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Paul, having gone the same way (12” f/4), and even with the experience I have (making, testing and of course collimating Newtonians for more than 40 years) I ended up buying autocollimator. Fast scopes, large chips and small pixels are combination that Devil himself must have invented!
I fully reccomend Catseye XLKP devices. They really work, are made extremelly well, and quite ingenious. I’ll never collimate fast astrograph again without it.
Good luck,
Bratislav
Last edited by bratislav; 20-07-2018 at 11:06 AM.
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