102_111210_120618_v1.bsp",
-  -- kernels .. "dawn_rec_111211_120501_120620_v1.bsp",
-  kernels .. "dawn_rec_120724_120913_121213_v1.bsp",
-
-  -- FK
-  kernels .. "dawn_v12.tf",
-
-  --SCLK
-  kernels .. "dawn_203_sclkscet_00039.tsc",
-
-  -- CK
-  kernels .. "dawn_sc_070927_070930.bc",
-  kernels .. "dawn_sc_110801_110807.bc",
-  kernels .. "dawn_sc_110808_110814.bc",
-  kernels .. "dawn_sc_120910_120916.bc",
-
-  -- space craft CK files
-  -- kernels .. "dawn_sc_070927_070930.bc",
-  -- kernels .. "dawn_sc_110801_110807.bc",
-  -- kernels .. "dawn_sc_110808_110814.bc",
-  -- kernels .. "dawn_sc_120910_120916.bc",
-
-  -- Solar array rotation kernels
-  kernels .. "dawn_sa_070927_070930.bc",
-  -- kernels .. "dawn_sa_110801_110807.bc",
-  -- kernels .. "dawn_sa_110808_110814.bc",
-  -- kernels .. "dawn_sa_120910_120916.bc"
-}
-
 local LightSources = {
   sun.LightSource,
   {
@@ -84,8 +36,8 @@ local DawnPosition = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "DAWN",
-      Observer = "SSB"
+      Target = kernels.ID.Dawn,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     -- Rotation for model version 2
     Rotation = {
@@ -106,8 +58,8 @@ local Dawn = {
   Transform = {
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "DAWN_SPACECRAFT",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Dawn,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Renderable = {
@@ -128,8 +80,8 @@ local DawnTrail = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "DAWN",
-      Observer = "SSB"
+      Target = kernels.ID.Dawn,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 1.0, 0.8, 0.4 },
     ShowFullTrail = false,
@@ -153,8 +105,8 @@ local DawnFramingCamera1 = {
   Parent = Dawn.Identifier,
   Renderable = {
     Type = "RenderableFov",
-    Body = "DAWN",
-    Frame = "DAWN_SPACECRAFT",
+    Body = kernels.ID.Dawn,
+    Frame = kernels.Frame.Dawn,
     Color = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "DAWN_FC1",
@@ -174,8 +126,8 @@ local DawnFramingCamera2 = {
   Parent = Dawn.Identifier,
   Renderable = {
     Type = "RenderableFov",
-    Body = "DAWN",
-    Frame = "DAWN_SPACECRAFT",
+    Body = kernels.ID.Dawn,
+    Frame = kernels.Frame.Dawn,
     Color = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "DAWN_FC2",
@@ -192,8 +144,6 @@ local DawnFramingCamera2 = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(KernelFiles)
-
   openspace.addSceneGraphNode(DawnPosition)
   openspace.addSceneGraphNode(Dawn)
   openspace.addSceneGraphNode(DawnTrail)
@@ -207,8 +157,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(DawnTrail)
   openspace.removeSceneGraphNode(Dawn)
   openspace.removeSceneGraphNode(DawnPosition)
-
-  openspace.spice.unloadKernel(KernelFiles)
 end)
 
 asset.export(DawnPosition)

data/assets/scene/solarsystem/missions/dawn/kernels.asset

@@ -0,0 +1,89 @@
+local coreKernels = asset.require("spice/core")
+
+
+
+local dawn = asset.resource({
+  Name = "Dawn Kernels",
+  Type = "HttpSynchronization",
+  Identifier = "dawn_kernels",
+  Version = 3
+})
+
+local vesta = asset.resource({
+  Name = "Vesta Kernels",
+  Type = "HttpSynchronization",
+  Identifier = "vesta_kernels",
+  Version = 1
+})
+
+
+local DawnKernels = {
+  dawn .. "dawn_ref_070926-150201_070829.bsp",
+
+  -- IK
+  dawn .. "dawn_fc_v10.ti",
+
+  -- SPK
+  dawn .. "dawn_rec_070927_070930_081218_v1.bsp",
+  -- dawn .. "dawn_rec_110201_110328_110328_v1.bsp",
+  -- dawn .. "dawn_rec_110328_110419_110420_v1.bsp",
+  dawn .. "dawn_rec_110416_110802_110913_v1.bsp",
+  dawn .. "dawn_rec_110802_110831_110922_v1.bsp",
+  -- dawn .. "spk/dawn_rec_110831_110928_111221_v1.bsp",
+  -- dawn .. "dawn_rec_110928_111102_120615_v1.bsp",
+  -- dawn .. "dawn_rec_111102_111210_120618_v1.bsp",
+  -- dawn .. "dawn_rec_111211_120501_120620_v1.bsp",
+  dawn .. "dawn_rec_120724_120913_121213_v1.bsp",
+
+  -- FK
+  dawn .. "dawn_v12.tf",
+
+  dawn .. "dawn_203_sclkscet_00039.tsc",
+
+  dawn .. "dawn_sc_070927_070930.bc",
+  dawn .. "dawn_sc_110801_110807.bc",
+  dawn .. "dawn_sc_110808_110814.bc",
+  dawn .. "dawn_sc_120910_120916.bc",
+
+  -- dawn .. "dawn_sc_070927_070930.bc",
+  -- dawn .. "dawn_sc_110801_110807.bc",
+  -- dawn .. "dawn_sc_110808_110814.bc",
+  -- dawn .. "dawn_sc_120910_120916.bc",
+
+
+  -- Solar array rotation kernels
+  dawn .. "dawn_sa_070927_070930.bc",
+  -- dawn .. "dawn_sa_110801_110807.bc",
+  -- dawn .. "dawn_sa_110808_110814.bc",
+  -- dawn .. "dawn_sa_120910_120916.bc"
+}
+
+local VestaKernels = {
+  vesta .. "sb_vesta_071107.bsp"
+}
+
+local ID = {
+  Dawn = "DAWN",
+  Vesta = "VESTA"
+}
+
+local Frame = {
+  Dawn = "DAWN_SPACECRAFT",
+  DawnSolarArray1 = -203010,
+  DawnSolarArray2 = -203020,
+  Vesta = coreKernels.Frame.Vesta
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(DawnKernels)
+  openspace.spice.loadKernel(VestaKernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(VestaKernels)
+  openspace.spice.unloadKernel(DawnKernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)

data/assets/scene/solarsystem/missions/dawn/vesta.asset

@@ -1,14 +1,9 @@
 local transforms = asset.require("scene/solarsystem/sun/transforms")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
-local kernels = asset.resource({
-  Name = "Vesta Kernels",
-  Type = "HttpSynchronization",
-  Identifier = "vesta_kernels",
-  Version = 1
-})
-
 local textures = asset.resource({
   Name = "Vesta Textures",
   Type = "HttpSynchronization",
@@ -37,13 +32,13 @@ local Vesta = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "VESTA",
-      Observer = "SSB"
+      Target = kernels.ID.Vesta,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "IAU_VESTA",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Vesta,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   BoundingSphere = 262000,
@@ -54,8 +49,8 @@ local Vesta = {
     Projection = {
       Sequence = images,
       SequenceType = "image-sequence",
-      Observer = "DAWN",
-      Target = "VESTA",
+      Observer = kernels.ID.Dawn,
+      Target = kernels.ID.Vesta,
       Aberration = "NONE",
 
       DataInputTranslation = {
@@ -121,8 +116,8 @@ local VestaTrail = {
     Type = "RenderableTrailOrbit",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "VESTA",
-      Observer = "SSB"
+      Target = kernels.ID.Vesta,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.7, 0.8, 0.7 },
     StartTime = "2007 JUL 20 12:00:00",
@@ -138,8 +133,6 @@ local VestaTrail = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels .. "sb_vesta_071107.bsp")
-
   openspace.addSceneGraphNode(Vesta)
   openspace.addSceneGraphNode(VestaTrail)
 end)
@@ -147,8 +140,6 @@ end)
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(VestaTrail)
   openspace.removeSceneGraphNode(Vesta)
-
-  openspace.spice.unloadKernel(kernels .. "sb_vesta_071107.bsp")
 end)
 
 asset.export(Vesta)

data/assets/scene/solarsystem/missions/insight/edl.asset

@@ -1,8 +1,9 @@
-asset.require("spice/base")
 asset.require("./actions")
 asset.require("scene/solarsystem/planets/mars/default_layers")
 local sun = asset.require("scene/solarsystem/sun/sun")
 local mars = asset.require("scene/solarsystem/planets/mars/mars")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -13,21 +14,6 @@ local models = asset.resource({
   Version = 2
 })
 
-local ikernels = asset.resource({
-  Name = "Insight Kernels",
-  Type = "HttpSynchronization",
-  Identifier = "insight_kernels",
-  Version = 1
-})
-
-
-local iKernels = {
-  ikernels .. "nsyt_spk_cruise_od063_v1_approach2surface_SC_Lander.tsc",
-  ikernels .. "insight_v02.tfr",
-  ikernels .. "mar085s.bsp",
-  ikernels .. "nsyt_spk_cruise_POST_approach2surface_SC_Lander.bsp",
-  ikernels .. "nsyt_spk_cruise_POST_approach2surface_SC_Lander.bck"
-}
 
 local RotationMatrix = {
   -1,  0,  0, 0,
@@ -68,41 +54,41 @@ local SpiceRotationEndTime = "2018 NOV 26 19:51:39"
 local TranslationKeyframes = {
   ["1850 JAN 01 00:00:00"] = {
       Type = "SpiceTranslation",
-      Target = "INSIGHT",
-      Observer = "MARS",
-      Frame = "IAU_MARS",
+      Target = kernels.ID.Insight,
+      Observer = coreKernels.ID.Mars,
+      Frame = coreKernels.Frame.Mars,
       FixedDate = "2018 NOV 26 19:39:03"
   },
   ["2018 NOV 26 19:39:02"] = {
       Type = "SpiceTranslation",
-      Target = "INSIGHT",
-      Observer = "MARS",
-      Frame = "IAU_MARS",
+      Target = kernels.ID.Insight,
+      Observer = coreKernels.ID.Mars,
+      Frame = coreKernels.Frame.Mars,
       FixedDate = "2018 NOV 26 19:39:03"
   },
   ["2018 NOV 26 19:39:03"] = {
     Type = "SpiceTranslation",
-    Target = "INSIGHT",
-    Observer = "MARS",
-    Frame = "IAU_MARS"
+    Target = kernels.ID.Insight,
+    Observer = coreKernels.ID.Mars,
+    Frame = coreKernels.Frame.Mars
   },
   ["2018 NOV 26 19:39:04"] = {
     Type = "SpiceTranslation",
-    Target = "INSIGHT",
-    Observer = "MARS",
-    Frame = "IAU_MARS"
+    Target = kernels.ID.Insight,
+    Observer = coreKernels.ID.Mars,
+    Frame = coreKernels.Frame.Mars
   },
  ["2018 NOV 26 19:45:34"] = {
     Type = "SpiceTranslation",
-    Target = "INSIGHT",
-    Observer = "MARS",
-    Frame = "IAU_MARS"
+    Target = kernels.ID.Insight,
+    Observer = coreKernels.ID.Mars,
+    Frame = coreKernels.Frame.Mars
   },
   ["2018 NOV 26 19:45:35"] = {
       Type = "SpiceTranslation",
-      Target = "INSIGHT",
-      Observer = "MARS",
-      Frame = "IAU_MARS",
+      Target = kernels.ID.Insight,
+      Observer = coreKernels.ID.Mars,
+      Frame = coreKernels.Frame.Mars,
       FixedDate = "2018 NOV 26 19:45:34"
   }
 }
@@ -110,35 +96,35 @@ local TranslationKeyframes = {
 local RotationKeyframes = {
   ["1850 JAN 01 00:00:00"] = {
     Type = "SpiceRotation",
-    SourceFrame = "INSIGHT_LANDER_CRUISE",
-    DestinationFrame = "IAU_MARS",
+    SourceFrame = kernels.Frame.InsightCruise,
+    DestinationFrame = coreKernels.Frame.Mars,
     FixedDate = "2018 NOV 26 19:39:02"
   },
   ["2018 NOV 26 19:39:02"] = {
     Type = "SpiceRotation",
-    SourceFrame = "INSIGHT_LANDER_CRUISE",
-    DestinationFrame = "IAU_MARS",
+    SourceFrame = kernels.Frame.InsightCruise,
+    DestinationFrame = coreKernels.Frame.Mars,
     FixedDate = "2018 NOV 26 19:39:02"
   },
   ["2018 NOV 26 19:39:03"] = {
     Type = "SpiceRotation",
-    SourceFrame = "INSIGHT_LANDER_CRUISE",
-    DestinationFrame = "IAU_MARS"
+    SourceFrame = kernels.Frame.InsightCruise,
+    DestinationFrame = coreKernels.Frame.Mars
   },
   ["2018 NOV 26 19:39:04"] = {
     Type = "SpiceRotation",
-    SourceFrame = "INSIGHT_LANDER_CRUISE",
-    DestinationFrame = "IAU_MARS"
+    SourceFrame = kernels.Frame.InsightCruise,
+    DestinationFrame = coreKernels.Frame.Mars
   },
  ["2018 NOV 26 19:45:34"] = {
     Type = "SpiceRotation",
-    SourceFrame = "INSIGHT_LANDER_CRUISE",
-    DestinationFrame = "IAU_MARS"
+    SourceFrame = kernels.Frame.InsightCruise,
+    DestinationFrame = coreKernels.Frame.Mars
   },
   ["2018 NOV 26 19:45:35"] = {
     Type = "SpiceRotation",
-    SourceFrame = "INSIGHT_LANDER_CRUISE",
-    DestinationFrame = "IAU_MARS",
+    SourceFrame = kernels.Frame.InsightCruise,
+    DestinationFrame = coreKernels.Frame.Mars,
     FixedDate = "2018 NOV 26 19:45:34"
   }
 }
@@ -785,8 +771,6 @@ local Insight_Trail = {
 }
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(iKernels)
-
   openspace.addSceneGraphNode(InsightParent)
   openspace.addSceneGraphNode(Insight)
   openspace.addSceneGraphNode(Insight_Entry_CapsuleA)
@@ -858,8 +842,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(Insight_Entry_CapsuleA)
   openspace.removeSceneGraphNode(Insight)
   openspace.removeSceneGraphNode(InsightParent)
-
-  openspace.spice.unloadKernel(iKernels)
 end)
 
 asset.export(InsightParent)

data/assets/scene/solarsystem/missions/insight/kernels.asset

@@ -0,0 +1,36 @@
+local data = asset.resource({
+  Name = "Insight Kernels",
+  Type = "HttpSynchronization",
+  Identifier = "insight_kernels",
+  Version = 1
+})
+
+
+local Kernels = {
+  data .. "nsyt_spk_cruise_od063_v1_approach2surface_SC_Lander.tsc",
+  data .. "insight_v02.tfr",
+  data .. "mar085s.bsp",
+  data .. "nsyt_spk_cruise_POST_approach2surface_SC_Lander.bsp",
+  data .. "nsyt_spk_cruise_POST_approach2surface_SC_Lander.bck"
+}
+
+local ID = {
+  Insight = "INSIGHT"
+}
+
+local Frame = {
+  Insight = -189000,
+  InsightCruise = "INSIGHT_LANDER_CRUISE"
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(Kernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(Kernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)

data/assets/scene/solarsystem/missions/juice/fov/gala.asset

@@ -13,8 +13,8 @@ local Gala = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_GALA_RXT",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.Gala,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_GALA_RXT",

data/assets/scene/solarsystem/missions/juice/fov/janus.asset

@@ -19,8 +19,8 @@ local Janus = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_JANUS",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.Janus,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_JANUS",

data/assets/scene/solarsystem/missions/juice/fov/jmc.asset

@@ -13,8 +13,8 @@ local JMC1 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_JMC-1",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.JMC1,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_JMC-1",
@@ -42,8 +42,8 @@ local JMC2 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_JMC-2",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.JMC2,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_JMC-2",
@@ -62,7 +62,6 @@ local JMC2 = {
 }
 
