Celestron C10-N Telescope User Manual


 
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IMPORTANT: After making the first, or each adjustment, it is necessary to re-aim the telescope tube to re-center
the star again in the center of the field of view. The star image can then be judged for symmetry by going just inside
and outside of exact focus and noting the star's pattern. Improvement should be seen if the proper adjustments are
made. Since three screws are present, it may be necessary to move at least two of them to achieve the necessary
mirror movement.