Celestron 94155 A Focus Motor For Schmidt Cassegrain, EdgeHD and RASA Telescopes Enables Electronic Focusing, Bringing Celestial Objects into Sharp Focus, Black

ELECTRONIC FOCUSING: The Celestron focus motor helps bring celestial objects into sharp, precise focus using a computer or hand controller for remote/hands-free observing. SELF-POWERING: When connected to a Celestron Computerized mount, the mount provides the power. When connected directly to a computer, USB provides the power. COMPATIBILITY: Works with a wide variety of Celestron Schmidt-Cassegrain, EdgeHD and Rowe-Ackermann Schmidt Astrograph optical tubes. MOTOR CONTROLS: Multiple speed rates, focuser backlash compensation and automatic GoTo indexed Focuser position that allows the motor to automatically return to a previous focus position. SOFTWARE: Celestron offers a free Focuser Utility program for computer control. The Celestron PWI software can also control the focus motor. To use third-party focuser control software, an ASCOM driver is needed.