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Jason,
Thanks very much for your reply.
I have been using CCDStack to measure the star centroid ADU. I picked two stars, one bright, one dimmer on the photo and received the following:
Image File Imager1120-2.5 min unguided 2x2
centroid {X=903.9657, Y=482.3339}
FWHM 2.3
background 1,451.43
maximum 34,510
flux within halfMax 73,604
Image File Imager1120-2.5 min unguided 2x2
centroid {X=950.3286, Y=534.4593}
FWHM 5
background 1,446.66
maximum 65,535
flux within halfMax
So, I would say, yes, the stars have reached 65K adu in 2.5 min at 2x2. Am I making an error?
Thanks for the link to the CCDware calculator! I missed that one.
Peter
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