Add this motorized drive to your AstroMaster or PowerSeeker telescope (Celestron CG-2 or CG-3 mount) and get ready to explore the stars! This easy-to-install motorized control device compensates for the Earth’s rotation, allowing your telescope to track celestial objects as they move from east to west. Once the RA drive is set up and powered on, all you need to do is make a few minor adjustments, and you can follow the same target for an extended period of time.