Hi, I dont have much experience with amateur astronomy, but I was going to try and take a few shots with my Canon EOS 20d mounted on my 6" Ritchey-Chretien astrograph this Monday. The telescope was manufactured by Orion, and was a few hundred dollars so probably not the highest quality. Since I'm a teacher, I'm planning to have it setup for most of the occultation's 3 hours for students to check out. My concern is heat. Should I worry about adhesives on the optics? What about the CCD in my DSLR? I'm really in the dark about solar observing with a telescope. I do not want to damage my scope. My only filter is a single layer of mylar. edit: Extra question, I will have to unmount my telrad because that specifically had a warning against solar observing. Recommendations for a simple replacement for easy centering? Its just an alt/az mount without tracking or autoguiding, etc.