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Old 23-04-2013, 12:26 PM
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Merlin66 (Ken)
Spectroscopy Wizard

Merlin66 is offline
Join Date: Oct 2005
Location: St Leonards, Vic
Posts: 6,965
Sounds a bit strange...
I use my powermates with the T thread adaptors ( the 1.25" section unscrews...) this brings the camera/ CCD very close to the rear of the body.
As the focus is (almost) independent of the back focus I can only assume you're not getting the front lens far enough into the light path??
Does the DSLR body focus at prime focus OK? How much "spare" travel does it allow?
Can you focus any of them with a low powered eyepiece?
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