Thread: LX200R backfocus distance ?
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Old 29-10-2009, 09:59 AM
casstony
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Join Date: Feb 2006
Location: Warragul, Vic
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Found it: only tested back to 157mm on a C11, a bit better up close, no strehl change between 127mm and 157mm:

http://rohr.aiax.de/@C11Jul07-05.jpg
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