Celestron NexStar+ AZ USB Hand ControlThe Celestron NexStar+ AZ Hand Control is the standard computer accessory on all current altazimuth mounted Celestron go to telescopes: SLT, LCM, SE, NexStar Evolution, and CPC, and CPC Deluxe 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.