Amazon carries just about all the telescopes from all the major manufacturers from Celestron to Meade and more. And by shopping around a bit you can find some real bargains. Here is a list of the best selling catadioptric telescopes according to the official numbers. A catadioptric telescope is the kind of scope that has a combination of mirror and lens. These kinds of telescopes are typically very well made and perform superbly. They combine good light gathering power with small size - so, powerful and portable. Because of the compound mirror/lens assembly they do cost more than standard reflectors and refractors.