Thread: CN-212 focusing
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Old 21-11-2018, 08:06 AM
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multiweb (Marc)
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Join Date: Oct 2007
Location: Hinchinbrook
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CN-212 focusing

Hi guys, just thinking about the simplest most efficient least intrusive way of achieving motorized focusing of the primary for my CN-212. I haven't decided yet if I'm going to use a direct drive or a belt and offset the motor. It's going to depend on how much room I have sideways at the back once the AO is in there as it's quite wide.

One thing I know for sure is that I won't be drilling the back cell and won't be changing the focuser knob on the telescope. So the solution will be an add on rather than changing or modifying existing parts.

I came across this picture on line. It looks like a plastic sleeve with three grub screws to secure the cover on the focusing know and it also has a geared part for a belt. It was part of a robofocus setup advertised on astromart. Is this part of a robofocus kit or just a third party contraption?
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