Quote:
Originally Posted by TrevorW
once sorted PHD will track perfectly for several shots and then for no reason I can think of lose DEC tracking
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When you track in RA your scope balance in DEC changes. As a result PHD DEC tracking will drift north or south. If this happens, stop tracking, re-calibrate in place on the same star, load the worm in DEC and start guiding again. I garantee you that your DEC drift will be gone.