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Andyyy

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    Illinois

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  1. john_jensen65 started following Andyyy
  2. Andyyy
    I am not having problems extending the tube, I just need the secondary mirror centered in the focuser for collimation. The problem I am having is that the center screw will not allow me to get the secondary high enough to be centered in the focuser. I don't understand...
  3. Andyyy
    I have a Sky-Watcher 12" flex-tube dob, and I'm having trouble centering the secondary in the focuser. No matter how much I tighten the center screw, the mirror remains too close to the primary. If I make it too tight, the 3 tilt adjusters don't work. How can I get the secondary high enough to be centered in the focuser? (I have a sight tube and a cheshire)
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