Discussion forum for Celestia developers; topics may only be started by members of the developers group, but anyone can post replies.
Gifs, to show the 3D models while the observer is moving in them ? I don't have the tools to make animated gifs on my old Mac, and they would be pretty big files anyway.
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"