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Thanks Adam, seems about right.
I'm doing a little project to try and verify Focal Reducers' published focal length figures, just using handheld FR, sunlight and a piece of white paper to adjust for focus point with tape measure.
Did my Meade 6.3, 3.3, Antares 6.3 and 5, and GSO 5. All 2" or T size and got some interesting numbers today.
Some jibe quite well with published figures, some are totally different. After I play with them + spacing in my C8, I'll publish them here for others' possible edification.
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