The Focus Motor provides electronic focusing for Celestron Schmidt-Cassegrain (SCT), EdgeHD, and RASA telescope optical tubes. With the focus motor installed, you can bring celestial objects into sharp, precise focus using your telescope’s hand controller or a computer instead of using the focuser knob. A focus motor is great for visual observers who want to dial in exact focus (especially those with dexterity issues) and a must-have accessory for astroimagers. With a motorized focuser installed, an astroimager no longer needs to be physically near the telescope to focus an image. Combined with computerized control of the mount and camera, the focus motor enables the imager to gather data remotely from a backyard observatory, or even a telescope located hundreds of miles away. As an added bonus, port covers protect the ports while not in use, and the covers cannot be lost due to the tethered design.
Compatible Optical Tubes
The focus motor is compatible with all SCTs from 6” to 14” in aperture that have been produced since the year 2006. It is not compatible with 5” SCTs or older models. It is compatible with the 8” Rowe-Ackermann Schmidt Astrograph (RASA), the 36cm RASA, the 7” Maksutov-Cassegrain, and all the EdgeHD optical tubes. It can also be used with the 11” RASA, but requires the Focuser Retrofit Kit for RASA 11.
For 6” Schmidt-Cassegrain telescopes only, the Off-Axis Guider (#93648) cannot be used when the focus motor is installed due to mechanical interferences.
|#94155 Focus MotorCompatible with|
|Aperture||Celestron Telescope Design||Models|
|8”||Schmidt-Cassegrain||Built before 2006||No|
|8”||Schmidt-Cassegrain||Built 2006 or later||Yes|
|8”||Rowe-Ackermann Schmidt Astrograph||All||Yes|
|9.25”||Schmidt-Cassegrain||Built before 2006||No|
|9.25”||Schmidt-Cassegrain||Built 2006 or later||Yes|
|11”||Schmidt-Cassegrain||Built before 2006||No|
|11”||Schmidt-Cassegrain||Built 2006 or later||Yes|
|11”||Rowe-Ackermann Schmidt Astrograph||All||Yes***|
|14”||Schmidt-Cassegrain||Built before 2006||No|
|14”||Schmidt-Cassegrain||Built 2006 or later||Yes|
|36cm||Rowe-Ackermann Schmidt Astrograph||All||Yes|
|Not compatible with #93648 Off-Axis Guider|
|not compatible with #93519 2" Mirror Diagonal|
|Currently not compatible due to mechanical interferences|
|Requires #94255 Focuser Retrofit Kit|