Mini-Harmonic Drive Auto Focuser

General
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I see a number of companies have come out with autofocusers. ZWO, Pegasus and QHYCCD come to mind. Everyone has some level of backlash. Would it be possible to come up with a ‘mini-harmonic drive’ auto focuser with ‘virtually zero backlash’…
If you come up with one…I would certainly like credit for the idea…as well as testing it… Just putting it out there. BTW: I have a WD-17 mount for my WO RedCat 71 WIFD.

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Hi,

Thanks for your suggestion.

Indeed we have some study for that, but as small SWG itself is very expensive(more than an entire new autofocuses like current one), like size of diameter less than 25mm. It’s very hard to do this with especially size control considerations.
So due to cost and technical limitations, it may not be available on market for some times.

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