Ive always had this effect, each image OK themselves, but a few mm difference between them. But not with SBIG internal guide. Dont worry about it if the stars are round in each sub. IMO, its differential flexure between the image and guide scope, theres nothing you can do about it.
edit... umm, thats assuming a mm or 2, if its driftting off the screen, then theres a mounting problem on the guide scope.
Last edited by Bassnut; 11-01-2009 at 04:52 PM.
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