Celestron Single Axis Motor Drive with Hand Controller for CG-3 Mounts and Firstscope 114 EQ, 80 EQ Telescopes.

Allows telescopes to track the motion of the sky once the telescope is polar aligned. These models are single axis (R.A.), DC motor drives. They are powered by four D-cell batteries (user supplied). 2x and 4x sidereal speeds are available through the included hand controller.