Quote:
Originally Posted by Ukastronomer
yes but that has teeth the other is a plain surface
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If you look at the photo carefully, you will see the flat groove on the focus knob (so belt can't fall off) - because I wanted to be able to use it manually by lowering tension (and friction)... Teeth are on the small pinion.
I belive they were driven by the same idea when designing the mount we are disscussing.
The only problem I see with that mount is relatively low transmission rate, so the positioning will be quite cuarse.
But probabbly OK for shorter FL and lower magnifications....