Wednesday, July 25, 2018

85ED refractor DIY electric focuser

This is the third generation.

I have remounted the motor to a acrylic plate:




And then stick it to the metal mounting plate.  The metal mounting plate is then attached to the focuser via existing screw holes.  I have bought two M3 thumbscrew for easy attachment, and for easy disengagement... Rubber rings should be added for rapid disengagement.



The above black set screw might intervene the meshing and thus I have pulled out the gear on the focus shaft a bit like below:




Initial testing:


Disengaging the motor is not very easy right now, I have to figure out way to solve it.  Hopefully a few rubber rings below the thumb screws should do the job.

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