 
-
 asset.onInitialize(function()
   openspace.addSceneGraphNode(JMC1)
   openspace.addSceneGraphNode(JMC2)

data/assets/scene/solarsystem/missions/juice/fov/majis.asset

@@ -13,8 +13,8 @@ local MajisVisnir = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_MAJIS_VISNIR",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.MajisVisnir,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_MAJIS_VISNIR",
@@ -45,8 +45,8 @@ local MajisVisnirB2 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_MAJIS_VISNIR_B2",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.MajisVisnirB2,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_MAJIS_VISNIR_B2",
@@ -73,8 +73,8 @@ local MajisVisnirB4 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_MAJIS_VISNIR_B4",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.MajisVisnirB4,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_MAJIS_VISNIR_B4",
@@ -101,8 +101,8 @@ local MajisIr = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_MAJIS_IR",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.MajisIR,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_MAJIS_IR",
@@ -129,8 +129,8 @@ local MajisIrB2 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_MAJIS_IR_B2",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.MajisIRB2,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_MAJIS_IR_B2",
@@ -157,8 +157,8 @@ local MajisIrB4 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_MAJIS_IR_B4",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.MajisIRB4,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_MAJIS_IR_B4",
@@ -185,8 +185,8 @@ local Majis = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_MAJIS",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.Majis,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_MAJIS",

data/assets/scene/solarsystem/missions/juice/fov/navcam.asset

@@ -13,8 +13,8 @@ local NavCam = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_NAVCAM-1",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.NavCam,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_NAVCAM-1",

data/assets/scene/solarsystem/missions/juice/fov/rime.asset

@@ -14,8 +14,8 @@ local RimeBase = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_RIME_BASE",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.RimeBase,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_RIME_BASE",
@@ -44,8 +44,8 @@ local Rime = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_RIME",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.Rime,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_RIME",

data/assets/scene/solarsystem/missions/juice/fov/startracker.asset

@@ -13,8 +13,8 @@ local StarOh1 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_STR-OH1",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.StarTrackerOH1,
     RGB = { 0.0, 0.0, 0.0 },
     Instrument = {
       Name = "JUICE_STR-OH1",
@@ -42,8 +42,8 @@ local StarOh2 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_STR-OH2",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.StarTrackerOH2,
     RGB = { 0.0, 0.0, 0.0 },
     Instrument = {
       Name = "JUICE_STR-OH2",
@@ -71,8 +71,8 @@ local StarOh3 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_STR-OH3",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.StarTrackerOH3,
     RGB = { 0.0, 0.0, 0.0 },
     Instrument = {
       Name = "JUICE_STR-OH3",

data/assets/scene/solarsystem/missions/juice/fov/swi.asset

@@ -14,8 +14,8 @@ local SwiCh2 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_SWI_CH2",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.SwiCH2,
     RGB = { 0.0, 0.0, 0.0 },
     Instrument = {
       Name = "JUICE_SWI_CH2",
@@ -49,8 +49,8 @@ local SwiFull = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_SWI_FULL",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.SwiFull,
     RGB = { 0.0, 0.0, 0.0 },
     Instrument = {
       Name = "JUICE_SWI_FULL",
@@ -87,8 +87,8 @@ local SwiFullGCO500 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_SWI_FULL_GCO500",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.SwiFullGCO500,
     RGB = { 0.0, 0.0, 0.0 },
     Instrument = {
       Name = "JUICE_SWI_FULL_GCO500",

data/assets/scene/solarsystem/missions/juice/fov/uvs.asset

@@ -13,8 +13,8 @@ local UVS = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "JUICE",
-    Frame = "JUICE_UVS",
+    Body = kernels.ID.Juice,
+    Frame = kernels.Frame.UVS,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
       Name = "JUICE_UVS",

data/assets/scene/solarsystem/missions/juice/kernels.asset

@@ -1,4 +1,4 @@
-local kernels = asset.resource({
+local data = asset.resource({
   Name = "JUICE Kernels",
   Type = "HttpSynchronization",
   Identifier = "juice_kernels",
@@ -9,52 +9,95 @@ local kernels = asset.resource({
 -- Kernels downloaded aon 2023-04-18
 -- + GPHIO from Ronan
 local Kernels = {
-  kernels .. "juice_sc_attc_000031_230414_230503_v03.bc",
-  kernels .. "juice_lpbooms_s160326_v01.bc",
-  kernels .. "juice_magboom_s160326_v01.bc",
-  kernels .. "juice_majis_scan_zero_v01.bc",
-  kernels .. "juice_mga_meas_230413_230415_s230414_v01.bc",
-  kernels .. "juice_mga_zero_v02.bc",
-  kernels .. "juice_sa_meas_230413_230415_s230414_v01.bc",
-  kernels .. "juice_sa_zero_v01.bc",
-  kernels .. "juice_sc_meas_230413_230415_s230414_v01.bc",
-  kernels .. "juice_swi_scan_zero_v01.bc",
+  data .. "juice_sc_attc_000031_230414_230503_v03.bc",
+  data .. "juice_lpbooms_s160326_v01.bc",
+  data .. "juice_magboom_s160326_v01.bc",
+  data .. "juice_majis_scan_zero_v01.bc",
+  data .. "juice_mga_meas_230413_230415_s230414_v01.bc",
+  data .. "juice_mga_zero_v02.bc",
+  data .. "juice_sa_meas_230413_230415_s230414_v01.bc",
+  data .. "juice_sa_zero_v01.bc",
+  data .. "juice_sc_meas_230413_230415_s230414_v01.bc",
+  data .. "juice_swi_scan_zero_v01.bc",
 
-  kernels .. "juice_v32.tf",
-  kernels .. "juice_roi_v02.tf",
-  kernels .. "gphio.tf",
+  data .. "juice_v32.tf",
+  data .. "juice_roi_v02.tf",
+  data .. "gphio.tf",
 
-  kernels .. "juice_aux_v02.ti",
-  kernels .. "juice_gala_v05.ti",
-  kernels .. "juice_janus_v07.ti",
-  kernels .. "juice_jmag_v02.ti",
-  kernels .. "juice_jmc_v02.ti",
-  kernels .. "juice_majis_v07.ti",
-  kernels .. "juice_navcam_v01.ti",
-  kernels .. "juice_pep_v12.ti",
-  kernels .. "juice_radem_v01.ti",
-  kernels .. "juice_rime_v04.ti",
-  kernels .. "juice_rpwi_v03.ti",
-  kernels .. "juice_str_v01.ti",
-  kernels .. "juice_swi_v07.ti",
-  kernels .. "juice_uvs_v06.ti",
+  data .. "juice_aux_v02.ti",
+  data .. "juice_gala_v05.ti",
+  data .. "juice_janus_v07.ti",
+  data .. "juice_jmag_v02.ti",
+  data .. "juice_jmc_v02.ti",
+  data .. "juice_majis_v07.ti",
+  data .. "juice_navcam_v01.ti",
+  data .. "juice_pep_v12.ti",
+  data .. "juice_radem_v01.ti",
+  data .. "juice_rime_v04.ti",
+  data .. "juice_rpwi_v03.ti",
+  data .. "juice_str_v01.ti",
+  data .. "juice_swi_v07.ti",
+  data .. "juice_uvs_v06.ti",
 
-  kernels .. "juice_jup010.tpc",
-  kernels .. "juice_roi_v01.tpc",
+  data .. "juice_jup010.tpc",
+  data .. "juice_roi_v01.tpc",
 
-  kernels .. "juice_step_230414_v01.tsc",
+  data .. "juice_step_230414_v01.tsc",
 
-  kernels .. "juice_crema_5_1_150lb_23_1_v01.bsp",
-  kernels .. "juice_orbc_000031_230414_310721_v03.bsp",
-  kernels .. "jup343_19900101_20500101.bsp",
-  kernels .. "jup344-s2003_j24_19900101_20500101.bsp",
-  kernels .. "jup346_19900101_20500101.bsp",
-  kernels .. "jup365_19900101_20500101.bsp",
-  kernels .. "juice_struct_v17.bsp",
-  kernels .. "juice_roi_v02.bsp"
+  data .. "juice_crema_5_1_150lb_23_1_v01.bsp",
+  data .. "juice_orbc_000031_230414_310721_v03.bsp",
+  data .. "jup343_19900101_20500101.bsp",
+  data .. "jup344-s2003_j24_19900101_20500101.bsp",
+  data .. "jup346_19900101_20500101.bsp",
+  data .. "jup365_19900101_20500101.bsp",
+  data .. "juice_struct_v17.bsp",
+  data .. "juice_roi_v02.bsp"
 }
 
-asset.export("Kernels", Kernels)
+
+local ID = {
+  Juice = "JUICE"
+}
+
+local Frame = {
+  Juice = "JUICE_SPACECRAFT",
+
+  Gala = "JUICE_GALA_RXT",
+  Janus = "JUICE_JANUS",
+  JMC1 = "JUICE_JMC-1",
+  JMC2 = "JUICE_JMC-2",
+  MajisVisnir = "JUICE_MAJIS_VISNIR",
+  MajisVisnirB2 = "JUICE_MAJIS_VISNIR_B2",
+  MajisVisnirB4 = "JUICE_MAJIS_VISNIR_B4",
+  MajisIR = "JUICE_MAJIS_IR",
+  MajisIRB2 = "JUICE_MAJIS_IR_B2",
+  MajisIRB4 = "JUICE_MAJIS_IR_B4",
+  Majis = "JUICE_MAJIS",
+  NavCam = "JUICE_NAVCAM-1",
+  RimeBase = "JUICE_RIME_BASE",
+  Rime = "JUICE_RIME",
+  StarTrackerOH1 = "JUICE_STR-OH1",
+  StarTrackerOH2 = "JUICE_STR-OH2",
+  StarTrackerOH3 = "JUICE_STR-OH3",
+  SwiCH2 = "JUICE_SWI_CH2",
+  SwiFull = "JUICE_SWI_FULL",
+  SwiFullGCO500 = "JUICE_SWI_FULL_GCO500",
+  UVS = "JUICE_UVS",
+
+  GPHIO = "GPHIO"
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(Kernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(Kernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)
 
 
 

data/assets/scene/solarsystem/missions/juice/trails/earth.asset

@@ -1,5 +1,6 @@
 local transforms = asset.require("scene/solarsystem/planets/earth/transforms")
 local kernels = asset.require("../kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -10,8 +11,8 @@ local JuiceTrailEarth = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "JUICE",
-      Observer = "EARTH BARYCENTER"
+      Target = kernels.ID.Juice,
+      Observer = coreKernels.ID.EarthBarycenter
     },
     Color = { 0.30, 0.70, 0.20 },
     StartTime = "2023 APR 05 12:00:00.000",
@@ -27,15 +28,11 @@ local JuiceTrailEarth = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.Kernels)
-
   openspace.addSceneGraphNode(JuiceTrailEarth)
 end)
 
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(JuiceTrailEarth)
-
-  openspace.spice.unloadKernel(kernels.Kernels)
 end)
 
 asset.export(JuiceTrailEarth)

data/assets/scene/solarsystem/missions/juice/trails/ganymede.asset

@@ -1,4 +1,5 @@
 local transforms = asset.require("../transforms")
+local kernelsJup = asset.require("scene/solarsystem/planets/jupiter/kernels")
 local kernels = asset.require("../kernels")
 
 
@@ -10,8 +11,8 @@ local JuiceTrailGanymede = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "JUICE",
-      Observer = "GANYMEDE"
+      Target = kernels.ID.Juice,
+      Observer = kernelsJup.ID.Ganymede
     },
     Color = { 0.70, 0.770, 0.35 },
     StartTime = "2034 DEC 01 00:00:00.000",
@@ -27,15 +28,11 @@ local JuiceTrailGanymede = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.Kernels)
-
   openspace.addSceneGraphNode(JuiceTrailGanymede)
 end)
 
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(JuiceTrailGanymede)
-
-  openspace.spice.unloadKernel(kernels.Kernels)
 end)
 
 asset.export(JuiceTrailGanymede)

data/assets/scene/solarsystem/missions/juice/trails/jupiter.asset

@@ -1,5 +1,6 @@
 local transforms = asset.require("scene/solarsystem/planets/jupiter/transforms")
 local kernels = asset.require("../kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -10,8 +11,8 @@ local JuiceTrailJupiter = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "JUICE",
-      Observer = "JUPITER BARYCENTER"
+      Target = kernels.ID.Juice,
+      Observer = coreKernels.ID.JupiterBarycenter
     },
     Color = { 0.70, 0.370, 0.45 },
     StartTime = "2031 JUL 02 00:00:00.000",
@@ -27,15 +28,11 @@ local JuiceTrailJupiter = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.Kernels)
-
   openspace.addSceneGraphNode(JuiceTrailJupiter)
 end)
 
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(JuiceTrailJupiter)
-
-  openspace.spice.unloadKernel(kernels.Kernels)
 end)
 
 asset.export(JuiceTrailJupiter)

data/assets/scene/solarsystem/missions/juice/trails/ssb.asset

@@ -1,5 +1,6 @@
 local transforms = asset.require("scene/solarsystem/sun/transforms")
 local kernels = asset.require("../kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -10,8 +11,8 @@ local JuiceTrail = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "JUICE",
-      Observer = "SSB"
+      Target = kernels.ID.Juice,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.85, 0.85, 0.85 },
     StartTime = "2023 APR 05 12:00:00.000",
@@ -27,15 +28,11 @@ local JuiceTrail = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.Kernels)
-
   openspace.addSceneGraphNode(JuiceTrail)
 end)
 
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(JuiceTrail)
-
-  openspace.spice.unloadKernel(kernels.Kernels)
 end)
 
 asset.export(JuiceTrail)

data/assets/scene/solarsystem/missions/juice/transforms.asset

@@ -1,5 +1,7 @@
 local jupiterTransforms = asset.require("scene/solarsystem/planets/jupiter/transforms")
+local kernelsJup = asset.require("scene/solarsystem/planets/jupiter/kernels")
 local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -14,13 +16,13 @@ local Juice = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "JUICE",
-      Observer = "JUPITER BARYCENTER"
+      Target = kernels.ID.Juice,
+      Observer = coreKernels.ID.JupiterBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "JUICE_SPACECRAFT",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Juice,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   GUI = {
@@ -36,8 +38,8 @@ local GanymedePosition = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "GANYMEDE",
-      Observer = "JUPITER BARYCENTER"
+      Target = kernelsJup.ID.Ganymede,
+      Observer = coreKernels.ID.JupiterBarycenter
     }
   },
   GUI = {
@@ -52,8 +54,8 @@ local GPHIO = {
   Transform = {
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "GPHIO",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.GPHIO,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   GUI = {
@@ -69,8 +71,6 @@ local GPHIO = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.Kernels)
-
   openspace.addSceneGraphNode(Juice)
   openspace.addSceneGraphNode(GanymedePosition)
   openspace.addSceneGraphNode(GPHIO)
@@ -80,8 +80,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(GPHIO)
   openspace.removeSceneGraphNode(GanymedePosition)
   openspace.removeSceneGraphNode(Juice)
-
-  openspace.spice.unloadKernel(kernels.Kernels)
 end)
 
 asset.export(Juice)

data/assets/scene/solarsystem/missions/juno/juno.asset

@@ -3,6 +3,7 @@ asset.require("scene/solarsystem/planets/jupiter/layers/colorlayers/jupiter_vide
 local transforms = asset.require("scene/solarsystem/planets/jupiter/transforms")
 local sun = asset.require("scene/solarsystem/sun/sun")
 local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -31,13 +32,13 @@ local Juno = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "JUNO",
-      Observer = "JUPITER BARYCENTER"
+      Target = kernels.ID.Juno,
+      Observer = coreKernels.ID.JupiterBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "JUNO_SPACECRAFT",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Juno,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Renderable = {
@@ -65,8 +66,8 @@ local JunoTrail = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "JUNO",
-      Observer = "JUPITER BARYCENTER"
+      Target = kernels.ID.Juno,
+      Observer = coreKernels.ID.JupiterBarycenter
     },
     Color = { 0.70, 0.50, 0.20 },
     StartTime = "2016 JUL 01",
@@ -81,8 +82,6 @@ local JunoTrail = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.kernels)
-
   openspace.addSceneGraphNode(Juno)
   openspace.addSceneGraphNode(JunoTrail)
 end)
@@ -90,8 +89,6 @@ end)
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(JunoTrail)
   openspace.removeSceneGraphNode(Juno)
-
-  openspace.spice.unloadKernel(kernels.kernels)
 end)
 
 asset.export(Juno)

data/assets/scene/solarsystem/missions/juno/kernels.asset

@@ -1,5 +1,4 @@
-
-local kernels = asset.resource({
+local data = asset.resource({
   Name = "Juno Kernels",
   Type = "HttpSynchronization",
   Identifier = "juno_kernels",
@@ -7,113 +6,132 @@ local kernels = asset.resource({
 })
 
