Celestron Focus Motor for SCT and EdgeHD (94155-A)
$249.95
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Celestron Focus Motor for SCT and EdgeHD (94155-A)
$249.95
Electronic Precision
Hands Free Accurate Focusing
DC Servo Motor
Smooth Precise Speed Control
Multiple Power Options
Powered Via AUX USB DC
Broad Compatibility
Fits Celestron SCT EdgeHD RASA
ASCOM Support
Automated Third Party Control
Indexed Positioning
Automatic Focuser Travel Limits
Pinpoint Astronomical PrecisionAutomated Motorized Telescope Focusing Solution
The Celestron Focus Motor for SCT and EdgeHD Telescopes provides precise electronic focusing for Schmidt-Cassegrain, EdgeHD, and RASA optical tubes. Effortlessly achieve critical focus using your computerized mount hand controller or PC software without introducing unwanted vibration to your setup. Perfect for both visual observers and astroimagers seeking remote control over their telescope optical tube.
Master Your Remote ObservatoryAdvanced Electronic Control For Astrophotography
Transform your stargazing and astroimaging workflow with the Celestron Focus Motor for SCT and EdgeHD Telescopes. Designed to replace standard manual focus knobs, this high-resolution motor utilizes an internal NXP Kinetis Microprocessor and durable brass spur gears with a 1:1 gear ratio to deliver 1,000 steps per revolution. Whether powered through a Celestron computerized mount AUX port, direct USB connection, or external 12V DC power, it integrates seamlessly with Celestron PWI software and third-party ASCOM drivers. Built-in indexed focus position memory prevents mechanical over-travel while enabling automated GoTo focusing return, making it an essential upgrade for remote astrophotography and planetary imaging.
Technical SpecificationsEngineering Details and Hardware Specs
Motor Type
DC Servo Motor
Microprocessor
NXP Kinetis series Arm Cortex-M4
Spur Gears
Brass 1:1 Ratio 35.2mm 42 Teeth
Focuser Coupler
Aluminum Clamping Sleeve
Steps per Revolution
1000 Steps
Speed Rates
8°/sec, 32°/sec, 128°/sec
Power Input AUX
Powered via Mount AUX Port
Power Input USB
USB2 or USB3 900mA Minimum
Power Input DC
12V DC 1A 5.5mm/2.1mm Plug
Compatibility
Post-2006 Celestron SCTs, EdgeHD, RASA
Weight
15 oz / 0.42 kg
Key Operational FeaturesCapabilities Designed For Precise Focus
Remote FocusingElectronic control via hand controller or PC
Multiple Power OptionsAUX cable, USB port, or 12V DC jack
Wide CompatibilityFits post-2006 SCTs, EdgeHD, and RASA OTAs
Indexed Focus PositionsAutomatically returns to exact focus points
Backlash CompensationEliminates gear slack for precise focus adjustments
ASCOM CompatibleEnables automated autofocus with third-party software
Tethered Port CoversProtects electrical connectors from environmental exposure
Frequently Asked QuestionsEverything you need to know
Which optical tubes are compatible with the Celestron Focus Motor for SCT and EdgeHD Telescopes?
The Celestron Focus Motor for SCT and EdgeHD Telescopes is compatible with all Celestron Schmidt-Cassegrain Telescopes (SCT) from 6” to 14” produced since 2006 (excluding 5" SCTs), all EdgeHD optical tubes, 7" Maksutov-Cassegrain, and RASA 8" and 36cm models. Note that the 11" RASA requires an optional retrofit kit.
How do I power the Celestron Focus Motor for SCT and EdgeHD Telescopes?
You can power the Celestron Focus Motor for SCT and EdgeHD Telescopes in three ways: directly through a Celestron computerized mount using the included AUX cable, via a computer USB port (requiring USB 2.0/3.0 delivering at least 900mA), or using an external 12V DC power source.
Can I use third-party software with the Celestron Focus Motor for SCT and EdgeHD Telescopes?
Yes, the Celestron Focus Motor for SCT and EdgeHD Telescopes supports ASCOM drivers, enabling seamless integration with popular third-party capture and autofocusing software programs.
Does the Celestron Focus Motor for SCT and EdgeHD Telescopes prevent hitting the focus limits?
Yes, the motor features indexed focus positioning, which prevents it from exceeding the physical mechanical limits of your telescope's focus travel while allowing automatic returns to previously indexed positions.
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