Theres barely ANY flickering in Solid colors, this is Very little Disturbance around 0.02 and almost no Normal.
Subsampled to 0.5 and detail at 0.5 even the baked 512 resolution is perfect.
0.02 disturbance 0 normal It looks VERY cartoony but, If I alter the system behind the Colors i could pretty easily produce a Fairly realistic Galaxy, only problem is Clusters, a Galaxy cluster needs a variety of colors to look cool.
Some better colors i can almost get away with this, just still to many colors though, Is it possible you could alter the color system to be a gradient instead of Hue?
As for Star position, I am Scaling it by FocusObject.Scale Which seams to be giving a pretty accurate Position, just one problem. The star position is offset by a bit And the offset changes when i move, so i cant actually get to the star as its constantly moving somewhere else though it is very close to where it should be.