Batch Preprocessing and Dark Scaling

[astrovienna]

Does BPP automatically time-scale and temperature-scale a master dark?  I've got a master dark made from 20 minute, -20C subs.  It was prepared via BPP in an earlier processing  (my M1 image).  Can I use that master (plus a master bias) to calibrate 2 minute, -10C lights in a new BPP run?

Kevin

[pfile]

yes, however the process underlying the BPP script (imagecalibration) does not look at duration or temperature, but rather scales the dark until the noise in the output is minimized.

i don't know whether or not this dark optimization (as it's called in PI) is turned on by default in BPP or not.

rob

[astrovienna]

Thanks, Rob.  That helps.  Now, if I'm only using the master dark to support Cosmetic Correction, should it be the same duration and temperature as the lights?