I have the entire Space section from Second Nature.
But since I bought a PC with XP and use the real pictures for the screensaver, I abandoned that Space art software.
So many pictures taken by Cassini are much more bizarre than anything artists could have imagined.
Another thing: it is very tempting for artists to draw or paint landscapes with objects that cannot be seen together because their brilliance is far too different! A brilliant crescent planet with very faint globular clusters shouldn't be together in the same landscape.
Artistic licence? Ok, but aren't they trying to be as realistic as possible?