Hi Kendrix,
Thanks for this beautifull mods. Now I can not unterstand why the high polygon rings not standard in Celestia. Only peformance reasons... , Chris ? Maybe a little switch at the render menu convince Chris to include this feature to base Celestia.
Another point is the shadow texture. Saturn's shadow looks with 1k still pixelated around the edges. I don't think this can be solved only with a large texture. I suggest a to use a gray scaled texture which can smooth this edges. Kendrix is it possible to say Celestia to load the shadow texture from the medres folder?
Have you enabled LUA in your 'exe' (not tested so far) ?
Bye Jens