QHY9 and chip orthogonality.

[hercule1939]

Hi,

I have now noticed, that the CCD-chip in my QHY9 is not perfectly orthogonal to an optical axel.
When fast focal ratios are used this comes more obivious, stars are not in focus in the other side of the image.
CCD-inspector tels me the same story.
Is there a method to adjust this or do I have to make up a DIY solution?

Has anyone else noticed a similar problem?

J-P

Ps.
It has to be the chip, since camera rotation rotates the problem as well.

[QiuHY]

Hello,

      The CCD should be parallel with the camera back case. Because CCD sensor is located with the TEC and TEC is located with the back case.

      You can adjust the front case. There is three screw to fix the front case . If front case is not parrallel with back case, this problem may happen.


Best regards,