Batch calibration basics

[astrodoc71]

I have a set of subs taken over many nights at different temps, with appropriately matched darks. Does the script match the dark and light temps if they appear in fits header? If I use 'optimize darks' will it still look for temperature matched files first?
Thanks

[astrodoc71]

Well it does look like it worked totally fine, but I'm wondering now why there was scaling mentioned in the process console during the calibration. I think the factors were around .9 or so. Maybe this is expected for properly matched darks? Just curious

[pfile]

im not sure about how the script matches darks, but scaling factors of 0.9 for matched darks seems about right to me. remember pixinsight is attempting to minimize noise in the calibrated image, numerically. because of this it does not actually care what the duration of the dark is relative to the light.

[Juan Conejero]

Congratulations! If you are getting dark scaling factors around 0.9, that means that you are using very well matched darks.

As Rob has said, our dark frame optimization routine finds the scaling factors that minimize noise in the calibrated frames. It is a purely numerical solution that ignores exposure times, temperatures, etc, because it does not need them: it works exclusively with the pixel data.

[astrodoc71]

Hmmm. '....does not need them' That's very cool! Thanks guys.