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Old 18-02-2019, 08:41 AM
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Merlin66 (Ken)
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SCT thread sizes and focuser options


An interesting paper which outlines the issues with SCT focusers.
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Old 18-02-2019, 09:07 AM
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The_bluester (Paul)
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Yes, I landed on that page while researching on mine. I still don't know which way to jump. I have even looked at just adding a Robofocus to the existing Feathertouch to begin with, but by the time I piece together one of those I am getting perilously close to the cost of a Moonlite with stepper motor.

If I knew that the 2" reducers that can go post drawtube were good for my application it would simplify things a lot. I might have to chance my arm and buy one and then use spacers to set it up as though it was on the end of a focuser drawtube and see if I can actually rack the mirror far enough up the tube to achieve focus.
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