Celestron GPS - CN16 Accessory Kit for Advanced Series GT Computerized Telescopes

Use the Power and Accuracy of GPS Satellites to Align Your Telescope with the Optional CN-16 GPS Accessory. Plug in the GPS receiver module into your telescope's drive base port to link up and automatically download information from one of many global positioning satellites. Controlled with the NexStar computerized hand control, the CN-16 will greatly improve the accuracy of your star alignments by locating north and leveling the optical tube with more precision than can be done by hand.