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 (
Company Seven | Celestron Nextar 11 GPS Telescope Description Page
Used Celestron NexStar GPS 11
Used Celestron Nexstar GPS 8
Celestron NexStar SLT 90 | 90 mm Maksutov-Cassegrain on SLT GoTo Mount