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wojo
super member
Reged: 09/28/07
Posts: 148
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Re: home made collimating sight tube
07/03/08 08:31 PM
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JOHN...... If you are looking for how to locate the position for the cross hairs, heres how I do it. Take a index card that will wrap around the tube ,carefully align edge of paper with edge of tube, cut paper so ends meet, in other words, 1 wrap around tube . Fold in half , fold halves in half. re wrap around tube and mark tube at folds. The fussier you are about getting it accurate the better. Once you have your cross hairs in place you can test your work by inserting tube in focuser and rotating it 1/4 turn at a time, if intersection of cross hairs stay in same place you have a winner! ..... HOPE this is what your looking for.... WOJO
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