Eliminate vibrations and achieve finer and more precise focusing on your telescope's Crayford or rack-and-pinion focuser with iOptron's iEAF Electronic Automatic Focuser. Powered via the 5V USB port, it features a precise stepper motor that delivers 3 rpm without vibration or noise. The focuser is ASCOM compatible and will work with most planetarium and imaging software.

Using an electric focuser eliminates the need to touch knobs which cause vibration and allows a level of precision that hand focusing is usually unable to achieve. The Electronic Automatic Focuser also locks the position when the control button is released to eliminate backlash—a valuable function for astrophotography or when trying to resolve dim or close objects like binary stars or clusters.

For Crayford or Rack-and-Pinion Focusers    Stepper Motor    Precise Focusing with Zero Backlash    Quiet-Running Motor Drive    Powered by 5V USB 2.0 Port    ASCOM or Manual Control    3 RPM Speed    Built-In Temperature Sensor

Related Questions and Answers

Q: 1. I have an IEQ45 Pro Mount. Will this pier work with that mount?

A: Yes, it will be fully compatible..

Q: 2. The Sky-Watcher Evo 100ED and the Sky-Warcher 80ED both have Synta 96mm OT attachments for a focuser. Is this a 96mm focuser?

A: The Explore Scientific APO EDT Series Rack & Pinion Focuser (2") is not a 96" focuser.

Q: 3. Will this work with celestron avx 8-n?

A: The iOptron iGuider Autoguider System has not been tested with the Celestron Advanced VX, so there is no definitive answer for this.

Q: 4. From the photo, it looks like there is a "step" inside the counter weight hole. Is the .8" diameter measurement the wider part or the narrower part of the hole?

A: The image is the same image that is on the iOptron website. There is no step.

Q: 5. Will this work with the new CEM70?

A: No

Q: 6. Would this fit in a Skywatcher eqm35 pro ?

A: That is not listed as compatible.

Q: 7. Does it work both from any standard web browser AND from a smartphone app (iPhone & Android)?

A: The iOptron StarFi Adapter uses the SkySafari from Simulation Curriculum Corp for the app. There is no limitation for the web browser when using your computer.

Q: 8. Will this work with an iOptron Cube Pro 2

A: The iOptron 8" MiniPier for GoTo Mounts BH #IO8032 • MFR #8032 will work with the iOptron SkyTracker Pro Camera Mount with Polar Scope (Mount Only) BH #IO3322 • MFR #3322

Q: 9. Will this pier work with the 1.75" tripod that came with my GEM45?

A: No, the iOptron 8" MiniPier for GoTo Mounts will not work with the iOptron GEM45 Equatorial GoTo Mount with 1.75" LiteRoc Tripod. Alternatively one can use the iOptron 6" MiniPier for CEM40/GEM45 Mounts, BH #IO8031 (https://bhpho.to/3pFRBXX).

Q: 10. Hi- Will the Starfi work with ioptron's ALt-az pro?

A: The iOptron StarFi Adapter is not supported for use with the AZ Mount Pro Head.