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How important is mirror quality for deep sky imaging?
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20-04-2012, 02:12 PM
gregbradley
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Join Date: Feb 2006
Location: Sydney
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Diffraction limited at 1/4 wave. Beyond that and the atmosphere won't let you see the difference unless you are on top of a mountain (and no mountain in Oz either!). Planetary high mag though, not so sure.
Greg.
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