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Back to basics - barebones altaz mount
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04-03-2019, 08:00 PM
bojan
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Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 7,115
Forgot to mention - exactly the same principle (timing belt on friction wheel) I used ~13 yo for motorized focuser (I still use it for visual), see attachment.
Tension is controlled by means of excentric drum (motor is inside it).
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