Celestron Omni XLT 150 on Open Astro Mount. Open Astro Mount (OAM) is a open source hardware mount capable of handling telescopes, camera and gear much larger than the OAT. It runs the same firmware as the OAT. The telescope here is a Celestron Omni XLT 150. It is a reflector with a150mm (~6 in) diameter mirror and 750mm of focal length.
