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Old 22-11-2012, 05:50 PM
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[1ponders] (Paul)
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Join Date: Nov 2004
Location: Obi Obi, Qld
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Peter I'm not sure where I heard/read it, but I remember something about if the two imaging systems are not orthogonal then you well get frame shift. Particularly if they are also non-orthogonal to the mount. I experienced the same as you at one stage and just about went balmy trying to eliminate it. I also seem to remember something about even slight polar misalignment can exacerbate the problem as well.
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