 
-local JunoKernels = {
-  kernels .. "juno_v12.tf",
-  kernels .. "JNO_SCLKSCET.00039.tsc",
-  kernels .. "juno_jade_v00.ti",
-  kernels .. "juno_jedi_v00.ti",
-  kernels .. "juno_jiram_v01.ti",
-  kernels .. "juno_junocam_v00.ti",
-  kernels .. "juno_mag_v00.ti",
-  kernels .. "juno_mwr_v01.ti",
-  kernels .. "juno_struct_v01.ti",
-  kernels .. "juno_uvs_v00.ti",
-  kernels .. "juno_waves_v00.ti",
-  kernels .. "juno_mwr_v01.ti",
-  kernels .. "spk_merge_110805_171017_130515.bsp",
-  kernels .. "spk_ref_210111_251021_210111.bsp",
-  kernels .. "juno_sc_nom_110807_171016_v01.bc",
-  kernels .. "juno_sc_prl_110930_111028_jc003c01_v01.bc",
-  kernels .. "juno_sc_prl_111028_111125_jc004b00_v01.bc",
-  kernels .. "juno_sc_prl_111125_111223_jc005b00_v01.bc",
-  kernels .. "juno_sc_prl_111223_120127_jc006a02_v01.bc",
-  kernels .. "juno_sc_prl_120127_120217_jc007a00_v01.bc",
-  kernels .. "juno_sc_prl_120217_120316_jc008b00_v02.bc",
-  kernels .. "juno_sc_prl_120316_120413_jc009a00_v01.bc",
-  kernels .. "juno_sc_prl_120413_120511_jc010a04_v01.bc",
-  kernels .. "juno_sc_prl_120511_120608_jc011a01_v02.bc",
-  kernels .. "juno_sc_prl_120608_120706_jc012b01_v01.bc",
-  kernels .. "juno_sc_prl_120706_120802_jc013a01_v01.bc",
-  kernels .. "juno_sc_prl_120802_120824_jc014b01_v01.bc",
-  kernels .. "juno_sc_prl_120824_120928_jc015m00_v01.bc",
-  kernels .. "juno_sc_prl_120919_120928_jc015o00_v01.bc",
-  kernels .. "juno_sc_prl_120928_121026_jc016c03_v01.bc",
-  kernels .. "juno_sc_prl_121026_121123_jc017a01_v01.bc",
-  kernels .. "juno_sc_prl_121123_121221_jc018b01_v01.bc",
-  kernels .. "juno_sc_prl_121221_130118_jc019a01_v01.bc",
-  kernels .. "juno_sc_prl_130118_130215_jc020b01_v01.bc",
-  kernels .. "juno_sc_prl_130315_130412_jc022b01_v01.bc",
-  kernels .. "juno_sc_prl_130412_130510_jc023b03_v01.bc",
-  kernels .. "juno_sc_prl_130510_130607_jc024a01_v01.bc",
-  kernels .. "juno_sc_prl_130607_130705_jc025a00_v01.bc",
-  kernels .. "juno_sc_prl_130705_130802_jc026a01_v01.bc",
-  kernels .. "juno_sc_prl_130726_131020_jx024a02_EFB_v03.bc",
-  kernels .. "juno_sc_prl_130802_130830_jc027a02_v01.bc",
-  kernels .. "juno_sc_prl_130830_130927_jc028a01_v01.bc",
-  kernels .. "juno_sc_prl_130926_131025_jc029a00_v01.bc",
-  kernels .. "juno_sc_prl_130927_131025_jc029c01_v01.bc",
-  kernels .. "juno_sc_prl_131022_131025_jc029f00_v01.bc",
-  kernels .. "juno_sc_prl_131025_131122_jc030b04_v01.bc",
-  kernels .. "juno_sc_prl_131122_131220_jc031b01_v01.bc",
-  kernels .. "juno_sc_prl_131220_140124_jc032a01_v01.bc",
-  kernels .. "juno_sc_prl_140124_140214_jc033a01_v01.bc",
-  kernels .. "juno_sc_prl_140214_140314_jc034b01_v01.bc",
-  kernels .. "juno_sc_prl_140314_140411_jc035a01_v01.bc",
-  kernels .. "juno_sc_prl_140411_140509_jc036b01_v01.bc",
-  kernels .. "juno_sc_prl_140509_140606_jc037b02_v01.bc",
-  kernels .. "juno_sc_prl_140606_140704_jc038a01_v01.bc",
-  kernels .. "juno_sc_prl_140704_140801_jc039b01_v01.bc",
-  kernels .. "juno_sc_prl_140801_140829_jc040a01_v01.bc",
-  kernels .. "juno_sc_prl_140829_140926_jc041a01_v01.bc",
-  kernels .. "juno_sc_prl_140926_141024_jc042a01_v01.bc",
-  kernels .. "juno_sc_prl_141024_141121_jc043a01_v01.bc",
-  kernels .. "juno_sc_prl_141105_141121_jc043m01_v01.bc",
-  kernels .. "juno_sc_prl_141107_141121_jc043s01_v01.bc",
-  kernels .. "juno_sc_prl_141121_141219_jc044a01_v01.bc",
-  kernels .. "juno_sc_prl_141219_150123_jc045a01_v01.bc",
-  kernels .. "juno_sc_prl_150123_150213_jc046a01_v01.bc",
-  kernels .. "juno_sc_prl_150213_150313_jc047a01_v01.bc",
-  kernels .. "juno_sc_prl_150312_150409_jc048a01_v01.bc",
-  kernels .. "juno_sc_prl_150410_150508_jc049a01_v01.bc",
-  kernels .. "juno_sc_prl_150508_150605_jc050a01_v01.bc",
-  kernels .. "juno_sc_prl_150605_150703_jc051a01_v01.bc",
-  kernels .. "juno_sc_prl_150703_150731_jc052a01_v01.bc",
-  kernels .. "juno_sc_prl_150731_150828_jc053a01_v01.bc",
-  kernels .. "juno_sc_prl_150805_150828_jc053m00_v01.bc",
-  kernels .. "juno_sc_prl_150807_150828_jc053s00_v01.bc",
-  kernels .. "juno_sc_prl_150828_150924_jc054a00_v01.bc",
-  kernels .. "juno_sc_prl_150924_151023_jc055a00_v01.bc",
-  kernels .. "juno_sc_prl_151023_151120_jc056a00_v01.bc",
-  kernels .. "juno_sc_prl_151120_151218_jc057a00_v01.bc",
-  kernels .. "juno_sc_prl_151218_160115_jc058a00_v01.bc",
-  kernels .. "juno_sc_prl_160115_160212_jc059a00_v01.bc",
-  kernels .. "juno_sc_prl_160212_160311_jc060a00_v01.bc",
-  kernels .. "juno_sc_prl_160311_160408_jc061a00_v01.bc",
-  kernels .. "juno_sc_prl_160408_160506_jc062a00_v01.bc",
-  kernels .. "juno_sc_prl_160506_160603_jc063a00_v01.bc",
-  kernels .. "juno_sc_prl_160603_160630_jc064a00_v01.bc",
-  kernels .. "juno_sc_prl_160708_160729_jm0001rp_v02.bc",
-  kernels .. "juno_sc_prl_160729_160826_jm0002rp_v01.bc",
-  kernels .. "juno_sc_prl_160827_160920_jm0003a00_v01.bc",
-  kernels .. "juno_sc_prl_160924_161019_jm0004a00_v01.bc",
-  kernels .. "juno_sc_prl_161014_161115_jm0005a00_v01.bc",
-  kernels .. "juno_sc_prl_161022_161115_jm0005b00_v01.bc",
-  kernels .. "juno_sc_prl_161115_161213_jx0405rp_v01.bc",
-  kernels .. "juno_sc_prl_161210_170115_jm0031a00_v01.bc",
-  kernels .. "juno_sc_prl_170115_170201_jm0032a00_v01.bc",
-  kernels .. "juno_sc_prl_170201_170309_jm0041a00_v01.bc",
-  kernels .. "juno_sc_prl_170309_170326_jm0042rp_v01.bc",
-  kernels .. "juno_sc_prl_170326_170427_jm0051rp_v01.bc",
-  kernels .. "juno_sc_prl_170427_170518_jm0052rp_v01.bc",
-  kernels .. "juno_sc_prl_170518_170615_jm0061a00_v01.bc",
-  kernels .. "juno_sc_prl_170615_170710_jm0062a00_v01.bc",
-  kernels .. "juno_sc_prl_170710_170805_jm0071a00_v01.bc",
-  kernels .. "juno_sc_prl_170805_170831_jm0072a00_v01.bc",
-  kernels .. "juno_sc_prl_170831_170927_jm0081a00_v01.bc",
-  kernels .. "juno_sc_prl_170927_171023_jm0082a00_v01.bc",
-  kernels .. "juno_sc_prl_171023_171030_jm0091a00_v01.bc",
-  kernels .. "juno_sc_prl_171023_171030_jm0091a00_v01.bc",
-  kernels .. "juno_sc_prl_230228_230407_jm0490rp_v01.bc"
+local Kernels = {
+  data .. "juno_v12.tf",
+  data .. "JNO_SCLKSCET.00039.tsc",
+  data .. "juno_jade_v00.ti",
+  data .. "juno_jedi_v00.ti",
+  data .. "juno_jiram_v01.ti",
+  data .. "juno_junocam_v00.ti",
+  data .. "juno_mag_v00.ti",
+  data .. "juno_mwr_v01.ti",
+  data .. "juno_struct_v01.ti",
+  data .. "juno_uvs_v00.ti",
+  data .. "juno_waves_v00.ti",
+  data .. "juno_mwr_v01.ti",
+  data .. "spk_merge_110805_171017_130515.bsp",
+  data .. "spk_ref_210111_251021_210111.bsp",
+  data .. "juno_sc_nom_110807_171016_v01.bc",
+  data .. "juno_sc_prl_110930_111028_jc003c01_v01.bc",
+  data .. "juno_sc_prl_111028_111125_jc004b00_v01.bc",
+  data .. "juno_sc_prl_111125_111223_jc005b00_v01.bc",
+  data .. "juno_sc_prl_111223_120127_jc006a02_v01.bc",
+  data .. "juno_sc_prl_120127_120217_jc007a00_v01.bc",
+  data .. "juno_sc_prl_120217_120316_jc008b00_v02.bc",
+  data .. "juno_sc_prl_120316_120413_jc009a00_v01.bc",
+  data .. "juno_sc_prl_120413_120511_jc010a04_v01.bc",
+  data .. "juno_sc_prl_120511_120608_jc011a01_v02.bc",
+  data .. "juno_sc_prl_120608_120706_jc012b01_v01.bc",
+  data .. "juno_sc_prl_120706_120802_jc013a01_v01.bc",
+  data .. "juno_sc_prl_120802_120824_jc014b01_v01.bc",
+  data .. "juno_sc_prl_120824_120928_jc015m00_v01.bc",
+  data .. "juno_sc_prl_120919_120928_jc015o00_v01.bc",
+  data .. "juno_sc_prl_120928_121026_jc016c03_v01.bc",
+  data .. "juno_sc_prl_121026_121123_jc017a01_v01.bc",
+  data .. "juno_sc_prl_121123_121221_jc018b01_v01.bc",
+  data .. "juno_sc_prl_121221_130118_jc019a01_v01.bc",
+  data .. "juno_sc_prl_130118_130215_jc020b01_v01.bc",
+  data .. "juno_sc_prl_130315_130412_jc022b01_v01.bc",
+  data .. "juno_sc_prl_130412_130510_jc023b03_v01.bc",
+  data .. "juno_sc_prl_130510_130607_jc024a01_v01.bc",
+  data .. "juno_sc_prl_130607_130705_jc025a00_v01.bc",
+  data .. "juno_sc_prl_130705_130802_jc026a01_v01.bc",
+  data .. "juno_sc_prl_130726_131020_jx024a02_EFB_v03.bc",
+  data .. "juno_sc_prl_130802_130830_jc027a02_v01.bc",
+  data .. "juno_sc_prl_130830_130927_jc028a01_v01.bc",
+  data .. "juno_sc_prl_130926_131025_jc029a00_v01.bc",
+  data .. "juno_sc_prl_130927_131025_jc029c01_v01.bc",
+  data .. "juno_sc_prl_131022_131025_jc029f00_v01.bc",
+  data .. "juno_sc_prl_131025_131122_jc030b04_v01.bc",
+  data .. "juno_sc_prl_131122_131220_jc031b01_v01.bc",
+  data .. "juno_sc_prl_131220_140124_jc032a01_v01.bc",
+  data .. "juno_sc_prl_140124_140214_jc033a01_v01.bc",
+  data .. "juno_sc_prl_140214_140314_jc034b01_v01.bc",
+  data .. "juno_sc_prl_140314_140411_jc035a01_v01.bc",
+  data .. "juno_sc_prl_140411_140509_jc036b01_v01.bc",
+  data .. "juno_sc_prl_140509_140606_jc037b02_v01.bc",
+  data .. "juno_sc_prl_140606_140704_jc038a01_v01.bc",
+  data .. "juno_sc_prl_140704_140801_jc039b01_v01.bc",
+  data .. "juno_sc_prl_140801_140829_jc040a01_v01.bc",
+  data .. "juno_sc_prl_140829_140926_jc041a01_v01.bc",
+  data .. "juno_sc_prl_140926_141024_jc042a01_v01.bc",
+  data .. "juno_sc_prl_141024_141121_jc043a01_v01.bc",
+  data .. "juno_sc_prl_141105_141121_jc043m01_v01.bc",
+  data .. "juno_sc_prl_141107_141121_jc043s01_v01.bc",
+  data .. "juno_sc_prl_141121_141219_jc044a01_v01.bc",
+  data .. "juno_sc_prl_141219_150123_jc045a01_v01.bc",
+  data .. "juno_sc_prl_150123_150213_jc046a01_v01.bc",
+  data .. "juno_sc_prl_150213_150313_jc047a01_v01.bc",
+  data .. "juno_sc_prl_150312_150409_jc048a01_v01.bc",
+  data .. "juno_sc_prl_150410_150508_jc049a01_v01.bc",
+  data .. "juno_sc_prl_150508_150605_jc050a01_v01.bc",
+  data .. "juno_sc_prl_150605_150703_jc051a01_v01.bc",
+  data .. "juno_sc_prl_150703_150731_jc052a01_v01.bc",
+  data .. "juno_sc_prl_150731_150828_jc053a01_v01.bc",
+  data .. "juno_sc_prl_150805_150828_jc053m00_v01.bc",
+  data .. "juno_sc_prl_150807_150828_jc053s00_v01.bc",
+  data .. "juno_sc_prl_150828_150924_jc054a00_v01.bc",
+  data .. "juno_sc_prl_150924_151023_jc055a00_v01.bc",
+  data .. "juno_sc_prl_151023_151120_jc056a00_v01.bc",
+  data .. "juno_sc_prl_151120_151218_jc057a00_v01.bc",
+  data .. "juno_sc_prl_151218_160115_jc058a00_v01.bc",
+  data .. "juno_sc_prl_160115_160212_jc059a00_v01.bc",
+  data .. "juno_sc_prl_160212_160311_jc060a00_v01.bc",
+  data .. "juno_sc_prl_160311_160408_jc061a00_v01.bc",
+  data .. "juno_sc_prl_160408_160506_jc062a00_v01.bc",
+  data .. "juno_sc_prl_160506_160603_jc063a00_v01.bc",
+  data .. "juno_sc_prl_160603_160630_jc064a00_v01.bc",
+  data .. "juno_sc_prl_160708_160729_jm0001rp_v02.bc",
+  data .. "juno_sc_prl_160729_160826_jm0002rp_v01.bc",
+  data .. "juno_sc_prl_160827_160920_jm0003a00_v01.bc",
+  data .. "juno_sc_prl_160924_161019_jm0004a00_v01.bc",
+  data .. "juno_sc_prl_161014_161115_jm0005a00_v01.bc",
+  data .. "juno_sc_prl_161022_161115_jm0005b00_v01.bc",
+  data .. "juno_sc_prl_161115_161213_jx0405rp_v01.bc",
+  data .. "juno_sc_prl_161210_170115_jm0031a00_v01.bc",
+  data .. "juno_sc_prl_170115_170201_jm0032a00_v01.bc",
+  data .. "juno_sc_prl_170201_170309_jm0041a00_v01.bc",
+  data .. "juno_sc_prl_170309_170326_jm0042rp_v01.bc",
+  data .. "juno_sc_prl_170326_170427_jm0051rp_v01.bc",
+  data .. "juno_sc_prl_170427_170518_jm0052rp_v01.bc",
+  data .. "juno_sc_prl_170518_170615_jm0061a00_v01.bc",
+  data .. "juno_sc_prl_170615_170710_jm0062a00_v01.bc",
+  data .. "juno_sc_prl_170710_170805_jm0071a00_v01.bc",
+  data .. "juno_sc_prl_170805_170831_jm0072a00_v01.bc",
+  data .. "juno_sc_prl_170831_170927_jm0081a00_v01.bc",
+  data .. "juno_sc_prl_170927_171023_jm0082a00_v01.bc",
+  data .. "juno_sc_prl_171023_171030_jm0091a00_v01.bc",
+  data .. "juno_sc_prl_171023_171030_jm0091a00_v01.bc",
+  data .. "juno_sc_prl_230228_230407_jm0490rp_v01.bc"
 }
 
-asset.export("kernels", JunoKernels)
+
+local ID = {
+  Juno = "JUNO"
+}
+
+local Frame = {
+  Juno = "JUNO_SPACECRAFT"
+}
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(Kernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(Kernels)
+end)
+
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)

data/assets/scene/solarsystem/missions/messenger/kernels.asset

@@ -1,4 +1,4 @@
-local kernels = asset.resource({
+local data = asset.resource({
   Name = "Messenger Kernels",
   Type = "HttpSynchronization",
   Identifier = "messenger_spice",
@@ -7,35 +7,52 @@ local kernels = asset.resource({
 
 
 local Kernels = {
-  kernels .. "messenger_2548.tsc",
-  kernels .. "msgr_v231.tf",
+  data .. "messenger_2548.tsc",
+  data .. "msgr_v231.tf",
 
-  kernels .. "de405.bsp",
-  kernels .. "msgr_040803_150430_150430_od431sc_2.bsp",
-  kernels .. "msgr_antenna_v000.bsp",
-  kernels .. "msgr_de405_de423s.bsp",
+  data .. "de405.bsp",
+  data .. "msgr_040803_150430_150430_od431sc_2.bsp",
+  data .. "msgr_antenna_v000.bsp",
+  data .. "msgr_de405_de423s.bsp",
 
-  kernels .. "msgr_epps_v100.ti",
-  kernels .. "msgr_grns_v110.ti",
-  kernels .. "msgr_mag_v021.ti",
-  kernels .. "msgr_mascs_v100.ti",
-  kernels .. "msgr_mdis_v160.ti",
-  kernels .. "msgr_mla_v010.ti",
-  kernels .. "msgr_rs_v111.ti",
-  kernels .. "msgr_xrs_v001.ti",
+  data .. "msgr_epps_v100.ti",
+  data .. "msgr_grns_v110.ti",
+  data .. "msgr_mag_v021.ti",
+  data .. "msgr_mascs_v100.ti",
+  data .. "msgr_mdis_v160.ti",
+  data .. "msgr_mla_v010.ti",
+  data .. "msgr_rs_v111.ti",
+  data .. "msgr_xrs_v001.ti",
 
+  data .. "pck00008.tpc",
+  data .. "pck00008_msgr.tpc",
+  data .. "pck00009_msgr_v10.tpc",
+  data .. "pck00010_msgr_v10.tpc",
+  data .. "pck00010_msgr_v23.tpc",
+  data .. "pck00010.tpc",
 
-  kernels .. "pck00008.tpc",
-  kernels .. "pck00008_msgr.tpc",
-  kernels .. "pck00009_msgr_v10.tpc",
-  kernels .. "pck00010_msgr_v10.tpc",
-  kernels .. "pck00010_msgr_v23.tpc",
-  kernels .. "pck00010.tpc",
-
-  kernels .. "msgr_1103_v02.bc",
-  kernels .. "msgr_1104_v02.bc",
-  kernels .. "msgr_1105_v02.bc",
-  kernels .. "msgr_1106_v02.bc"
+  data .. "msgr_1103_v02.bc",
+  data .. "msgr_1104_v02.bc",
+  data .. "msgr_1105_v02.bc",
+  data .. "msgr_1106_v02.bc"
 }
 
