Celestron SCT/EdgeHD Focus Motor

Technical Details

Celestron Focus Motor for SCT/EDGE HD The Focus Motor, compatible with Celestron Schmidt-Cassegrain (SCT), EdgeHD, and RASA telescope optical tubes, offers electronic focusing.

Once installed, the motor allows for precise, sharp focusing of celestial objects via your telescope's hand controller or computer, eliminating the need for manual adjustment with the focuser knob.

This is particularly beneficial for visual observers seeking exact focus, especially those with dexterity challenges, and is an essential accessory for astroimagers.

The motorised focuser negates the necessity for the astroimager to be physically close to the telescope to focus an image. In conjunction with computerised control of the mount and camera, the focus motor facilitates remote data collection from a backyard observatory, or even a telescope located hundreds of miles away.

An added advantage is the inclusion of port covers, which protect the ports when not in use. The tethered design ensures these covers cannot be misplaced.

Key Features

• Electronic focusing
• Control via hand controller or computer
• Eliminates need for manual adjustment
• Facilitates remote data collection
• Inclusion of port covers

Compatible Optical Tubes

The focus motor is compatible with all SCTs from 15.24cm to 35.56cm in aperture that have been produced since the year 2006. It is not compatible with 12.7cm SCTs or older models.

It is compatible with the 20.32cm Rowe-Ackermann Schmidt Astrograph (RASA), the 36cm RASA, the 17.78cm Maksutov-Cassegrain, and all the EdgeHD optical tubes. The RASA 11 (91075) is compatible with the #94155-A focus motor, but requires the Focuser Retrofit Kit for RASA 11. The RASA 11 V2 (91076) is compatible with the #94155-A without a retrofit kit needed.

For 15.24cm Schmidt-Cassegrain telescopes only, the Off-Axis Guider (#93648) cannot be used when the focus motor is installed due to mechanical interferences.

Power Options

There are three options for powering your Celestron Focus Motor:

• When using a Celestron computerised mount, you can power and control the focus motor through the mount using the supplied AUX cable. This allows control from the mount's hand controller (NexStar+ or StarSense) or a computer.
• If you are not using a Celestron mount, you can power and control the focus motor from a computer USB port. You will need a user supplied USB A-to-B cable.
• You may also opt to use an external 12V DC power source which plugs into the motor's power jack.

Compatible Software

Celestron offers a free Focuser Utility programme 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.