The Celestron SkySync GPS Accessory lets you add GPS to your Celestron computerized telescope so you can get time, date, and location downloads from orbiting Global Positioning Satellites. This 16-channel GPS module plugs into your telescope’s hand control or the auxiliary (AUX) port on your drive base and then mounts to a tripod leg to stay safely out of the way with included straps. Features – Upgrade your Celestron computerized telescope to GPS with SkySync. – Improve the speed and accuracy of alignments with 16-channel GPS. – Automatically updates the time and date. – Plugs into the AUX port on the base of the telescope – Compatible for all non-GPS Celestron computerized telescopes. * Not compatible with the SkyProdigy range.