-asset.export("Kernels", Kernels)
+local ID = {
+  Messenger = "MESSENGER"
+}
+
+local Frame = {
+  Messenger = "MSGR_SPACECRAFT"
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(Kernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(Kernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)

data/assets/scene/solarsystem/missions/messenger/mercurymagnetosphere.asset

@@ -1,4 +1,7 @@
 local mercuryTransforms = asset.require("scene/solarsystem/planets/mercury/transforms")
+local coreKernels = asset.require("spice/core")
+
+
 
 local localFolder = asset.resource({
   Name = "Mercury Magnetosphere",
@@ -17,13 +20,13 @@ local Magnetosphere = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "MERCURY",
-      Observer = "MERCURY BARYCENTER"
+      Target = coreKernels.ID.Mercury,
+      Observer = coreKernels.ID.MercuryBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
       SourceFrame = "MERCURYSE",
-      DestinationFrame = "GALACTIC"
+      DestinationFrame = coreKernels.Frame.Galactic
     },
     Scale = {
       Type = "StaticScale",

data/assets/scene/solarsystem/missions/messenger/messenger.asset

@@ -2,6 +2,7 @@ local sun = asset.require("scene/solarsystem/sun/sun")
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
 local mercuryTransforms = asset.require("scene/solarsystem/planets/mercury/transforms")
 local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 local models = asset.resource({
@@ -30,13 +31,13 @@ local Messenger = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "MESSENGER",
-      Observer = "SSB"
+      Target = kernels.ID.Messenger,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "MSGR_SPACECRAFT",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Messenger,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   GUI = {
@@ -153,8 +154,6 @@ local MessengerTrail = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.Kernels)
-
   openspace.addSceneGraphNode(Messenger)
   openspace.addSceneGraphNode(MessengerProbeBlack)
   openspace.addSceneGraphNode(MessengerProbeFoil)
@@ -172,8 +171,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(MessengerProbeFoil)
   openspace.removeSceneGraphNode(MessengerProbeBlack)
   openspace.removeSceneGraphNode(Messenger)
-
-  openspace.spice.unloadKernel(kernels.Kernels)
 end)
 
 asset.export(Messenger)

data/assets/scene/solarsystem/missions/newhorizons/charon.asset

@@ -1,5 +1,7 @@
 local transforms = asset.require("./transforms")
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -19,13 +21,13 @@ local CharonProjection = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "CHARON",
-      Observer = "PLUTO BARYCENTER"
+      Target = kernels.ID.Charon,
+      Observer = kernels.ID.PlutoBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "IAU_CHARON",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Charon,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Renderable = {
@@ -42,12 +44,12 @@ local CharonProjection = {
     },
     MeridianShift = true,
     Projection = {
-      Observer = "NEW HORIZONS",
-      Target = "CHARON",
+      Observer = kernels.ID.NewHorizons,
+      Target = kernels.ID.Charon,
       Aberration = "NONE",
       AspectRatio = 2,
       Instrument = {
-        Name = "NH_LORRI",
+        Name = kernels.Frame.Lorri,
         Method = "ELLIPSOID",
         Aberration = "NONE",
         Fovy = 0.2907,
@@ -56,8 +58,8 @@ local CharonProjection = {
         Far = 10000
       },
       PotentialTargets = {
-        "PLUTO",
-        "CHARON"
+        kernels.ID.Pluto,
+        kernels.ID.Charon
       }
     }
   },
@@ -97,10 +99,10 @@ local CharonShadow = {
     Type = "RenderableShadowCylinder",
     Opacity = 0.25,
     TerminatorType = "PENUMBRAL",
-    LightSource = "SUN",
-    Observer = "NEW HORIZONS",
-    Body = "CHARON",
-    BodyFrame = "IAU_CHARON",
+    LightSource = coreKernels.ID.Sun,
+    Observer = kernels.ID.NewHorizons,
+    Body = kernels.ID.Charon,
+    BodyFrame = kernels.Frame.Charon,
     Aberration = "NONE"
   },
   GUI = {

data/assets/scene/solarsystem/missions/newhorizons/fov.asset

@@ -1,4 +1,6 @@
 local transforms = asset.require("./transforms")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -18,17 +20,16 @@ local Lorri = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "NEW HORIZONS",
-    Frame = "NH_SPACECRAFT",
+    Body = kernels.ID.NewHorizons,
+    Frame = kernels.Frame.NewHorizons,
     Color = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "NH_LORRI",
+      Name = kernels.Frame.Lorri,
       Aberration = "NONE"
     },
     PotentialTargets = {
-      "Pluto",
-      "Charon",
-      -- "Jupiter", "Io", "Europa", "Ganymede", "Callisto"
+      kernels.ID.Pluto,
+      kernels.ID.Charon
     }
   },
   GUI = {
@@ -48,17 +49,16 @@ local RalphLeisa = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "NEW HORIZONS",
-    Frame = "NH_SPACECRAFT",
+    Body = kernels.ID.NewHorizons,
+    Frame = kernels.Frame.NewHorizons,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "NH_RALPH_LEISA",
+      Name = kernels.Frame.RalphLeisa,
       Aberration = "NONE"
     },
     PotentialTargets = {
-      "Pluto",
-      "Charon",
-      -- "Jupiter", "Io", "Europa", "Ganymede", "Callisto"
+      kernels.ID.Pluto,
+      kernels.ID.Charon
     }
   },
   GUI = {
@@ -78,17 +78,16 @@ local RalphMvicPan1 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "NEW HORIZONS",
-    Frame = "NH_SPACECRAFT",
+    Body = kernels.ID.NewHorizons,
+    Frame = kernels.Frame.NewHorizons,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "NH_RALPH_MVIC_PAN1",
+      Name = kernels.Frame.RalphMvicPan1,
       Aberration = "NONE"
     },
     PotentialTargets = {
-      "Pluto",
-      "Charon",
-      -- "Jupiter", "Io", "Europa", "Ganymede", "Callisto"
+      kernels.ID.Pluto,
+      kernels.ID.Charon
     }
   },
   GUI = {
@@ -108,17 +107,16 @@ local RalphMvicPan2 = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "NEW HORIZONS",
-    Frame = "NH_SPACECRAFT",
+    Body = kernels.ID.NewHorizons,
+    Frame = kernels.Frame.NewHorizons,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "NH_RALPH_MVIC_PAN2",
+      Name = kernels.Frame.RalphMvicPan2,
       Aberration = "NONE"
     },
     PotentialTargets = {
-      "Pluto",
-      "Charon",
-      -- "Jupiter", "Io", "Europa", "Ganymede", "Callisto"
+      kernels.ID.Pluto,
+      kernels.ID.Charon
     }
   },
   GUI = {
@@ -138,17 +136,16 @@ local RalphMvicRed = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "NEW HORIZONS",
-    Frame = "NH_SPACECRAFT",
+    Body = kernels.ID.NewHorizons,
+    Frame = kernels.Frame.NewHorizons,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "NH_RALPH_MVIC_RED",
+      Name = kernels.Frame.RalphMvicRed,
       Aberration = "NONE"
     },
     PotentialTargets = {
-      "Pluto",
-      "Charon",
-      -- "Jupiter", "Io", "Europa", "Ganymede", "Callisto"
+      kernels.ID.Pluto,
+      kernels.ID.Charon
     }
   },
   GUI = {
@@ -168,17 +165,16 @@ local RalphMvicBlue = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "NEW HORIZONS",
-    Frame = "NH_SPACECRAFT",
+    Body = kernels.ID.NewHorizons,
+    Frame = kernels.Frame.NewHorizons,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "NH_RALPH_MVIC_BLUE",
+      Name = kernels.Frame.RalphMvicBlue,
       Aberration = "NONE"
     },
     PotentialTargets = {
-      "Pluto",
-      "Charon",
-      -- "Jupiter", "Io", "Europa", "Ganymede", "Callisto"
+      kernels.ID.Pluto,
+      kernels.ID.Charon
     }
   },
   GUI = {
@@ -198,17 +194,16 @@ local RalphMvicFt = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "NEW HORIZONS",
-    Frame = "NH_SPACECRAFT",
+    Body = kernels.ID.NewHorizons,
+    Frame = kernels.Frame.NewHorizons,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "NH_RALPH_MVIC_FT",
+      Name = kernels.Frame.RalphMvicFT,
       Aberration = "NONE"
     },
     PotentialTargets = {
-      "Pluto",
-      "Charon",
-      -- "Jupiter", "Io", "Europa", "Ganymede", "Callisto"
+      kernels.ID.Pluto,
+      kernels.ID.Charon
     }
   },
   GUI = {
@@ -228,17 +223,16 @@ local RalphMvicMethane = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "NEW HORIZONS",
-    Frame = "NH_SPACECRAFT",
+    Body = kernels.ID.NewHorizons,
+    Frame = kernels.Frame.NewHorizons,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "NH_RALPH_MVIC_METHANE",
+      Name = kernels.Frame.RalphMvicMethane,
       Aberration = "NONE"
     },
     PotentialTargets = {
-      "Pluto",
-      "Charon",
-      -- "Jupiter", "Io", "Europa", "Ganymede", "Callisto"
+      kernels.ID.Pluto,
+      kernels.ID.Charon
     }
   },
   GUI = {
@@ -258,17 +252,16 @@ local RalphMvicNir = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "NEW HORIZONS",
-    Frame = "NH_SPACECRAFT",
+    Body = kernels.ID.NewHorizons,
+    Frame = kernels.Frame.NewHorizons,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "NH_RALPH_MVIC_NIR",
+      Name = kernels.Frame.RalphMvicNIR,
       Aberration = "NONE"
     },
     PotentialTargets = {
-      "Pluto",
-      "Charon",
-      -- "Jupiter", "Io", "Europa", "Ganymede", "Callisto"
+      kernels.ID.Pluto,
+      kernels.ID.Charon
     }
   },
   GUI = {
@@ -288,17 +281,16 @@ local AliceAirglow = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "NEW HORIZONS",
-    Frame = "NH_SPACECRAFT",
+    Body = kernels.ID.NewHorizons,
+    Frame = kernels.Frame.NewHorizons,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "NH_ALICE_AIRGLOW",
+      Name = kernels.Frame.AliceAirglow,
       Aberration = "NONE"
     },
     PotentialTargets = {
-      "Pluto",
-      "Charon",
-      -- "Jupiter", "Io", "Europa", "Ganymede", "Callisto"
+      kernels.ID.Pluto,
+      kernels.ID.Charon
     },
     SimplifyBounds = true
   },
@@ -319,17 +311,16 @@ local AliceSoc = {
   },
   Renderable = {
     Type = "RenderableFov",
-    Body = "NEW HORIZONS",
-    Frame = "NH_SPACECRAFT",
+    Body = kernels.ID.NewHorizons,
+    Frame = kernels.Frame.NewHorizons,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "NH_ALICE_SOC",
+      Name = kernels.Frame.AliceSOC,
       Aberration = "NONE"
     },
     PotentialTargets = {
-      "Pluto",
-      "Charon",
-      -- "Jupiter", "Io", "Europa", "Ganymede", "Callisto"
+      kernels.ID.Pluto,
+      kernels.ID.Charon
     }
   },
   GUI = {
@@ -353,9 +344,9 @@ local Rex = {
   },
   Renderable = {
     Type = "RenderableCrawlingLine",
-    Source = "NH_REX",
-    Target = "EARTH",
-    Instrument = "NH_REX",
+    Source = kernels.ID.Rex,
+    Target = coreKernels.ID.Earth,
+    Instrument = kernels.Frame.Rex,
     Color = {
       Start = { 1.0, 0.7, 0.0, 1.0 },
       End = { 0.0, 0.0, 0.0, 0.0 }

data/assets/scene/solarsystem/missions/newhorizons/kernels.asset

@@ -1,4 +1,8 @@
-local Kernels = asset.resource({
+local coreKernels = asset.require("spice/core")
+
+
+
+local data = asset.resource({
   Name = "New Horizons Kernels",
   Type = "HttpSynchronization",
   Identifier = "newhorizons_kernels",
@@ -7,41 +11,88 @@ local Kernels = asset.resource({
 
 
 local NewHorizonsKernels = {
-  Kernels .. "nh_pred_20141201_20190301_od122.bsp",
-  Kernels .. "NavSE_plu047_od122.bsp",
-  Kernels .. "NavPE_de433_od122.bsp",
+  data .. "nh_pred_20141201_20190301_od122.bsp",
+  data .. "NavSE_plu047_od122.bsp",
+  data .. "NavPE_de433_od122.bsp",
 
-  Kernels .. "new-horizons_1121.tsc",
+  data .. "new-horizons_1121.tsc",
 
-  Kernels .. "nh_scispi_2015_pred.bc",
-  Kernels .. "nh_scispi_2015_recon.bc",
-  Kernels .. "nh_lorri_wcs.bc",
+  data .. "nh_scispi_2015_pred.bc",
+  data .. "nh_scispi_2015_recon.bc",
+  data .. "nh_lorri_wcs.bc",
 
-  Kernels .. "PLU_LORRI_ALL_161216.bc",
+  data .. "PLU_LORRI_ALL_161216.bc",
 
-  Kernels .. "nh_targets_v001.tpc",
-  Kernels .. "nh_pcnh_005.tpc",
+  data .. "nh_targets_v001.tpc",
+  data .. "nh_pcnh_005.tpc",
 
-  Kernels .. "nh_v220.tf",
-  Kernels .. "nh_allinstruments_v002.ti",
-  Kernels .. "nh_alice_v200.ti",
-  Kernels .. "nh_lorri_v201.ti",
-  Kernels .. "nh_pepssi_v110.ti",
-  Kernels .. "nh_ralph_v100.ti",
-  Kernels .. "nh_rex_v100.ti",
-  Kernels .. "nh_sdc_v101.ti",
-  Kernels .. "nh_swap_v100.ti",
-  Kernels .. "nh_astr_v000.ti",
-  Kernels .. "nh_fss_v000.ti",
-  Kernels .. "nh_soc_misc_v001.tf",
-  Kernels .. "nh_stars.bsp"
+  data .. "nh_v220.tf",
+  data .. "nh_allinstruments_v002.ti",
+  data .. "nh_alice_v200.ti",
+  data .. "nh_lorri_v201.ti",
+  data .. "nh_pepssi_v110.ti",
+  data .. "nh_ralph_v100.ti",
+  data .. "nh_rex_v100.ti",
+  data .. "nh_sdc_v101.ti",
+  data .. "nh_swap_v100.ti",
+  data .. "nh_astr_v000.ti",
+  data .. "nh_fss_v000.ti",
+  data .. "nh_soc_misc_v001.tf",
+  data .. "nh_stars.bsp"
 }
 
 local PlutoKernels = {
-  Kernels .. "NavPE_de433_od122.bsp",
-  Kernels .. "NavSE_plu047_od122.bsp"
+  data .. "NavPE_de433_od122.bsp",
+  data .. "NavSE_plu047_od122.bsp"
 }
 
-asset.export("Kernels", Kernels)
+local ID = {
+  NewHorizons = "NEW HORIZONS",
+  Rex = "NH_REX",
+  PlutoBarycenter = coreKernels.ID.PlutoBarycenter,
+  Pluto = coreKernels.ID.Pluto,
+  Charon = "CHARON",
+  Nix = "NIX",
+  Hydra = "HYDRA",
+  Kerberos = "KERBEROS",
+  Styx = "SYNX"
+}
+
+local Frame = {
+  NewHorizons = "NH_SPACECRAFT",
+  Lorri = "NH_LORRI",
+  RalphLeisa = "NH_RALPH_LEISA",
+  RalphMvicPan1 = "NH_RALPH_MVIC_PAN1",
+  RalphMvicPan2 = "NH_RALPH_MVIC_PAN2",
+  RalphMvicRed = "NH_RALPH_MVIC_RED",
+  RalphMvicBlue = "NH_RALPH_MVIC_BLUE",
+  RalphMvicFT = "NH_RALPH_MVIC_FT",
+  RalphMvicMethane = "NH_RALPH_MVIC_METHANE",
+  RalphMvicNIR = "NH_RALPH_MVIC_NIR",
+  AliceAirglow = "NH_ALICE_AIRGLOW",
+  AliceSOC = "NH_ALICE_SOC",
+  Rex = "NH_REX",
+
+  Pluto = coreKernels.Frame.Pluto,
+  Charon = coreKernels.Frame.Charon,
+  Hydra = coreKernels.Frame.Hydra,
+  Styx = coreKernels.Frame.Styx,
+  Nix = coreKernels.Frame.Nix,
+  Kerberos = coreKernels.Frame.Kerberos
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(NewHorizonsKernels)
+  openspace.spice.loadKernel(PlutoKernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(PlutoKernels)
+  openspace.spice.unloadKernel(NewHorizonsKernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)
 asset.export("NewHorizonsKernels", NewHorizonsKernels)
 asset.export("PlutoKernels", PlutoKernels)

