An Aladdin's cave of astro-goodies backed up by incredibly good service. Owned by Steve Massey - co-author of Deep-Sky Video Astronomy among many other publications.
Steve Quirk's website containing many astro-images including excellent mosaics using the GStar video camera. Steve is the other co-author of Deep-Sky Video Astronomy and other publications (what the two Steves don't know about video imaging just isn't worth knowing).
The Atik camera forum
The Astro Photography Tool website