Autofocus clutch / manual release

(1 customer review)

Original price was: $80.00.Current price is: $60.00.

Autofocus to manual focus in seconds for almost any focuser and motor combination.

SKU: N/A Category:


*Free shipping on orders in the US! $10 shipping international shipping

Switch between autofocus and manual adjustment in seconds without tools. Simply tighten or loosen the collar to switch modes of focus. Protects your motor and focuser gears if you run out of travel in the drawtube. The clutch will slip before the gears in the focuser get damaged! Quickly get close to focus by hand and then switch to the motor for quick and perfect focus control. Packing up for the night and forgot to rack the focuser in to fit in your case? Now you can rack the focuser back in without getting your power cords back out!

Measure your shaft diameter and select from the menu. Please contact me if you don’t see your size listed. Made from aluminum and Delrin, these couplers are professionally made. These couplers can stand up to filter wheels, large cameras, and focal reducers. Proven to work with top brands like Moonlite, ZWO EAF, Focus Cube 2,  and more. These clutches held more weight than four of the top brand motors could produce. The motors would fault out before the clutch would slip.

*Common motor shaft sizes. Focus Cube 2 = 5mm, ZWO EAF = 5mm (V1 and V2), All Moonlite focusers and motors = 3/16 inch

*Sharpstar, Askar, Altair, and ZWO branded telescopes will need the installation kit.

*Edge owners – Clutch will not work if you’re imaging planets. The short focal length of a planetary camera will cause the focuser knob to bottom out on the clutch. Deep space cameras with longer backspacing have the mirror adjusting in much further so clearance is not an issue.



1 review for Autofocus clutch / manual release

  1. Richard Clements (verified owner)

    I have resisted getting an electronic focuser because the scope I would use it on has many more purposes than just astrophotography (EAA in my case). If I had an autofocuser, I needede to be able to disconnect it and be able to use my scope’s focuser manually (without the need for electricity) – without dismantling the whole thing. I found this device discussed on Cloudy Nights, and it absolutely fills this important (to me) need. I now own a ZWO EAF and this device, and it is just great.

    I really appreciate an independent maker who does an outstanding job designing and fabricating a pretty niche bit of kit that really makes astro-life better! Matt has hit it out of the park!

Add a review

Your email address will not be published. Required fields are marked *