data/assets/scene/solarsystem/missions/newhorizons/pluto.asset

@@ -1,6 +1,7 @@
 local transforms = asset.require("./transforms")
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
 local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -41,13 +42,13 @@ local PlutoProjection = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "PLUTO",
-      Observer = "PLUTO BARYCENTER"
+      Target = kernels.ID.Pluto,
+      Observer = kernels.ID.PlutoBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "IAU_PLUTO",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Pluto,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Renderable = {
@@ -71,70 +72,70 @@ local PlutoProjection = {
       EventFile = assets .. "core_v9h_obs_getmets_v8_time_fix_nofrcd_mld.txt",
       -- SequenceType = "hybrid",
       SequenceType = "image-sequence",
-      Observer = "NEW HORIZONS",
-      Target = "PLUTO",
+      Observer = kernels.ID.NewHorizons,
+      Target = kernels.ID.Pluto,
       Aberration = "NONE",
       AspectRatio = 2,
       DataInputTranslation = {
         Instrument = {
           LORRI = {
             DetectorType = "Camera",
-            Spice = { "NH_LORRI" }
+            Spice = { kernels.Frame.Lorri }
           },
           RALPH_MVIC_PAN_FRAME = {
             DetectorType = "Scanner",
             StopCommand = "RALPH_ABORT",
-            Spice = { "NH_RALPH_MVIC_FT" }
+            Spice = { kernels.Frame.RalphMvicFT }
           },
           RALPH_MVIC_COLOR = {
             DetectorType = "Scanner",
             StopCommand = "END_NOM",
             Spice = {
-              "NH_RALPH_MVIC_NIR",
-              "NH_RALPH_MVIC_METHANE",
-              "NH_RALPH_MVIC_RED",
-              "NH_RALPH_MVIC_BLUE"
+              kernels.Frame.RalphMvicNIR,
+              kernels.Frame.RalphMvicMethane,
+              kernels.Frame.RalphMvicRed,
+              kernels.Frame.RalphMvicBlue
             }
           },
           RALPH_LEISA = {
             DetectorType = "Scanner",
             StopCommand = "END_NOM",
-            Spice = { "NH_RALPH_LEISA" }
+            Spice = { kernels.Frame.RalphLeisa }
           },
           RALPH_MVIC_PAN1 = {
             DetectorType = "Scanner",
             StopCommand = "END_NOM",
-            Spice = { "NH_RALPH_MVIC_PAN1" }
+            Spice = { kernels.Frame.RalphMvicPan1 }
           },
           RALPH_MVIC_PAN2 = {
             DetectorType = "Scanner",
             StopCommand = "END_NOM",
-            Spice = { "NH_RALPH_MVIC_PAN2" }
+            Spice = { kernels.Frame.RalphMvicPan2 }
           },
           ALICE_Use_AIRGLOW = {
             DetectorType = "Scanner",
             StopCommand = "ALICE_END_PIXELLIST",
-            Spice = { "NH_ALICE_AIRGLOW" }
+            Spice = { kernels.Frame.AliceAirglow }
           },
           ALICE_Use_AIRGLOW = {
             DetectorType = "Scanner",
             StopCommand = "ALICE_END_HISTOGRAM",
-            Spice = { "NH_ALICE_AIRGLOW" }
+            Spice = { kernels.Frame.AliceAirglow }
           },
           ALICE_Use_SOCC = {
             DetectorType = "Scanner",
             StopCommand = "ALICE_END_PIXELLIST",
-            Spice = { "NH_ALICE_SOC" }
+            Spice = { kernels.Frame.AliceSOC }
           },
           ALICE_Use_SOCC = {
             DetectorType = "Scanner",
             StopCommand = "ALICE_END_HISTOGRAM",
-            Spice = { "NH_ALICE_SOC" }
+            Spice = { kernels.Frame.AliceSOC }
           },
           REX_START = {
             DetectorType = "Scanner",
             StopCommand = "REX_MODE_OFF",
-            Spice = { "NH_REX" }
+            Spice = { kernels.Frame.Rex }
           }
         },
         Target = {
@@ -155,7 +156,7 @@ local PlutoProjection = {
         }
       },
       Instrument = {
-        Name = "NH_LORRI",
+        Name = kernels.Frame.Lorri,
         Method = "ELLIPSOID",
         Aberration = "NONE",
         Fovy = 0.2907,
@@ -164,12 +165,12 @@ local PlutoProjection = {
         Far = 10000
       },
       PotentialTargets = {
-        "PLUTO",
-        "CHARON",
-        "NIX",
-        "HYDRA",
-        "P5",
-        "P4"
+        kernels.ID.Pluto,
+        kernels.ID.Charon,
+        kernels.ID.Nix,
+        kernels.ID.Hydra,
+        kernels.ID.Styx,
+        kernels.ID.Kerberos
       }
     }
   },
@@ -225,10 +226,10 @@ local PlutoShadow = {
     Type = "RenderableShadowCylinder",
     Opacity = 0.25,
     TerminatorType = "PENUMBRAL",
-    LightSource = "SUN",
-    Observer = "NEW HORIZONS",
-    Body = "PLUTO",
-    BodyFrame = "IAU_PLUTO",
+    LightSource = coreKernels.ID.Sun,
+    Observer = kernels.ID.NewHorizons,
+    Body = kernels.ID.Pluto,
+    BodyFrame = kernels.Frame.Pluto,
     Aberration = "NONE"
   },
   GUI = {
@@ -239,8 +240,6 @@ local PlutoShadow = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.NewHorizonsKernels)
-
   openspace.addSceneGraphNode(PlutoProjection)
   openspace.addSceneGraphNode(PlutoBarycenterLabel)
   openspace.addSceneGraphNode(PlutoText)
@@ -252,8 +251,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(PlutoText)
   openspace.removeSceneGraphNode(PlutoBarycenterLabel)
   openspace.removeSceneGraphNode(PlutoProjection)
-
-  openspace.spice.unloadKernel(kernels.NewHorizonsKernels)
 end)
 
 asset.export(PlutoProjection)

data/assets/scene/solarsystem/missions/newhorizons/trail.asset

@@ -1,4 +1,5 @@
 local transforms = asset.require("./transforms")
+local kernels = asset.require("./kernels")
 
 
 
@@ -9,8 +10,8 @@ local TrailAtPluto = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "NEW HORIZONS",
-      Observer = "PLUTO BARYCENTER"
+      Target = kernels.ID.NewHorizons,
+      Observer = kernels.ID.PlutoBarycenter
     },
     Color = { 1.0, 0.8, 0.4 },
     ShowFullTrail = true,

data/assets/scene/solarsystem/missions/newhorizons/transforms.asset

@@ -1,5 +1,6 @@
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
 local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -14,8 +15,8 @@ local PlutoBarycenterAccurate = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "PLUTO BARYCENTER",
-      Observer = "SSB"
+      Target = kernels.ID.PlutoBarycenter,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   GUI = {
@@ -30,13 +31,13 @@ local NewHorizonsPosition = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "NEW HORIZONS",
-      Observer = "PLUTO BARYCENTER"
+      Target = kernels.ID.NewHorizons,
+      Observer = kernels.ID.PlutoBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "NH_SPACECRAFT",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.NewHorizons,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   GUI = {
@@ -47,9 +48,6 @@ local NewHorizonsPosition = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.PlutoKernels)
-  openspace.spice.loadKernel(kernels.NewHorizonsKernels)
-
   openspace.addSceneGraphNode(PlutoBarycenterAccurate)
   openspace.addSceneGraphNode(NewHorizonsPosition)
 end)
@@ -57,9 +55,6 @@ end)
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(NewHorizonsPosition)
   openspace.removeSceneGraphNode(PlutoBarycenterAccurate)
-
-  openspace.spice.unloadKernel(kernels.NewHorizonsKernels)
-  openspace.spice.unloadKernel(kernels.PlutoKernels)
 end)
 
 asset.export(PlutoBarycenterAccurate)

data/assets/scene/solarsystem/missions/osirisrex/bennu.asset

@@ -1,5 +1,7 @@
 local transforms = asset.require("./transforms")
 local sun = asset.require("scene/solarsystem/sun/sun")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -11,16 +13,14 @@ local models = asset.resource({
 })
 
 
-local BennuBodyId = "2101955"
-
 local Bennu = {
   Identifier = "Bennu",
   Parent = transforms.BennuBarycenter.Identifier,
   Transform = {
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "IAU_BENNU",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Bennu,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Renderable = {

data/assets/scene/solarsystem/missions/osirisrex/bennu_projection.asset

@@ -1,5 +1,7 @@
 local transforms = asset.require("./transforms")
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -25,35 +27,33 @@ local imagesA = asset.resource({
 })
 
 
-local BennuBodyId = "2101955"
-
 local BennuProjection = {
   Identifier = "BennuProjection",
   Parent = transforms.BennuBarycenter.Identifier,
   Transform = {
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "IAU_BENNU",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Bennu,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Renderable = {
     Enabled = true,
     Type = "RenderableModelProjection",
-    Body = BennuBodyId,
+    Body = kernels.ID.Bennu,
     GeometryFile = models .. "Bennu_v20_200k_an.obj",
     Projection = {
       Sequence = { images, imagesA },
       SequenceType = "image-sequence",
-      Observer = "OSIRIS-REX",
-      Target = BennuBodyId,
+      Observer = kernels.ID.OsirisRex,
+      Target = kernels.ID.Bennu,
       Aberration = "NONE",
       TextureMap = true,
       DataInputTranslation = {
         Instruments = {
           ORX_OCAMS_POLYCAM = {
             DetectorType = "Camera",
-            Spice = { "ORX_OCAMS_POLYCAM" },
+            Spice = { kernels.Frame.Polycam },
           },
         },
         Target = {
@@ -72,7 +72,7 @@ local BennuProjection = {
         }
       },
       Instrument = { -- INVALID DATA - JUST FOR TESTING
-        Name = "ORX_OCAMS_POLYCAM",
+        Name = kernels.Frame.Polycam,
         Method = "ELLIPSOID",
         Aberration = "NONE",
         Fovy = 0.792,
@@ -95,8 +95,8 @@ local BennuTrail = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = BennuBodyId,
-      Observer = "SSB"
+      Target = kernels.ID.Bennu,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.4, 0.0, 0.7 },
     StartTime = "2015 JAN 01 00:00:00.000",

data/assets/scene/solarsystem/missions/osirisrex/dashboard.asset

@@ -1,3 +1,8 @@
+local transforms = asset.require("./transforms")
+local model = asset.require("./model")
+
+
+
 local Spacing = {
   Type = "DashboardItemSpacing",
   Identifier = "OsirisRexSpacing",
@@ -10,9 +15,9 @@ local Distance = {
   Identifier = "OsirisRexBennuDistance",
   GuiName = "OSIRIS-REx Bennu Distance",
   SourceType = "Node",
-  SourceNodeName = "OsirisRex",
+  SourceNodeName = model.OsirisRex.Identifier,
   DestinationType = "Node",
-  DestinationNodeName = "BennuBarycenter"
+  DestinationNodeName = transforms.BennuBarycenter.Identifier
 }
 
 local Instruments = {

data/assets/scene/solarsystem/missions/osirisrex/imageplane.asset

@@ -1,4 +1,5 @@
 local transforms = asset.require("./transforms")
+local kernels = asset.require("./kernels")
 
 
 
@@ -17,10 +18,10 @@ local ImagePlane = {
   Parent = transforms.BennuBarycenter.Identifier,
   Renderable = {
     Type = "RenderablePlaneProjection",
-    Frame = "IAU_BENNU",
+    Frame = kernels.Frame.Bennu,
     DefaultTarget = BennuBodyId,
-    Spacecraft = "OSIRIS-REX",
-    Instrument = "ORX_OCAMS_POLYCAM",
+    Spacecraft = kernels.ID.OsirisRex,
+    Instrument = kernels.Frame.Polycam,
     Moving = false,
     Texture = textures .. "defaultProj.png"
   },

data/assets/scene/solarsystem/missions/osirisrex/kernels.asset

@@ -1,4 +1,8 @@
-local kernels = asset.resource({
+local coreKernels = asset.require("spice/core")
+
+
+
+local data = asset.resource({
   Name = "Osiris Rex Kernels",
   Type = "HttpSynchronization",
   Identifier = "osirisrex_kernels",
@@ -6,111 +10,133 @@ local kernels = asset.resource({
 })
 
