Celestron CGEM II 800 RASA TelescopeCapture spectacular wide field deep sky images in seconds with Celestron CGEM II 800 RASA Telescope. This incredibly fast f 2. 0 system is the perfect companion to todays color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras. Thanks to its fast focal ratio and patented optical design, you can produce sharp, detailed images and, in many cases, skip the autoguider completely. Weighing in at just 17 pounds, its easy to transport