Celestron StarSense Hand Control USBThe Celestron StarSense Hand Control USB Hand Control is compatible with the StarSense AutoAlign accessory for use with Celestron computerized telescopes Massive Database With the push of a button, you can access NexStar+s huge database of over 40,000 celestial objects. Automatically slew to objects in a variety of catalogs, including the Messier, NGC, Caldwell, and SAO brightest stars. Features NexStar+ Hand Control has a dual line, 16 character LCD