 
-local OsirisRexKernels = {
-  kernels .. "orx_v14.tf",
-  kernels .. "orx_ocams_v07.ti",
-  kernels .. "orx_rexis_v01.ti",
-  kernels .. "ORX_SCLKSCET.00061.tsc",
-  kernels .. "bennu_v17.tpc",
-  kernels .. "orx_struct_v04.bsp",
-  kernels .. "orx_sa_red_200106_v02.bc",
-  kernels .. "orx_sa_red_200107_v02.bc",
-  kernels .. "orx_sa_red_200108_v02.bc",
-  kernels .. "orx_sa_red_200109_v02.bc",
-  kernels .. "orx_sa_red_200110_v02.bc",
-  kernels .. "orx_sa_rel_200106_200112_v01.bc",
-  kernels .. "orx_sc_rel_160909_160911_v01.bc",
-  kernels .. "orx_sc_rel_160912_160918_v01.bc",
-  kernels .. "orx_sc_rel_160919_160925_v01.bc",
-  kernels .. "orx_sc_rel_160926_161002_v01.bc",
-  kernels .. "orx_sc_rel_181029_181104_v02.bc",
-  kernels .. "orx_sc_rel_190218_190224_v02.bc",
-  kernels .. "orx_sc_rel_200106_200112_v01.bc",
-  kernels .. "orx_sc_rel_201019_201025_v01.bc",
-  kernels .. "orx_sc_rel_201012_201018_v01.bc",
-  kernels .. "orx_sc_red_200106_v02.bc",
-  kernels .. "orx_sc_red_200107_v02.bc",
-  kernels .. "orx_sc_red_200108_v02.bc",
-  kernels .. "orx_sc_red_200109_v02.bc",
-  kernels .. "orx_sc_red_201020_v02.bc",
-  kernels .. "orx_sc_red_201017_v03.bc",
-  kernels .. "orx_sc_red_201018_v02.bc",
-  kernels .. "orx_sc_red_201019_v02.bc",
-  kernels .. "orx_r_160909_160910_v01.bc",
-  kernels .. "orx_r_160910_160913_v01.bc",
-  kernels .. "orx_r_160913_160915_v01.bc",
-  kernels .. "orx_r_160915_160919_v01.bc",
-  kernels .. "orx_r_160918_160922_v01.bc",
-  kernels .. "orx_r_160919_160922_v01.bc",
-  kernels .. "orx_r_200105_200107_v02.bc",
-  kernels .. "orx_r_200106_200108_v02.bc",
-  kernels .. "orx_r_200107_200109_v02.bc",
-  kernels .. "orx_r_200107_200112_v01.bc",
-  kernels .. "orx_r_200108_200110_v02.bc",
-  kernels .. "orx_r_200109_200111_v02.bc",
-  kernels .. "orx_r_201019_201021_v06.bc",
-  kernels .. "orx_r_201018_201021_v02.bc",
-  kernels .. "orx_r_201018_201020_v03.bc",
-  kernels .. "orx_r_201017_201019_v03.bc",
-  kernels .. "orx_p_160910_161005_xc001b_v01.bc",
-  kernels .. "orx_p_200106_200113_2002_od205_v01.bc",
-  kernels .. "orx_p_200106_200113_2002_od209_v01.bc",
-  kernels .. "orx_p_200106_200113_2002_od210_v01.bc",
-  kernels .. "orx_p_201019_201026_2043tag_od293_v03.bc",
-  kernels .. "orx_p_201012_201019_2042_od291_v04.bc",
-  kernels .. "orx_p_210411_210510_xq006_od297_v05.bc",
-  kernels .. "orx_p_210509_210513_xr001_adm_final_mod_od311_v01.bc",
-  kernels .. "orx_p_210509_210607_xr001_od298_v00.bc",
-  kernels .. "orx_p_230824_231008_src_release_od298_v00.bc",
-  kernels .. "OREX_20160904_M45_complete.bsp",
-  kernels .. "OREX_20160908_M60_complete.bsp",
-  kernels .. "orx_struct_polycam_v01.bc",
-  kernels .. "de424.bsp",
-  kernels .. "bennu_refdrmc_v1.bsp",
-  kernels .. "orx_160908_231024_pgaa2_day06m60.bsp",
-  kernels .. "orx_160908_231024_pgaa3_day06m60_v1.bsp",
-  kernels .. "orx_160909_161228_160919_od005_tcm1_v2.bsp",
-  kernels .. "orx_160909_161228_160930_od006_tcm1_v1.bsp",
-  kernels .. "orx_160909_170101_160912_od004_v1.bsp",
-  kernels .. "orx_160909_170101_161010_od008_v1.bsp",
-  kernels .. "spk_orx_160908_231024_pgaa2_day06m60_v3.bsp",
-  kernels .. "orx_160909_231024_refod009_v2.bsp",
-  kernels .. "orx_171006_231024_171005_refod027_v1.bsp",
-  kernels .. "orx_180301_181201_180921_od044_v1.bsp",
-  kernels .. "orx_180801_190302_181218_od077_v1.bsp",
-  kernels .. "orx_181203_190302_190104_od085_v1.bsp",
-  kernels .. "orx_181231_190305_190215_od099_v1.bsp",
-  kernels .. "orx_190201_190327_190315_od110_v1.bsp",
-  kernels .. "orx_190301_190424_190412_od125_v1.bsp",
-  kernels .. "orx_190401_190522_190508_od137_v1.bsp",
-  kernels .. "orx_190426_190605_190522_od143_v1.bsp",
-  kernels .. "orx_190511_190619_190603_od148_v1.bsp",
-  kernels .. "orx_190601_190625_190614_od154_v1.bsp",
-  kernels .. "orx_190612_190917_190730_od170_v1.bsp",
-  kernels .. "orx_190712_190917_190814_od175_v1.bsp",
-  kernels .. "orx_190809_191008_190923_od182_v1.bsp",
-  kernels .. "orx_190809_191015_191004_od187_v1.bsp",
-  kernels .. "orx_190915_191029_191014_od191_v1.bsp",
-  kernels .. "orx_191001_191105_191021_od194_v1.bsp",
-  kernels .. "orx_191015_191112_191030_od198_v1.bsp",
-  kernels .. "orx_191027_200101_191104_od200_v1.bsp",
-  kernels .. "orx_191101_200225_200214_od223_v1.bsp",
-  kernels .. "orx_200127_200324_200311_od232_v1.bsp",
-  kernels .. "orx_200305_200421_200410_od239_v1.bsp",
-  kernels .. "orx_200401_200418_200418_od242_v2.bsp",
-  kernels .. "orx_200414_200519_200504_od248_v1.bsp",
-  kernels .. "orx_200430_200714_200701_od263_v1.bsp",
-  kernels .. "orx_200616_200811_200727_od269_v1.bsp",
-  kernels .. "orx_200709_200814_200814_od276_v1.bsp",
-  kernels .. "orx_200811_200908_200828_od280_v1.bsp",
-  kernels .. "orx_200827_201020_201020_od294_v1.bsp",
-  kernels .. "orx_201020_201020_201020_od294_v1.bsp",
-  kernels .. "orx_201020_201109_201020_od294_v1.bsp",
-  kernels .. "orx_201020_210524_210103_od297_v1.bsp",
-  kernels .. "orx_210101_210330_210310_od302_v1.bsp",
-  kernels .. "orx_210115_210701_210426_od310-N-ADM-P_v1.bsp",
-  kernels .. "orx_210408_210701_210503_od311-N-ADM-F_v1.bsp",
-  kernels .. "orx_210509_231025_210119_od298-R-ADM1-P-DB1_v1.bsp"
+local Kernels = {
+  data .. "orx_v14.tf",
+  data .. "orx_ocams_v07.ti",
+  data .. "orx_rexis_v01.ti",
+  data .. "ORX_SCLKSCET.00061.tsc",
+  data .. "bennu_v17.tpc",
+  data .. "orx_struct_v04.bsp",
+  data .. "orx_sa_red_200106_v02.bc",
+  data .. "orx_sa_red_200107_v02.bc",
+  data .. "orx_sa_red_200108_v02.bc",
+  data .. "orx_sa_red_200109_v02.bc",
+  data .. "orx_sa_red_200110_v02.bc",
+  data .. "orx_sa_rel_200106_200112_v01.bc",
+  data .. "orx_sc_rel_160909_160911_v01.bc",
+  data .. "orx_sc_rel_160912_160918_v01.bc",
+  data .. "orx_sc_rel_160919_160925_v01.bc",
+  data .. "orx_sc_rel_160926_161002_v01.bc",
+  data .. "orx_sc_rel_181029_181104_v02.bc",
+  data .. "orx_sc_rel_190218_190224_v02.bc",
+  data .. "orx_sc_rel_200106_200112_v01.bc",
+  data .. "orx_sc_rel_201019_201025_v01.bc",
+  data .. "orx_sc_rel_201012_201018_v01.bc",
+  data .. "orx_sc_red_200106_v02.bc",
+  data .. "orx_sc_red_200107_v02.bc",
+  data .. "orx_sc_red_200108_v02.bc",
+  data .. "orx_sc_red_200109_v02.bc",
+  data .. "orx_sc_red_201020_v02.bc",
+  data .. "orx_sc_red_201017_v03.bc",
+  data .. "orx_sc_red_201018_v02.bc",
+  data .. "orx_sc_red_201019_v02.bc",
+  data .. "orx_r_160909_160910_v01.bc",
+  data .. "orx_r_160910_160913_v01.bc",
+  data .. "orx_r_160913_160915_v01.bc",
+  data .. "orx_r_160915_160919_v01.bc",
+  data .. "orx_r_160918_160922_v01.bc",
+  data .. "orx_r_160919_160922_v01.bc",
+  data .. "orx_r_200105_200107_v02.bc",
+  data .. "orx_r_200106_200108_v02.bc",
+  data .. "orx_r_200107_200109_v02.bc",
+  data .. "orx_r_200107_200112_v01.bc",
+  data .. "orx_r_200108_200110_v02.bc",
+  data .. "orx_r_200109_200111_v02.bc",
+  data .. "orx_r_201019_201021_v06.bc",
+  data .. "orx_r_201018_201021_v02.bc",
+  data .. "orx_r_201018_201020_v03.bc",
+  data .. "orx_r_201017_201019_v03.bc",
+  data .. "orx_p_160910_161005_xc001b_v01.bc",
+  data .. "orx_p_200106_200113_2002_od205_v01.bc",
+  data .. "orx_p_200106_200113_2002_od209_v01.bc",
+  data .. "orx_p_200106_200113_2002_od210_v01.bc",
+  data .. "orx_p_201019_201026_2043tag_od293_v03.bc",
+  data .. "orx_p_201012_201019_2042_od291_v04.bc",
+  data .. "orx_p_210411_210510_xq006_od297_v05.bc",
+  data .. "orx_p_210509_210513_xr001_adm_final_mod_od311_v01.bc",
+  data .. "orx_p_210509_210607_xr001_od298_v00.bc",
+  data .. "orx_p_230824_231008_src_release_od298_v00.bc",
+  data .. "OREX_20160904_M45_complete.bsp",
+  data .. "OREX_20160908_M60_complete.bsp",
+  data .. "orx_struct_polycam_v01.bc",
+  data .. "de424.bsp",
+  data .. "bennu_refdrmc_v1.bsp",
+  data .. "orx_160908_231024_pgaa2_day06m60.bsp",
+  data .. "orx_160908_231024_pgaa3_day06m60_v1.bsp",
+  data .. "orx_160909_161228_160919_od005_tcm1_v2.bsp",
+  data .. "orx_160909_161228_160930_od006_tcm1_v1.bsp",
+  data .. "orx_160909_170101_160912_od004_v1.bsp",
+  data .. "orx_160909_170101_161010_od008_v1.bsp",
+  data .. "spk_orx_160908_231024_pgaa2_day06m60_v3.bsp",
+  data .. "orx_160909_231024_refod009_v2.bsp",
+  data .. "orx_171006_231024_171005_refod027_v1.bsp",
+  data .. "orx_180301_181201_180921_od044_v1.bsp",
+  data .. "orx_180801_190302_181218_od077_v1.bsp",
+  data .. "orx_181203_190302_190104_od085_v1.bsp",
+  data .. "orx_181231_190305_190215_od099_v1.bsp",
+  data .. "orx_190201_190327_190315_od110_v1.bsp",
+  data .. "orx_190301_190424_190412_od125_v1.bsp",
+  data .. "orx_190401_190522_190508_od137_v1.bsp",
+  data .. "orx_190426_190605_190522_od143_v1.bsp",
+  data .. "orx_190511_190619_190603_od148_v1.bsp",
+  data .. "orx_190601_190625_190614_od154_v1.bsp",
+  data .. "orx_190612_190917_190730_od170_v1.bsp",
+  data .. "orx_190712_190917_190814_od175_v1.bsp",
+  data .. "orx_190809_191008_190923_od182_v1.bsp",
+  data .. "orx_190809_191015_191004_od187_v1.bsp",
+  data .. "orx_190915_191029_191014_od191_v1.bsp",
+  data .. "orx_191001_191105_191021_od194_v1.bsp",
+  data .. "orx_191015_191112_191030_od198_v1.bsp",
+  data .. "orx_191027_200101_191104_od200_v1.bsp",
+  data .. "orx_191101_200225_200214_od223_v1.bsp",
+  data .. "orx_200127_200324_200311_od232_v1.bsp",
+  data .. "orx_200305_200421_200410_od239_v1.bsp",
+  data .. "orx_200401_200418_200418_od242_v2.bsp",
+  data .. "orx_200414_200519_200504_od248_v1.bsp",
+  data .. "orx_200430_200714_200701_od263_v1.bsp",
+  data .. "orx_200616_200811_200727_od269_v1.bsp",
+  data .. "orx_200709_200814_200814_od276_v1.bsp",
+  data .. "orx_200811_200908_200828_od280_v1.bsp",
+  data .. "orx_200827_201020_201020_od294_v1.bsp",
+  data .. "orx_201020_201020_201020_od294_v1.bsp",
+  data .. "orx_201020_201109_201020_od294_v1.bsp",
+  data .. "orx_201020_210524_210103_od297_v1.bsp",
+  data .. "orx_210101_210330_210310_od302_v1.bsp",
+  data .. "orx_210115_210701_210426_od310-N-ADM-P_v1.bsp",
+  data .. "orx_210408_210701_210503_od311-N-ADM-F_v1.bsp",
+  data .. "orx_210509_231025_210119_od298-R-ADM1-P-DB1_v1.bsp"
 }
 
-asset.export("kernels", OsirisRexKernels)
+local ID = {
+  OsirisRex = "OSIRIS-REX",
+  Bennu = "2101955"
+}
+
+local Frame = {
+  OsirisRex = "ORX_SPACECRAFT",
+  Polycam = "ORX_OCAMS_POLYCAM",
+  Rexis = "ORX_REXIS",
+  Bennu = coreKernels.Frame.Bennu
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(Kernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(Kernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)

data/assets/scene/solarsystem/missions/osirisrex/model.asset

@@ -3,6 +3,7 @@ local sun = asset.require("scene/solarsystem/sun/sun")
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
 local earthTransforms = asset.require("scene/solarsystem/planets/earth/transforms")
 local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -22,13 +23,13 @@ local OsirisRex = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "OSIRIS-REX",
-      Observer = "SSB"
+      Target = kernels.ID.OsirisRex,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "ORX_SPACECRAFT",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.OsirisRex,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Renderable = {
@@ -59,8 +60,8 @@ local PolyCam = {
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "ORX_OCAMS_POLYCAM",
-      DestinationFrame = "ORX_SPACECRAFT"
+      SourceFrame = kernels.Frame.Polycam,
+      DestinationFrame = kernels.Frame.OsirisRex
     }
   },
   Renderable = {
@@ -84,6 +85,17 @@ local PolyCam = {
 local Rexis = {
   Identifier = "ORX_REXIS",
   Parent = OsirisRex.Identifier,
+  Transform = {
+    Translation = {
+      Type = "StaticTranslation",
+      Position = { 0, 0.3371, 0.2712 }
+    },
+    Rotation = {
+      Type = "SpiceRotation",
+      SourceFrame = kernels.Frame.Rexis,
+      DestinationFrame = kernels.Frame.OsirisRex
+    }
+  },
   Renderable = {
     Type = "RenderableModel",
     GeometryFile = models .. "orx_rexis_resized_12_sep_2016.obj",
@@ -96,17 +108,6 @@ local Rexis = {
       }
     }
   },
-  Transform = {
-    Translation = {
-      Type = "StaticTranslation",
-      Position = { 0, 0.3371, 0.2712 }
-    },
-    Rotation = {
-      Type = "SpiceRotation",
-      SourceFrame = "ORX_REXIS",
-      DestinationFrame = "ORX_SPACECRAFT"
-    }
-  },
   GUI = {
     Name = "REXIS",
     Path = "/Solar System/Missions/OSIRIS REx/Instruments"
@@ -119,14 +120,14 @@ local PolyCamFov = {
   Renderable = {
     Type = "RenderableFov",
     Body = "OSIRIS-REX",
-    Frame = "ORX_OCAMS_POLYCAM",
+    Frame = kernels.Frame.Polycam,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "ORX_OCAMS_POLYCAM",
+      Name = kernels.Frame.Polycam,
       Method = "ELLIPSOID",
       Aberration = "NONE"
     },
-    PotentialTargets = { BennuBodyId }
+    PotentialTargets = { kernels.ID.Bennu }
   },
   GUI = {
     Name = "POLYCAM FOV",
@@ -141,17 +142,17 @@ local PolyCamFov = {
 --   Parent = Rexis.Identifier,
 --   Renderable = {
 --     Type = "RenderableFov",
---     Body = "OSIRIS-REX",
---     Frame = "ORX_REXIS",
+--     Body = kernels.Frame.OsirisRex,
+--     Frame = kernels.Frame.Rexis,
 --     RGB = { 0.8, 0.7, 0.7 },
 --     Instrument = {
 --       Name = "ORX_REXIS",
 --       Method = "ELLIPSOID",
 --       Aberration = "NONE"
 --     },
---     PotentialTargets = { BennuBodyId },
+--     PotentialTargets = { kernels.ID.Bennu },
 --     FrameConversions = {
---       [BennuBodyId] = "IAU_BENNU"
+--       [kernels.ID.Bennu] = kernels.Frame.Bennu
 --     }
 --   },
 --   GUI = {
@@ -161,8 +162,6 @@ local PolyCamFov = {
 -- }
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(kernels.kernels)
-
   openspace.addSceneGraphNode(OsirisRex)
   openspace.addSceneGraphNode(PolyCam)
   openspace.addSceneGraphNode(Rexis)
@@ -176,8 +175,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(Rexis)
   openspace.removeSceneGraphNode(PolyCam)
   openspace.removeSceneGraphNode(OsirisRex)
-
-  openspace.spice.unloadKernel(kernels.kernels)
 end)
 
 asset.export(OsirisRex)

data/assets/scene/solarsystem/missions/osirisrex/trail.asset

@@ -1,11 +1,11 @@
 local transforms = asset.require("./transforms")
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
 local earthTransforms = asset.require("scene/solarsystem/planets/earth/transforms")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
-local BennuBodyId = 2101955
-
 local OsirisRexTrailEarth = {
   Identifier = "OsirisRexTrailEarth",
   Parent = earthTransforms.EarthIAU.Identifier,
@@ -13,9 +13,9 @@ local OsirisRexTrailEarth = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "OSIRIS-REX",
-      Frame = "IAU_EARTH",
-      Observer = "EARTH"
+      Target = kernels.Frame.OsirisRex,
+      Frame = coreKernels.Frame.Earth,
+      Observer = coreKernels.ID.Earth
     },
     Color = { 0.9, 0.9, 0.0 },
     StartTime = "2016 SEP 8 23:05:00.50",
@@ -35,8 +35,8 @@ local OsirisRexTrailSolarSystem = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "OSIRIS-REX",
-      Observer = "SSB"
+      Target = kernels.ID.OsirisRex,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.2, 0.9, 0.2 },
     StartTime = "2016 SEP 8 23:05:00.50",
@@ -56,8 +56,8 @@ local OsirisRexTrailBennu = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "OSIRIS-REX",
-      Observer = BennuBodyId
+      Target = kernels.ID.OsirisRex,
+      Observer = kernels.ID.Bennu
     },
     Color = { 0.9, 0.2, 0.9 },
     StartTime = "2018 SEP 4 00:00:00",

data/assets/scene/solarsystem/missions/osirisrex/transforms.asset

@@ -1,17 +1,17 @@
 local transforms = asset.require("scene/solarsystem/sun/transforms")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
-local BennuBodyId = 2101955
-
 local BennuBarycenter = {
   Identifier = "BennuBarycenter",
   Parent = transforms.SolarSystemBarycenter.Identifier,
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = BennuBodyId,
-      Observer = "SSB"
+      Target = kernels.ID.Bennu,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   GUI = {

data/assets/scene/solarsystem/missions/perseverance/kernels.asset

@@ -0,0 +1,50 @@
+local coreKernels = asset.require("spice/core")
+
+
+
+local data = asset.resource({
+  Name = "Mars 2020 Kernels",
+  Type = "HttpSynchronization",
+  Identifier = "perseverance_kernels",
+  Version = 2
+})
+
+
+local Kernels = {
+  data .. "m2020.tf",
+  data .. "m2020.tsc",
+  data .. "m2020_v04.tf",
+
+  data .. "m2020_cruise_recon_nospin_v1.bc",
+  data .. "m2020_cruise_recon_rawrt_v1.bc",
+  data .. "m2020_cruise_recon_raweng_v1.bc",
+  data .. "m2020_edl_v01.bc",
+
+  data .. "m2020_cruise_od138_v1.bsp",
+  data .. "m2020_edl_v01.bsp",
+  data .. "m2020_surf_rover_loc_0000_0089_v1.bsp"
+}
+
+local ID = {
+  Perseverance = -168,
+
+  Mars = coreKernels.ID.Mars,
+  MarsBarycenter = coreKernels.ID.MarsBarycenter
+}
+
+local Frame = {
+  Mars = coreKernels.Frame.Mars
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(Kernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(Kernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)
+

data/assets/scene/solarsystem/missions/perseverance/model.asset

@@ -1,7 +1,8 @@
 local trail = asset.require("./trail")
 local marsTransforms = asset.require("scene/solarsystem/planets/mars/transforms")
 local sun = asset.require("scene/solarsystem/sun/sun")
-local spice = asset.require("./spice")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -16,41 +17,41 @@ local models = asset.resource({
 local TranslationKeyframes = {
   ["1850 JAN 01 00:00:00"] = {
     Type = "SpiceTranslation",
-    Target = spice.ID,
-    Observer = "MARS",
-    Frame = "IAU_MARS",
+    Target = kernels.ID.Perseverance,
+    Observer = kernels.ID.Mars,
+    Frame = kernels.Frame.Mars,
     FixedDate = "2020 JUL 17 13:56:43"
   },
   ["2020 JUL 17 13:56:42"] = {
     Type = "SpiceTranslation",
-    Target = spice.ID,
-    Observer = "MARS",
-    Frame = "IAU_MARS",
+    Target = kernels.ID.Perseverance,
+    Observer = kernels.ID.Mars,
+    Frame = kernels.Frame.Mars,
     FixedDate = "2020 JUL 17 13:56:43"
   },
   ["2020 JUL 17 13:56:43"] = {
     Type = "SpiceTranslation",
-    Target = spice.ID,
-    Observer = "MARS",
-    Frame = "IAU_MARS"
+    Target = kernels.ID.Perseverance,
+    Observer = kernels.ID.Mars,
+    Frame = kernels.Frame.Mars
   },
   ["2020 JUL 17 13:56:44"] = {
     Type = "SpiceTranslation",
-    Target = spice.ID,
-    Observer = "MARS",
-    Frame = "IAU_MARS"
+    Target = kernels.ID.Perseverance,
+    Observer = kernels.ID.Mars,
+    Frame = kernels.Frame.Mars
   },
   ["2021 FEB 18 20:43:48"] = {
     Type = "SpiceTranslation",
-    Target = spice.ID,
-    Observer = "MARS",
-    Frame = "IAU_MARS"
+    Target = kernels.ID.Perseverance,
+    Observer = kernels.ID.Mars,
+    Frame = kernels.Frame.Mars
   },
   ["2021 FEB 18 20:43:49"] = {
     Type = "SpiceTranslation",
-    Target = spice.ID,
-    Observer = "MARS",
-    Frame = "IAU_MARS",
+    Target = kernels.ID.Perseverance,
+    Observer = kernels.ID.Mars,
+    Frame = kernels.Frame.Mars,
     FixedDate = "2021 FEB 18 20:43:48"
   }
 }
@@ -61,13 +62,13 @@ local PerseveranceNode = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "MARS",
-      Observer = "MARS BARYCENTER"
+      Target = kernels.ID.Mars,
+      Observer = kernels.ID.MarsBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "IAU_MARS",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Mars,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   GUI = {
@@ -129,8 +130,6 @@ local Body = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(spice.Kernels)
-
   openspace.addSceneGraphNode(PerseveranceNode)
   openspace.addSceneGraphNode(Perseverance)
   openspace.addSceneGraphNode(PerseveranceModel)
@@ -142,8 +141,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(PerseveranceModel)
   openspace.removeSceneGraphNode(Perseverance)
   openspace.removeSceneGraphNode(PerseveranceNode)
-
-  openspace.spice.unloadKernel(spice.Kernels)
 end)
 
