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Crayford style Focuser
Screws on to the back of popular SCT telescopes to provide ultra-fine focus adjustments. Only been used once as the scope was to heavy for my mount. $85 plus P/P
(This is a photo from the Bintel cat. as I can't do any better!)
Last edited by speach; 26-10-2019 at 09:23 AM.
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