Doug S
Doug S replied to the topic 'Celestron focus motor' in the forum. 3 years ago

Hi Mohamed, I got the thread pitch info from these sources (not authoritative, but the info seems trustworthy):
agenaastro.com/articles/guides/miscellan...reads-explained.html
agenaastro.com/articles/guides/focusers/...ser-on-your-sct.html
Cheers, Doug

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