 asset.export(PerseveranceNode)

data/assets/scene/solarsystem/missions/perseverance/spice.asset

@@ -1,26 +0,0 @@
-local kernels = asset.resource({
-  Name = "Mars 2020 Kernels",
-  Type = "HttpSynchronization",
-  Identifier = "perseverance_kernels",
-  Version = 2
-})
-
-
-local m2020_kernels = {
-  kernels .. "m2020.tf",
-  kernels .. "m2020.tsc",
-  kernels .. "m2020_v04.tf",
-
-  kernels .. "m2020_cruise_recon_nospin_v1.bc",
-  kernels .. "m2020_cruise_recon_rawrt_v1.bc",
-  kernels .. "m2020_cruise_recon_raweng_v1.bc",
-  kernels .. "m2020_edl_v01.bc",
-
-  kernels .. "m2020_cruise_od138_v1.bsp",
-  kernels .. "m2020_edl_v01.bsp",
-  kernels .. "m2020_surf_rover_loc_0000_0089_v1.bsp"
-}
-
-asset.export("Kernels", m2020_kernels)
-asset.export("ID", -168)
-

data/assets/scene/solarsystem/missions/perseverance/trail.asset

@@ -1,6 +1,7 @@
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
 local marsTransforms = asset.require("scene/solarsystem/planets/mars/transforms")
-local spice = asset.require("./spice")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -13,16 +14,16 @@ local PerseveranceTrailSun = {
   Parent = sunTransforms.SolarSystemBarycenter.Identifier,
   Renderable = {
     Type = "RenderableTrailTrajectory",
+    Enabled = false,
     Translation = {
       Type = "SpiceTranslation",
-      Target = spice.ID,
-      Observer = "SSB"
+      Target = kernels.ID.Perseverance,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.2, 0.7, 0.1 },
     StartTime = StartTime,
     EndTime = EndTime,
-    SampleInterval = 100,
-    Enabled = false
+    SampleInterval = 100
   },
   GUI = {
     Name = "Perseverance Trail (Sun)",
@@ -38,8 +39,8 @@ local PerseveranceTrailMars = {
     Enabled = false,
     Translation = {
       Type = "SpiceTranslation",
-      Target = spice.ID,
-      Observer = "MARS BARYCENTER"
+      Target = kernels.ID.Perseverance,
+      Observer = kernels.ID.MarsBarycenter
     },
     Color = { 0.7, 0.9, 0.6 },
     StartTime = ApproachMars,
@@ -54,8 +55,6 @@ local PerseveranceTrailMars = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(spice.Kernels)
-
   openspace.addSceneGraphNode(PerseveranceTrailSun)
   openspace.addSceneGraphNode(PerseveranceTrailMars)
 end)
@@ -63,8 +62,6 @@ end)
 asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(PerseveranceTrailMars)
   openspace.removeSceneGraphNode(PerseveranceTrailSun)
-
-  openspace.spice.unloadKernel(spice.Kernels)
 end)
 
 asset.export(PerseveranceTrailSun)

data/assets/scene/solarsystem/missions/pioneer/pioneer10.asset

@@ -1,5 +1,6 @@
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
 local model = asset.require("scene/solarsystem/missions/pioneer/pioneermodel")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -20,7 +21,7 @@ local Pioneer10 = {
     Translation = {
       Type = "SpiceTranslation",
       Target = Pioneer10ID,
-      Observer = "SSB"
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   Renderable = model.PioneerModel,
@@ -39,7 +40,7 @@ local Pioneer10Trail = {
     Translation = {
       Type = "SpiceTranslation",
       Target = Pioneer10ID,
-      Observer = "SSB"
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.70, 0.50, 0.20 },
     StartTime = "1972 MAR 03 02:04:00",

data/assets/scene/solarsystem/missions/pioneer/pioneer11.asset

@@ -1,5 +1,6 @@
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
 local model = asset.require("scene/solarsystem/missions/pioneer/pioneermodel")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -25,7 +26,7 @@ local Pioneer11 = {
     Translation = {
       Type = "SpiceTranslation",
       Target = Pioneer11ID,
-      Observer = "SSB"
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   Renderable = model.PioneerModel,
@@ -44,7 +45,7 @@ local Pioneer11Trail = {
     Translation = {
       Type = "SpiceTranslation",
       Target = Pioneer11ID,
-      Observer = "SSB"
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.70, 0.50, 0.20 },
     StartTime = "1973 APR 06 02:25:00.000",

data/assets/scene/solarsystem/missions/rosetta/67p.asset

@@ -1,4 +1,6 @@
 local transforms = asset.require("scene/solarsystem/sun/transforms")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -34,8 +36,8 @@ local Barycenter = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "CHURYUMOV-GERASIMENKO",
-      Observer = "SSB"
+      Target = kernels.ID.ChurymovGerasimenko,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   GUI = {
@@ -50,8 +52,8 @@ local Comet67P = {
   Transform = {
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "67P/C-G_CK",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.ChurymovGerasimenko,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   BoundingSphere = 5000.0,
@@ -61,8 +63,8 @@ local Comet67P = {
     Projection = {
       Sequence = { imagesDestination },
       SequenceType = "image-sequence",
-      Observer = "ROSETTA",
-      Target = "CHURYUMOV-GERASIMENKO",
+      Observer = kernels.ID.Rosetta,
+      Target = kernels.ID.ChurymovGerasimenko,
       Aberration = "NONE",
       TextureMap = true,
       ShadowMap = true,
@@ -70,7 +72,7 @@ local Comet67P = {
         Instrument = {
           NAVCAM = {
             DetectorType = "Camera",
-            Spice = { "ROS_NAVCAM-A" }
+            Spice = { kernels.Frame.NavCam }
           }
         },
         Target = {
@@ -95,7 +97,7 @@ local Comet67P = {
         }
       },
       Instrument = {
-        Name = "ROS_NAVCAM-A",
+        Name = kernels.Frame.NavCam,
         Method = "ELLIPSOID",
         Aberration = "NONE",
         Fovy = 5.00,
@@ -116,8 +118,8 @@ local Trail67P = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "CHURYUMOV-GERASIMENKO",
-      Observer = "SSB"
+      Target = kernels.ID.ChurymovGerasimenko,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.1, 0.9, 0.2 },
     StartTime = "2014 JAN 01 00:00:00.000",

data/assets/scene/solarsystem/missions/rosetta/dashboard.asset

@@ -1,4 +1,5 @@
-asset.require("./rosetta")
+local rosetta = asset.require("./rosetta")
+local cg = asset.require("./67p")
 
 
 
@@ -14,9 +15,9 @@ local Distance = {
   Identifier = "Rosetta67PDistance",
   GuiName = "Rosetta 67P Distance",
   SourceType = "Node",
-  SourceNodeName = "Rosetta",
+  SourceNodeName = rosetta.Rosetta.Identifier,
   DestinationType = "Node",
-  DestinationNodeName = "67P"
+  DestinationNodeName = cg.Comet67P.Identifier
 }
 
 local Instruments = {

data/assets/scene/solarsystem/missions/rosetta/kernels.asset

@@ -0,0 +1,80 @@
+local data = asset.resource({
+  Name = "Rosetta Kernels",
+  Type = "HttpSynchronization",
+  Identifier = "rosetta_kernels",
+  Version = 1
+})
+
+
+local Kernels = {
+  data .. "ROS_160718_STEP.TSC",
+  data .. "ros_triv.tsc",
+
+  data .. "CORB_DV_243_01___T19_00325.BSP",
+  data .. "CORB_DV_223_01___T19_00302.BSP",
+  data .. "CORB_DV_145_01___T19_00216.BSP",
+
+  data .. "LORB_DV_236_01___T19_00318.BSP",
+  data .. "LORB_DV_223_01___T19_00302.BSP",
+  data .. "LORB_DV_145_01___T19_00216.BSP",
+
+  data .. "RORB_DV_243_01___T19_00325.BSP",
+  data .. "RORB_DV_223_01___T19_00302.BSP",
+  data .. "RORB_DV_145_01___T19_00216.BSP",
+
+  data .. "ATNR_P040302093352_00127.BC",
+
+  data .. "ROS_STRUCT_V5.BSP",
+
+  data .. "ROS_NAVCAM_V01.TI",
+
+  data .. "ROS_CHURYUMOV_V01.TF",
+  data .. "ROS_V26.TF",
+
+  -- CK
+  -- Rosetta attitude
+  data .. "RATT_DV_243_01_01____00325.BC",
+  data .. "RATT_DV_223_01_01____00302.BC",
+  data .. "RATT_DV_145_01_01____00216.BC",
+
+  -- Comet attitude
+  data .. "CATT_DV_243_01_______00325.BC",
+  data .. "CATT_DV_223_01_______00302.BC",
+  data .. "CATT_DV_145_01_______00216.BC",
+
+  -- High gain antenna
+  data .. "ROS_HGA_2016_V0035.BC",
+  data .. "ROS_HGA_2015_V0053.BC",
+  data .. "ROS_HGA_2014_V0044.BC",
+
+  -- Solar arrays
+  data .. "ROS_SA_2016_V0034.BC",
+  data .. "ROS_SA_2015_V0042.BC",
+  data .. "ROS_SA_2014_V0047.BC",
+
+  data .. "ROS_CGS_RSOC_V03.TPC"
+}
+
+local ID = {
+  Rosetta = "ROSETTA",
+  Philae = "PHILAE",
+  ChurymovGerasimenko = "CHURYUMOV-GERASIMENKO"
+}
+
+local Frame = {
+  Rosetta = "ROS_SPACECRAFT",
+  NavCam = "ROS_NAVCAM-A",
+  ChurymovGerasimenko = "67P/C-G_CK"
+}
+
+
+asset.onInitialize(function()
+  openspace.spice.loadKernel(Kernels)
+end)
+
+asset.onDeinitialize(function()
+  openspace.spice.unloadKernel(Kernels)
+end)
+
+asset.export("ID", ID)
+asset.export("Frame", Frame)

data/assets/scene/solarsystem/missions/rosetta/rosetta.asset

@@ -1,6 +1,8 @@
 local sun = asset.require("scene/solarsystem/sun/sun")
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
 local transforms = asset.require("./67p")
+local kernels = asset.require("./kernels")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -11,63 +13,6 @@ local models = asset.resource({
   Version = 5
 })
 
-local kernels = asset.resource({
-  Name = "Rosetta Kernels",
-  Type = "HttpSynchronization",
-  Identifier = "rosetta_kernels",
-  Version = 1
-})
-
-
-local RosettaKernels = {
-  kernels .. "ROS_160718_STEP.TSC",
-  kernels .. "ros_triv.tsc",
-
-  kernels .. "CORB_DV_243_01___T19_00325.BSP",
-  kernels .. "CORB_DV_223_01___T19_00302.BSP",
-  kernels .. "CORB_DV_145_01___T19_00216.BSP",
-
-  kernels .. "LORB_DV_236_01___T19_00318.BSP",
-  kernels .. "LORB_DV_223_01___T19_00302.BSP",
-  kernels .. "LORB_DV_145_01___T19_00216.BSP",
-
-  kernels .. "RORB_DV_243_01___T19_00325.BSP",
-  kernels .. "RORB_DV_223_01___T19_00302.BSP",
-  kernels .. "RORB_DV_145_01___T19_00216.BSP",
-
-  kernels .. "ATNR_P040302093352_00127.BC",
-
-  kernels .. "ROS_STRUCT_V5.BSP",
-
-  kernels .. "ROS_NAVCAM_V01.TI",
-
-  kernels .. "ROS_CHURYUMOV_V01.TF",
-  kernels .. "ROS_V26.TF",
-
-  -- CK
-  -- Rosetta attitude
-  kernels .. "RATT_DV_243_01_01____00325.BC",
-  kernels .. "RATT_DV_223_01_01____00302.BC",
-  kernels .. "RATT_DV_145_01_01____00216.BC",
-
-  -- Comet attitude
-  kernels .. "CATT_DV_243_01_______00325.BC",
-  kernels .. "CATT_DV_223_01_______00302.BC",
-  kernels .. "CATT_DV_145_01_______00216.BC",
-
-  -- High gain antenna
-  kernels .. "ROS_HGA_2016_V0035.BC",
-  kernels .. "ROS_HGA_2015_V0053.BC",
-  kernels .. "ROS_HGA_2014_V0044.BC",
-
-  -- Solar arrays
-  kernels .. "ROS_SA_2016_V0034.BC",
-  kernels .. "ROS_SA_2015_V0042.BC",
-  kernels .. "ROS_SA_2014_V0047.BC",
-
-  kernels .. "ROS_CGS_RSOC_V03.TPC"
-}
-
 local RotationMatrix = {
   0, 1, 0, 0,
   0, 0, 1, 0,
@@ -81,13 +26,13 @@ local RosettaPosition = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "ROSETTA",
-      Observer = "SSB"
+      Target = kernels.ID.Rosetta,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "ROS_SPACECRAFT",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = kernels.Frame.Rosetta,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   GUI = {
@@ -132,13 +77,13 @@ local PhilaePosition = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "PHILAE",
-      Observer = "CHURYUMOV-GERASIMENKO"
+      Target = kernels.ID.Philae,
+      Observer = kernels.ID.ChurymovGerasimenko
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "ROS_SPACECRAFT",
-      DestinationFrame = "GALACTIC",
+      SourceFrame = kernels.Frame.Rosetta,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   GUI = {
@@ -189,11 +134,11 @@ local NavCamFov = {
   Parent = NavCam.Identifier,
   Renderable = {
     Type = "RenderableFov",
-    Body = "ROSETTA",
-    Frame = "ROS_NAVCAM-A",
+    Body = kernels.ID.Rosetta,
+    Frame = kernels.Frame.NavCam,
     RGB = { 0.8, 0.7, 0.7 },
     Instrument = {
-      Name = "ROS_NAVCAM-A",
+      Name = kernels.Frame.NavCam,
       Method = "ELLIPSOID",
       Aberration = "NONE"
     },
@@ -213,10 +158,10 @@ local ImagePlane = {
   Parent = transforms.Comet67P.Identifier,
   Renderable = {
     Type = "RenderablePlaneProjection",
-    Frame = "67P/C-G_CK",
+    Frame = kernels.Frame.ChurymovGerasimenko,
     DefaultTarget = "CHURYUMOV-GERASIMENKO",
-    Spacecraft = "ROSETTA",
-    Instrument = "ROS_NAVCAM-A",
+    Spacecraft = kernels.ID.Rosetta,
+    Instrument = kernels.Frame.NavCam,
     Moving = false,
     Texture = models .. "defaultProj.png"
   },
@@ -233,8 +178,8 @@ local RosettaCometTrail = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "ROSETTA",
-      Observer = "CHURYUMOV-GERASIMENKO"
+      Target = kernels.ID.Rosetta,
+      Observer = kernels.ID.ChurymovGerasimenko
     },
     Color = { 0.288, 0.375, 0.934 },
     StartTime = "2014 AUG 01 12:00:00",
@@ -254,8 +199,8 @@ local PhilaeTrail = {
     Type = "RenderableTrailTrajectory",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "PHILAE",
-      Observer = "CHURYUMOV-GERASIMENKO"
+      Target = kernels.ID.Philae,
+      Observer = kernels.ID.ChurymovGerasimenko
     },
     Color = { 0.8, 0.5, 1.0 },
     StartTime = "2014 NOV 12 08:35:00",
@@ -322,8 +267,6 @@ local TogglePhilaeTrail = {
 
 
 asset.onInitialize(function()
-  openspace.spice.loadKernel(RosettaKernels)
-
   openspace.addSceneGraphNode(RosettaPosition)
   openspace.addSceneGraphNode(Rosetta)
   openspace.addSceneGraphNode(PhilaePosition)
@@ -355,8 +298,6 @@ asset.onDeinitialize(function()
   openspace.removeSceneGraphNode(PhilaePosition)
   openspace.removeSceneGraphNode(Rosetta)
   openspace.removeSceneGraphNode(RosettaPosition)
-
-  openspace.spice.unloadKernel(RosettaKernels)
 end)
 
 asset.export(RosettaPosition)

data/assets/scene/solarsystem/missions/voyager/dashboard.asset

@@ -1,11 +1,16 @@
+local voyager1 = asset.require("./voyager1")
+local voyager2 = asset.require("./voyager2")
+local earth = asset.require("scene/solarsystem/planets/earth/earth")
+
+
 local DistanceVoyager1 = {
   Type = "DashboardItemDistance",
   Identifier = "Voyager1Distance",
   GuiName = "Voyager 1 - Earth Distance",
   SourceType = "Node",
-  SourceNodeName = "Voyager_1",
+  SourceNodeName = voyager1.Voyager_1.Identifier,
   DestinationType = "Node",
-  DestinationNodeName = "Earth",
+  DestinationNodeName = earth.Earth.Identifier,
   Enabled = asset.enabled
 }
 
