Parameter tuning for RenderableStars

shaders/modules/stars/star_fs.glsl

@@ -73,7 +73,7 @@ void main() {
 
 	// These can be removed once we get a better star psf texture ---abock
 	vec4 textureColor = texture(psfTexture, texCoord);
-	textureColor.a = (textureColor.a - 0.25) / (0.75);
+	textureColor.a = (textureColor.a - 0.25) / (0.85);
 
 	vec4 fullColor =  textureColor * color;
 	if (fullColor.a <= 0.125)

shaders/modules/stars/star_ge.glsl

@@ -68,7 +68,7 @@ void main() {
     float M  = vs_brightness[0].z;
 
     M = clamp(M, 1.0, 5.0);
-    float modifiedSpriteSize = exp((-18 - M) * 0.871) * 200000 ;
+    float modifiedSpriteSize = exp((-5 - M) * 0.871);
 
     for(int i = 0; i < 4; i++){
         vec4 p1     = gl_in[0].gl_Position;