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Esprit focuser slipping


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Hello,

I have one of the newer esprit scopes where the focuser is locked down by a little lever, last night was a shake down of the kit and a good test for me as to whether I remember how to take an image, all went well and on return to the observatory subs had fallen way out of focus over a few hours, I can't find any guides on how to adjust the tension on the lock lever, it seems tight but obviously not tight enough, appreciate any assistance.

Thanks Mark

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A motor focuser can hold the focus knob tight and prevent movement if that is the issue, although it could be a temperature effect. Was the scope at high elevation with the weight of the camera pulling it down? Is the camera equipment within the load limit of the scope?

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I've not had issues with focus drift before, yes the scope was pointing almost straight up , the focuser is not overloaded. The small locking lever seems a little loose when in lock position also I can adjust the focus slightly when the focus is locked so I'm suspecting an adjustment is needed somewhere.

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