And that renderer you are so proud of. Does it do all its calculations of space in 64 bit floating point or even higher precision? Most renderers, with a few notable exceptions, do the majority of their work using single precision floating point which may be adequate for a giant robot or two, but falls apart in the vast distances of space.
These are just the first of the issues you must address for a proper starfield.
Fools may go where wise people fear to tread.