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Is your current focuser a crayford or R&P?
You could use an electric motor focuser, I think Bintel sell a Skywatcher one - IIRC Ken came up with a mod using part of an old in-line fuel filter as an adaptor for use on crayfords - there are several old thread about this. These units just use a small hand controller box.
If you want the 10:1 bizo, someone on here recently posted that bintel will sell you the actual 10:1 mechanism which you can just fit to your existing GSO style focuser.
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