Quote:
Originally Posted by Merlin66
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.......
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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)?