Quote:
Originally Posted by Moon
David,
Getting back to your 12.5 - have you received the focuser and corrector yet? From what I understand, the ASA Corrector has a true OD of 3 inches and the focuser also has true ID of 3 inches. Just wondering if you had to do something special to make it fit.
James
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Well, my understanding is that focuser drawtubes, etc are machined with a small clearance to allow for true sized male fittings. However, I don't like nasty surprises so I asked Optec before I ordered the focuser and here is part of their reply:
"the I.D. of the TCF-S3 drawtube is 3.005 +0.001/-0.002 so we hold extremely tight tolerences. Assuming the corrector is designed to fit into a 3-inch bore, the fit should be snug."
So, about 1/8mm diameter clearance. I have had the Keller corrector and focuser for a while now, and yes I did try the Keller in the focuser and it does fit
