Focus Motor for Celestron SCT/Edge HD Tubes

The Celestron Focus Motor (Model 94155) is a high-precision stepper motor designed for Celestron SCT and EdgeHD optical tubes, as well as RASA telescopes. It attaches directly to the existing focuser knob shaft, enabling automated focusing via USB or AUX port control. With a 0.08 micron step size and built-in temperature sensor, this motor delivers exceptional focus accuracy for astrophotography and visual observation.

Advantages

Tool-free installation after initial bracket setup, variable speed settings (fine and coarse), and backlash compensation ensure smooth, precise focusing. Compatible with Celestron CPWI and ASCOM software, it integrates seamlessly with your existing setup.

Suitable for

• Celestron SCT and EdgeHD optical tubes (5", 6", 8", 9.25", 11", 14")
• RASA 8, RASA 11, and RASA 36 (with adapter)
• Astrophotographers and visual observers seeking automated focusing

Key specifications

• Motor Type: Stepper Motor
• Control Interface: USB 2.0, AUX Port (Celestron Mount)
• Software Compatibility: Celestron CPWI, ASCOM
• Power Source: 12V DC (via AUX port), 5V DC (via USB)
• Focus Precision: 0.08 micron step size
• Speed Settings: Variable (Fine, Coarse)
• Backlash Compensation: Yes
• Temperature Sensor: Built-in
• Housing Material: Aluminum
• Installation: Tool-free (after initial bracket setup)
• Included Accessories: Focus Motor, Mounting Bracket, Hardware, USB Cable, AUX Cable
• Hand Controller Compatibility: NexStar+ Hand Controller, StarSense Hand Controller
• Firmware Upgradable: Yes (via Celestron Firmware Manager)

Recommendations

For optimal performance, use with a Celestron mount and CPWI software. Ensure firmware is updated to the latest version. This motor is an essential upgrade for serious astrophotographers.