Dear group, Thanks for all for the many informed comments on the Canon camera series. That was just what I was looking for; what a wonderful resource you guys are. Looks like buying a used XSi off the KSL classifieds is the way to go. I'll probably also be buying one of those digital shutter controls, so when doing wide-field sky time lapse photography, I do not also have to haul out laptop. Does anyone know if Inkleys or Pictureline sells the T-ring adapter for the camera body locally, or should I go ahead and order it off of Scopestuff.com ? Thanks again - Kurt P.S. - Patrick - Yes, may I borrow the ST-6 for a few weeks. I have a several uncooled astro cameras and, even with the ST-6's old serial port, it would be nice to add a cooled camera. Let me know what would work for a hand-off time. I am on the UofU campus during the week, so maybe a hand-off after one of your physics classes would be the best method.