@@ -14,9 +19,9 @@ local DistanceVoyager2 = {
   Identifier = "Voyager2Distance",
   GuiName = "Voyager 2 - Earth Distance",
   SourceType = "Node",
-  SourceNodeName = "Voyager_2",
+  SourceNodeName = voyager2.Voyager_2.Identifier,
   DestinationType = "Node",
-  DestinationNodeName = "Earth",
+  DestinationNodeName = earth.Earth.Identifier,
   Enabled = asset.enabled
 }
 

data/assets/scene/solarsystem/missions/voyager/voyager1.asset

@@ -1,5 +1,6 @@
 local sun = asset.require("scene/solarsystem/sun/sun")
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -49,7 +50,7 @@ local Voyager1 = {
     Rotation = {
       Type = "SpiceRotation",
       SourceFrame = "VG1_SC_BUS",
-      DestinationFrame = "GALACTIC",
+      DestinationFrame = coreKernels.Frame.Galactic,
       TimeFrame = {
         Type = "TimeFrameInterval",
         Start = "1977-SEP-05 14:10:11.786",
@@ -124,7 +125,7 @@ local VoyagerTrailCruiseEarthJupiter = {
     Translation = {
       Type = "SpiceTranslation",
       Target = "VOYAGER 1",
-      Observer = "SSB"
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.70, 0.50, 0.20 },
     StartTime = "1977 SEP 05",
@@ -148,7 +149,7 @@ local VoyagerTrailEncounterJupiter = {
     Translation = {
       Type = "SpiceTranslation",
       Target = "VOYAGER 1",
-      Observer = "SSB"
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.70, 0.50, 0.20 },
     EnableFade = false,
@@ -173,7 +174,7 @@ local VoyagerTrailCruiseJupiterSaturn = {
     Translation = {
       Type = "SpiceTranslation",
       Target = "VOYAGER 1",
-      Observer = "SSB"
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     EnableFade = false,
     Color = { 0.70, 0.50, 0.20 },
@@ -198,7 +199,7 @@ local VoyagerTrailEncounterSaturn = {
     Translation = {
       Type = "SpiceTranslation",
       Target = "VOYAGER 1",
-      Observer = "SSB"
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     EnableFade = false,
     Color = { 0.70, 0.50, 0.20 },
@@ -223,7 +224,7 @@ local VoyagerTrailCruiseSaturnInf = {
     Translation = {
       Type = "SpiceTranslation",
       Target = "VOYAGER 1",
-      Observer = "SSB"
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     EnableFade = false,
     Color = { 0.70, 0.50, 0.20 },

data/assets/scene/solarsystem/planets/earth/eclipse_shadow.asset

@@ -1,4 +1,5 @@
 local transforms = asset.require("scene/solarsystem/planets/earth/moon/moon")
+local coreKernels = asset.require("spice/core")
 
 local EarthMoonShadow = {
   Identifier = "EarthMoonShadow",
@@ -9,11 +10,11 @@ local EarthMoonShadow = {
     ShadowLength = 1.0,
     UmbralShadowColor = { 0.85, 1.0, 1.0, 0.20 },
     PenumbralShadowColor = { 0.35, 0.35, 0.35, 0.29 },
-    LightSource = "SUN",
-    LightSourceFrame = "IAU_SUN",
-    Shadower = "MOON",
-    ShadowerFrame = "IAU_MOON",
-    Shadowee = "EARTH"
+    LightSource = coreKernels.ID.Sun,
+    LightSourceFrame = coreKernels.Frame.Sun,
+    Shadower = coreKernels.ID.Moon,
+    ShadowerFrame = coreKernels.Frame.Moon,
+    Shadowee = coreKernels.ID.Earth
   },
   GUI = {
     Name = "Earth/Moon Shadow",

data/assets/scene/solarsystem/planets/earth/grids.asset

@@ -1,4 +1,5 @@
 local transforms = asset.require("./transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -20,8 +21,8 @@ local plane1lsec = {
     },
     Translation = {
       Type = "SpiceTranslation",
-      Target = "EARTH BARYCENTER",
-      Observer = "SSB"
+      Target = coreKernels.ID.EarthBarycenter,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   Renderable = {
@@ -48,8 +49,8 @@ local plane1lmin = {
     },
     Translation = {
       Type = "SpiceTranslation",
-      Target = "EARTH BARYCENTER",
-      Observer = "SSB"
+      Target = coreKernels.ID.EarthBarycenter,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   Renderable = {

data/assets/scene/solarsystem/planets/earth/lagrange_points/l1.asset

@@ -1,5 +1,5 @@
-asset.require("spice/base")
 local transforms = asset.require("scene/solarsystem/sun/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -18,7 +18,9 @@ local kernels = asset.resource({
 })
 
 
-local L1 = 391
+local ID = {
+  L1 = 391
+}
 
 local L1Position = {
   Identifier = "L1Position",
@@ -26,8 +28,8 @@ local L1Position = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = L1,
-      Observer = "SSB"
+      Target = ID.L1,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   Tag = { "lagrange_points_earth" , "lagrange_points_earth_l1" },
@@ -93,6 +95,7 @@ asset.onDeinitialize(function()
   openspace.spice.unloadKernel(kernels .. "L1_de431.bsp")
 end)
 
+asset.export("ID", ID)
 asset.export(L1Position)
 asset.export(L1)
 asset.export(L1Label)

data/assets/scene/solarsystem/planets/earth/lagrange_points/l2.asset

@@ -1,6 +1,6 @@
-asset.require("scene/solarsystem/sun/sun")
-asset.require("spice/base")
+local sun = asset.require("scene/solarsystem/sun/sun")
 local transforms = asset.require("scene/solarsystem/sun/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -19,7 +19,13 @@ local kernels = asset.resource({
 })
 
 
-local L2 = 392
+local ID = {
+  L2 = 392
+}
+
+local Frame = {
+  L2Corevolving = "L2_COREV"
+}
 
 local L2Position = {
   Identifier = "L2Position",
@@ -27,8 +33,8 @@ local L2Position = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = L2,
-      Observer = "SSB"
+      Target = ID.L2,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   Tag = { "lagrange_points_earth", "lagrange_points_earth_l2" },
@@ -47,8 +53,8 @@ local L2CoRevFrame = {
   Transform = {
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "L2_COREV",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = Frame.L2Corevolving,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Tag = { "lagrange_points_earth", "lagrange_points_earth_l2" },
@@ -140,8 +146,8 @@ local L2SunLine = {
   Parent = transforms.SolarSystemBarycenter.Identifier,
   Renderable = {
     Type = "RenderableNodeLine",
-    StartNode = "Sun",
-    EndNode = "L2Small",
+    StartNode = sun.Sun.Identifier,
+    EndNode = L2Small.Identifier,
     Color = { 0.5, 0.5, 0.5 },
     LineWidth = 2
   },
@@ -179,6 +185,8 @@ asset.onDeinitialize(function()
   openspace.spice.unloadKernel(kernels .. "L2_de431.bsp")
 end)
 
+asset.export("ID", ID)
+asset.export("Frame", Frame)
 asset.export(L2Position)
 asset.export(L2CoRevFrame)
 asset.export(L2Small)

data/assets/scene/solarsystem/planets/earth/lagrange_points/l4.asset

@@ -1,5 +1,5 @@
-asset.require("spice/base")
 local transforms = asset.require("scene/solarsystem/sun/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -18,7 +18,9 @@ local kernels = asset.resource({
 })
 
 
-local L4 = 394
+local ID = {
+  L4 = 394
+}
 
 local L4Position = {
   Identifier = "L4Position",
@@ -26,8 +28,8 @@ local L4Position = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = L4,
-      Observer = "SSB"
+      Target = ID.L4,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   Tag = { "lagrange_points_earth", "lagrange_points_earth_l4" },
@@ -77,6 +79,7 @@ local L4Label = {
 }
 
 
+
 asset.onInitialize(function()
   openspace.spice.loadKernel(kernels .. "L4_de431.bsp")
 
@@ -93,6 +96,7 @@ asset.onDeinitialize(function()
   openspace.spice.unloadKernel(kernels .. "L4_de431.bsp")
 end)
 
+asset.export("ID", ID)
 asset.export(L4Position)
 asset.export(L4)
 asset.export(L4Label)

data/assets/scene/solarsystem/planets/earth/lagrange_points/l5.asset

@@ -1,5 +1,5 @@
-asset.require("spice/base")
 local transforms = asset.require("scene/solarsystem/sun/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -18,7 +18,9 @@ local kernels = asset.resource({
 })
 
 
-local L5 = 395
+local ID = {
+  L5 = 395
+}
 
 local L5Position = {
   Identifier = "L5Position",
@@ -26,8 +28,8 @@ local L5Position = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = L5,
-      Observer = "SSB"
+      Target = ID.L5,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   Tag = { "lagrange_points_earth", "lagrange_points_earth_l5" },
@@ -77,6 +79,7 @@ local L5Label = {
 }
 
 
+
 asset.onInitialize(function()
   openspace.spice.loadKernel(kernels .. "L5_de431.bsp")
 
@@ -93,6 +96,7 @@ asset.onDeinitialize(function()
   openspace.spice.unloadKernel(kernels .. "L5_de431.bsp")
 end)
 
+asset.export("ID", ID)
 asset.export(L5Position)
 asset.export(L5)
 asset.export(L5Label)

data/assets/scene/solarsystem/planets/earth/magnetosphere/transforms_magnetosphere.asset

@@ -1,18 +1,22 @@
 local transforms = asset.require("scene/solarsystem/planets/earth/transforms")
-asset.require("spice/base")
+local coreKernels = asset.require("spice/core")
 
 
 
 local GSMKernel = asset.resource("../kernels/GSM.ti")
 
+local Frame = {
+  GSM = "GSM" -- Geocentric Solar Magnetospheric
+}
+
 local GSMReferenceFrame = {
   Identifier = "GSMReferenceFrame",
   Parent = transforms.EarthCenter.Identifier,
   Transform = {
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "GSM", -- Geocentric Solar Magnetospheric
-      DestinationFrame = "GALACTIC"
+      SourceFrame = Frame.GSM,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   GUI = {
@@ -35,6 +39,7 @@ asset.onDeinitialize(function()
   openspace.spice.unloadKernel(GSMKernel)
 end)
 
+asset.export("Frame", Frame)
 asset.export(GSMReferenceFrame)
 
 

data/assets/scene/solarsystem/planets/earth/moon/moon.asset

@@ -1,7 +1,7 @@
-asset.require("spice/base")
 local transforms = asset.require("scene/solarsystem/planets/earth/transforms")
 local sunAsset = asset.require("scene/solarsystem/sun/sun")
 local earthAsset = asset.require("../earth")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -19,13 +19,13 @@ local Moon = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "MOON",
-      Observer = "EARTH BARYCENTER"
+      Target = coreKernels.ID.Moon,
+      Observer = coreKernels.ID.EarthBarycenter
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "IAU_MOON",
-      DestinationFrame = "GALACTIC"
+      SourceFrame = coreKernels.Frame.Moon,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   Renderable = {

data/assets/scene/solarsystem/planets/earth/moon/trail.asset

@@ -1,5 +1,5 @@
-asset.require("spice/base")
 local transforms = asset.require("../transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -10,8 +10,8 @@ local MoonTrail = {
     Type = "RenderableTrailOrbit",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "MOON",
-      Observer = "EARTH BARYCENTER"
+      Target = coreKernels.ID.Moon,
+      Observer = coreKernels.ID.EarthBarycenter
     },
     Color = { 0.5, 0.3, 0.3 },
     Period = 27,
@@ -40,8 +40,7 @@ asset.export(MoonTrail)
 asset.meta = {
   Name = "Moon Trail",
   Version = "1.1",
-  Description = [[Moon Trail - This asset contains the trail of the Moon. Data from NASA
-    Spice (see base spice asset)]],
+  Description = "Moon Trail - This asset contains the trail of the Moon",
   Author = "OpenSpace Team",
   URL = "http://openspaceproject.com",
   License = "MIT license"

data/assets/scene/solarsystem/planets/earth/satellites/misc/hubble_trail.asset

@@ -1,4 +1,5 @@
 local transforms = asset.require("scene/solarsystem/planets/earth/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -24,8 +25,8 @@ local HubblePosition = {
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "GALACTIC",
-      DestinationFrame = "J2000"
+      SourceFrame = coreKernels.Frame.Galactic,
+      DestinationFrame = coreKernels.Frame.J2000
     }
   },
   Tag = { "earth_satellite", "hubble" },

data/assets/scene/solarsystem/planets/earth/satellites/misc/iss.asset

@@ -1,5 +1,6 @@
 local transforms = asset.require("scene/solarsystem/planets/earth/transforms")
 local sun = asset.require("scene/solarsystem/sun/sun")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -33,8 +34,8 @@ local IssPosition = {
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "GALACTIC",
-      DestinationFrame = "J2000"
+      SourceFrame = coreKernels.Frame.Galactic,
+      DestinationFrame = coreKernels.Frame.J2000
     }
   },
   Tag = { "earth_satellite", "ISS" },

data/assets/scene/solarsystem/planets/earth/satellites/weather/aqua.asset

@@ -1,4 +1,5 @@
 local transforms = asset.require("scene/solarsystem/planets/earth/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -25,8 +26,8 @@ local Aqua = {
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "GALACTIC",
-      DestinationFrame = "J2000"
+      SourceFrame = coreKernels.Frame.Galactic,
+      DestinationFrame = coreKernels.Frame.J2000
     }
   },
   Tag = { "earth_satellite", "Aqua" },

data/assets/scene/solarsystem/planets/earth/satellites/weather/snpp.asset

@@ -1,4 +1,5 @@
 local transforms = asset.require("scene/solarsystem/planets/earth/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -25,8 +26,8 @@ local SNPP = {
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "GALACTIC",
-      DestinationFrame = "J2000"
+      SourceFrame = coreKernels.Frame.Galactic,
+      DestinationFrame = coreKernels.Frame.J2000
     }
   },
   Tag = { "earth_satellite", "SNPP" },

data/assets/scene/solarsystem/planets/earth/satellites/weather/terra.asset

@@ -1,4 +1,5 @@
 local transforms = asset.require("scene/solarsystem/planets/earth/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -25,8 +26,8 @@ local Terra = {
     },
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "GALACTIC",
-      DestinationFrame = "J2000"
+      SourceFrame = coreKernels.Frame.Galactic,
+      DestinationFrame = coreKernels.Frame.J2000
     }
   },
   Tag = { "earth_satellite", "Terra" },

data/assets/scene/solarsystem/planets/earth/trail.asset

@@ -1,5 +1,5 @@
-asset.require("spice/base")
 local transforms = asset.require("scene/solarsystem/sun/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -10,8 +10,8 @@ local EarthTrail = {
     Type = "RenderableTrailOrbit",
     Translation = {
       Type = "SpiceTranslation",
-      Target = "EARTH",
-      Observer = "SSB"
+      Target = coreKernels.ID.Earth,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.5, 0.8, 1.0 },
     Period = 365.242,
@@ -40,8 +40,7 @@ asset.export(EarthTrail)
 asset.meta = {
   Name = "Earth Trail",
   Version = "1.1",
-  Description = [[Trail of Earth as observed by the Sun. Data from NASA Spice (see base
-    spice asset)]],
+  Description = "Trail of Earth as observed by the Sun",
   Author = "OpenSpace Team",
   URL = "http://openspaceproject.com",
   License = "MIT license"

data/assets/scene/solarsystem/planets/earth/trail_barycenter.asset

@@ -1,5 +1,5 @@
-asset.require("spice/base")
 local transforms = asset.require("scene/solarsystem/sun/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -11,8 +11,8 @@ local EarthBarycenterTrail = {
     Enabled = false,
     Translation = {
       Type = "SpiceTranslation",
-      Target = "EARTH BARYCENTER",
-      Observer = "SSB"
+      Target = coreKernels.ID.EarthBarycenter,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     },
     Color = { 0.5, 0.8, 1.0 },
     Period = 365.242,
@@ -41,8 +41,7 @@ asset.export(EarthBarycenterTrail)
 asset.meta = {
   Name = "Earth Trail",
   Version = "1.1",
-  Description = [[Trail of Earth's Barycenter as observed by the Sun. Data from NASA Spice
-    (see base spice asset)]],
+  Description = "Trail of Earth's Barycenter as observed by the Sun",
   Author = "OpenSpace Team",
   URL = "http://openspaceproject.com",
   License = "MIT license"

data/assets/scene/solarsystem/planets/earth/transforms.asset

@@ -1,5 +1,5 @@
-asset.require("spice/base")
 local transforms = asset.require("scene/solarsystem/sun/transforms")
+local coreKernels = asset.require("spice/core")
 
 
 
@@ -9,8 +9,8 @@ local EarthBarycenter = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "EARTH BARYCENTER",
-      Observer = "SSB"
+      Target = coreKernels.ID.EarthBarycenter,
+      Observer = coreKernels.ID.SolarSystemBarycenter
     }
   },
   GUI = {
@@ -26,8 +26,8 @@ local EarthCenter = {
   Transform = {
     Translation = {
       Type = "SpiceTranslation",
-      Target = "EARTH",
-      Observer = "EARTH BARYCENTER"
+      Target = coreKernels.ID.Earth,
+      Observer = coreKernels.ID.EarthBarycenter
     }
   },
   GUI = {
@@ -44,8 +44,8 @@ local EarthInertial = {
   Transform = {
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "J2000",
-      DestinationFrame = "GALACTIC",
+      SourceFrame = coreKernels.Frame.J2000,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   GUI = {
@@ -61,8 +61,8 @@ local EarthIAU = {
   Transform = {
     Rotation = {
       Type = "SpiceRotation",
-      SourceFrame = "IAU_EARTH",
-      DestinationFrame = "GALACTIC",
+      SourceFrame = coreKernels.Frame.Earth,
+      DestinationFrame = coreKernels.Frame.Galactic
     }
   },
   GUI = {