Is the black bands around the edges distracting? I don't know if it works or not, If you crop and resize the image, it loses some of it's impact, so I decided to stick to the original on a black background.
Wow, that really is beautiful... as blue as the waters around a tropical island... magnificent. Fancy giving it such a dull name, "I have travelled 20,000 light years to Earth, from... ahem... the dumbbell nebula"...
Personally, I prefer to leave the image in its original resolution; that way each user can choose whether to display it stretched or with a filled-in background. I don't suppose Caedes supports odd resolutions like that, though, so I guess I'd go with the black background, too.