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 GStar video camera user group
The Atik camera forum
The Astro Photography Tool website