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Primary Collimation Knobs for Newt/Dob, with M8 Female Threads

Replacements for the factory primary mirror collimation knobs for
Newts and Dobs that have M8 male studs on the back of the primary
mirror cell. See images below for comparison.

The original factory knobs are not available as a replacement or
repair part so we devised a replacement with dimensions similar to
the originals. Steel components with a 36mm diameter molded red
delrin rosette cap.

#KNP8 works on the Orion XT10 and XT12 and may fit others. If your
primary knobs look like the "Factory Part" image below and the male
threaded studs measure about 8mm diameter, our replacements
should work.

Please email us if your scope has a different configuration.


Click on images to enlarge:

$24.00 - #KNP8 - ONE Replacment focus knob for Synta style rack & pinion refractor focuser with 8.5mm shafts

$64.00 - #KNP8-3 - THREE Replacment focus knobs for Synta style rack & pinion refractor focuser with 8.5mm shafts

Prices include shipping in the USA!

Ordering Information

XT12 bottom view. - - - Click on images to enlarge:


Thanks for the pix, Dustin! - - - XT12 original knobs:


Factory part:


This is the M8 male threaded stud:


XT10 - - - Thanks Carter!



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