Great little adapter for my Celestron telescope and a great price to boot, not to mention fast delivery, I hit enter on the keyboard and my door bell rang with my order :) I have a 1980 C8 Celestron telescope with a 2000mm telephoto and until now I was only viewing objects, now I can photograph them as well with my Canon Rebel XT. I just tried the adapter out and photographed a bird at about 500 feet, wow it was like standing next to the bird. Next clear night and I will try it out on a few planets (Jupiter, Mars and Venus are visible) and the moon.