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Peter,
Thanks for your reply! With my camera 100 microns would be about 16-17 pix. Take a look at the attached photo! This was not with my best adapter and it shows ~ 232 pix error at 180 degrees rotation. My much better adapter reduces this to 190 pix which is over 1 mm in error! (the chip is a KAF16200)
According to the manufacturer this is considered "normal." I was completely mystified by this answer. They said the CCD has to "float" on top of the cooler to avoid thermal paths from the case, that there are a few pins to keep it reasonably centered. I cannot believe this is "normal" by any standard for other astro-cameras.
I suppose I'm being obsessive, but this is a pain to live with. Pointing sucks unless I'm at the rotator PA that the model was generated at.
Peter
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