The Skywatcher Single Axis RA Motor for EQ5 Mount allows the telescope to track and follow celestial objects in the night sky. It comes with an RA motor that will easily fit into your telescope mount. The automatic tracking function of this motor will lessen the potential problems encountered when tracking an object manually. It can also switch tracking modes from North to South Hemisphere. Fine tuning and calibration are possible with a built in adjuster and the 9v PP3 battery lasts for up to 40 hours of operation.