Quote:
Originally Posted by Stefan Buda
Well, it turns out that this contraption can be used only on astrographs that use a guidescope for guiding. The locking mechanism can't rotate past a typical OAG camera focuser. 
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Stefan kindly gave me that unit to beta test.
Despite the literal OAG snag, the fit and finish is very polished.
He does superb work

How I wish that standard could be universally seen in my "made in China" bits & bobs.