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Old 08-02-2013, 08:20 PM
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mithrandir (Andrew)
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Join Date: Jan 2009
Location: Glenhaven
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Quote:
Originally Posted by Merlin66 View Post
Geoff,
yes, you have to measure the focal length of the reducer lens to determine if it's one of the "short" or "long" types.......
Ken, measure from where? Terry said "the back of the flange".

Is that OTA side (which has a female thread and hence would include the physical length of the FR) or the CCD side (which has a male thread and would not include the FR)?
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