Quote:
Originally Posted by lacad01
Not sure if applicable here but I've seen other threads where collimation on refractors can be acheived by adjusting the seating of the focusser or unscrewing the focusser captive screws, rotating the focusser and resecuring.
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Cheers Adam, I never even thought about the other end. This one has had the R&P focuser changed to a rotatable crayford and there's the problem. Took the front cell off, taped paper over the tube end and shot a laser down the tube. Twas a mile off, like 1/2 way from center to the edge of the tube. Re centered the focuser and it's now a lot closer. Thanks all.