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Have the same scope and have been using a Rigel nStep system. Leon makes the bracket (some are standard but they can be custom made) to which you add their motors, cogs and controller. My Skywatcher focuser is the Crayford with the extra bar on it (more stable?) but have found with heavy-ish gear (ASI1600MM-Pro, 8 position filter wheel, ZWO Off Axis Guider and the Skywatcher f4 Aplanatic coma corrector) the draw tube slops under the weight, throwing collimation out. The collimation varies across the night too as the relative position of the focuser changes.... Have just ordered a 2” Moonlite with a stepper motor to replace it. While not a cheap option it could solve some small collimation bugs (if you have any) and give you automated focusing. The Rigel system I have found to be very reliable though :-)
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