As an update, it occurs to me that this sort of thing, whether it's just a cable or a hardware box, should be usable to convert a lot of manual electronic focusers to computer control.

My 8" Meade LX-200 Classic Microfocuser has a "stereo" cable connector but I'll bet if I test the hand controller I'll see that the voltages change polarity depending on moving "in" or "out". I'll do that this weekend and report back.

Again, sorry if this has been covered a zillion times--I didn't turn up any answers after many google searches.

Jeff

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