Calibrating debayered lights?

[Alnitak73]

Having just bought Pixinsight, I wanted to try to reprocess some wide-field pictures of Orion that I took back in January.

Unfortunately it seems I inadvertently saved the original flats (captured with Nebulosity) in RGB mode.

Is it practical or possible to perform bias frame calibration against those using by greyscale bias frames?

thanks,

Ray

[pfile]

it is possible, but since debayering usually involves interpolation, the results are invalid in the mathematical sense.

i suppose if you can remember what debayering method was used for the flats, if you use that same mode against your bias/darks/lights and then run them through ImageCalibration, you can see if the results seem OK.

rob