Thread: flattener spacing/backfocus - theoretical vs real
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Old 13-04-2012, 01:35 PM
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dugnsuz (Doug)
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Join Date: Aug 2005
Location: Hahndorf, South Australia
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This one Troy...
http://www.bintel.com.au/Astrophotog...oductview.aspx
Much cheaper OS as per!
Doug
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