Don thanks for the informations.
In my camera the dark-colored chip is not centered
in the aperture window you can see it whith no effort
it is clear.
I only use the Meade eyepiece holder direct connected
in the back of Meade LX200 12".
I tested the Camera trying to get images in land mode
In the results you can see that the camera gets
the edge of the telescope FOV.
You don't thing that I am overreacting about !!
I can tell that the camera can't see the center of the telescope Field.
You have to believe me the ccd chip is far physically
misaligned in my camera.
So the question is obvious can I align the position
of the CCD chip or it is stable mounted and I can do nothing?
Thanks
George Nikolidakis


Don wrote
>The CCD in this camera is actually two chips, joined together. Only one is
>light sensitive, and that is the black, or darker one you see. The lighter
>one is the "transfer chip", where the data is sent virtually instantly
after
>exposure. Because this camera has no mechanical shutter, after the exposure
>time is up, the data is sent from the dark-colored chip (the
light-sensitive
>one) to the lighter-colored chip, where it is held to be read out by the
>electronics. This transfer chip is not light-sensitive. This prevents the
>light from collecting in the actual CCD bins for longer than the desired
>exposure while the electronics are reading the data.
>Indeed, neither chip is centered in the aperture window (the window
directly
>in front of the chip). But you have to look at the chip with regard to the
>telescope mount, which is the female T-thread around the aperture window,
>not the aperture window itself. When compared to the T-thread, the
>dark-colored chip is precisely centered.
>If yours isn't, and I'm not sure how it couldn't be, you have a defect. I
>believe your off-center images are the result of your mounting scheme for
>the camera or other anomalies in your system. Tell us how you have it
>mounted, and maybe we can offer greater insight. Again, I don't think the
>chip is physically misaligned in your camera.
>Hope this helps,
>Don

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