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Astronomy > Telescope accessories > Focusers > Focusers > ZWO > ZWO Helical Focuser 1.25"
( 5 / 5 )
Product no.: 63166

Helical Focuser 1.25"

$ 107.00 incl. VAT, plus shipping costs
in stock
ready for shipping in 24 h + lead time
Express shipment possible for delivery the day after tomorrow, 02.03.2024!

Product description

The very compact ZWO Helical Focuser allows for precise focusing of eyepices or cameras. It is ideal in conection with an off-axis-guider and a guide-camera.

The focuser features a female T2-thread on the telescope side, while allowing the attachement of 1.25" equipment on the eyepice/camera side. In addition, there is a male T2 thread on the camera side.

During focusing, the attached accessories keep their orientation and don't rotate. The exact focus position can be fixed with a clamp screw.



Connection (to the telescope)
T2 (M42 x 0,75)
Connection ( to eyepiece)
Draw Tube Travel (mm)
Exactness of focusing (mm)


Ring clamp


Type of build
Micro Focuser
ZWO Helical Focuser 1.25"

Customer reviews

Off axis necessity

Review by E. S. on 03.02.2023 09:49:10

( 5 / 5 )

I was delaying the purchase of this item, thinking i do not need it since of axis guider is not a necessity. But i was so wrong. Before getting the focuser I was never able to perfectly focus my off axis camera.

Now the product itself is well, made and feels sturdy, the focusing motion has a good amount of resistance and feels pleasant while allowing fine adjustments. It also has a locking screw to lock the focus position in place. I also liked that it has a ruler indicating the exact focuser position.

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