Orion 07960 GPS Kit for EQ-G GoTo Telescope Mounts (Black) Plug-in device automatically supplies GPS location and time data to your Orion Sky Quest XTg or XXg Dobsonian, Sirius EQ-G mount, Atlas EQ-G mount, Atlas Pro AZ/EQ-G mount, or Sky View Pro GoTo Mount A vital time-saver for intermediate and advanced amateur astronomers who visit different locations for observing and astrophotography Reduces the amount of time spent entering information required for alignment of computerized telescope mounts Supplies both geographical location data and time data retrieved directly from GPS satellites Requires Orion GoTo Hand Controller with firmware version 3.32 or later