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| Focuser Travel
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Walter Hamler on March 25, 2001 16:10:03 UTC |
It's ok for it to prodrude a little, but not more than the mirror side clearance in the tube. Otherwise it will intercept the incoming light cone causing loss of light and diffraction effects. Look at a defocused star image when the focuser is racked in fully and see if you can see the image of the focuser tube in the star pattern. |
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