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Imaging at long focal lengths
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29-08-2013, 05:35 PM
Geoff45
(Geoff)
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Join Date: Jul 2006
Location: Sydney
Posts: 2,631
Google "focal ratio myth". You should get many hits including articles from Stan Moore (CCDStack originator) and Craig Stark (PHD originator). You may find their views are contrary to those commonly held. Yes you can DS image at f12.
Geoff
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