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Old 10-01-2022, 11:09 AM
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Motorized bahtinov mask

It is hard (and somewhat dangerous for me, the scope is accessible with help of ladders) to place-replace B-mask in the dark during photo session to check focus..

Idea to do something about it came from here.

I decided to use this motor, with additional worm gear reduction, initial design is attached.. I have some plastic gears and worms in my boxes, and bracket will be 3D-printed.

Long time ago I used Delphi4 for some projects involving GUI (focus).. maybe I will use it again (or similar freeware.. any suggestions? Lazarus maybe?) for B-mask control (I will need to use 2 relays from Relay box discussed here.
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Last edited by bojan; 10-01-2022 at 05:25 PM.
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Old 10-01-2022, 01:54 PM
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mswhin63 (Malcolm)
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I am looking to do the same. How I motorise it I am not sure. But for controlling I will use Astroberry so the scripts can do this automatically.

I hope to make another mount and control it with Onstep. I am hoping there is a lot of output functionality available for control as well.
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Old 10-03-2022, 04:38 PM
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Model done, now printing... 3 parts.
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Last edited by bojan; 10-03-2022 at 06:00 PM.
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Old 11-03-2022, 03:18 PM
sfarndell (Scott)
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Following with interest! Your engineering skills are quite admirable so keen to see how you solve this.
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