Celestron CGE925 Bedienerhandbuch PDF herunterladen (Seite 53)

7. Once the star image is in the center of the field of view, check to see if the rings are concentric. If the

central obstruction is still skewed in the same direction, then continue turning the screw(s) in the same

direction. If you find that the ring pattern is skewed in a different direction, than simply repeat steps 2

through 6 as described above for the new direction.

Perfect collimation will yield a star image very symmetrical just inside and outside of focus. In addition, perfect

collimation delivers the optimal optical performance specifications that your telescope is built to achieve.

If seeing (i.e., air steadiness) is turbulent, collimation is difficult to judge. Wait until a better night if it is turbulent

or aim to a steadier part of the sky. A steadier part of the sky is judged by steady versus twinkling stars.

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Celestron CGE925 Bedienerhandbuch Seite 53