Try with different volume rendering values for the data

data/assets/mas.scene

@@ -31,6 +31,12 @@ local Keybindings = {
         Command = "openspace.time.setTime('2017 AUG 21 17:00:00');",
         Documentation = "Set time to when eclipse data starts",
         Local = false
+    },
+    {
+        Key = "F9",
+        Command = "openspace.setPropertyValueSingle('Scene.SunGlare.renderable.Enabled', false);",
+        Documentation = "Turn off sun glare",
+        Local = false
     }
 }
 

data/assets/scene/solarsystem/model/mas/mas.asset

@@ -11,20 +11,20 @@ local Mas = {
             Type = "RenderableTimeVaryingVolume",
             -- Type = "RenderableKameleonVolume",
             Dimensions = {100, 100, 128},
-            StepSize = 0.0001,
+            StepSize = 0.000001,
             TransferFunction = "${DATA}/mas/mas_transfer_function.tf",
             -- SourcePath = "${DATA}/mas/mas_merged_step_101.cdf",
             SourceDirectory = "${DATA}/mas/raw",
-            LowerValueBound = 0.01,
-            UpperValueBound = 2.0,
-            MinValue = 0.001,
-            MaxValue = 55000.0,
+            LowerValueBound = 0.000001,
+            UpperValueBound = 0.1,
+            MinValue = 0.000001,
+            MaxValue = 0.1,
             GridType = "Spherical",
             SecondsBefore = 24*60*60,
             SecondsAfter = 24*60*60,
-            Time = "2012-07-01T00:00:00.001",
-            VisUnit = "amu/cm^3",
-            -- VisUnit = "rho",
+            Time = "2017-08-01T17:00:00.001",
+            -- VisUnit = "amu/cm^3",
+            VisUnit = "rho",
         },
         Transform = {
             Translation = {

data/mas/mas_transfer_function.tf

@@ -1,9 +1,15 @@
 width 5
 lower 0.0
 upper 1.0
+mappingkey 0.000001 250 0 0     0
+mappingkey 0.000015 250 0 0     20
+mappingkey 0.00025 250 20 0    20
+mappingkey 0.004 250 0 0     0
+mappingkey 0.06 250 0 0     0
+
 mappingkey 0.15 250 0 0     0
 mappingkey 0.20 250 0 0     20
 mappingkey 0.35 250 20 0    20
 mappingkey 0.40 250 0 0     0
 mappingkey 0.60 250 0 0     0
-mappingkey 0.80 0 0 200     255
+mappingkey 0.80 0 0 200     255