Amazon.com : Celestron - SkySync Telescope GPS Accessory – Automatically Updates your Telescope with 16-channel GPS Data, Time, and Date - Save Time & Improve the Accuracy of your Telescope Alignment, Black (
SmartStar-R80 Computer Telescope with GPS- Pink
Celestron 11 Inch CPC Schmidt-Cassegrain Telescope - 11075-XLT - Telescopes at Telescopes