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Calibrating OSC images : Debayer before or after calibration


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Starting down my OSC  career and understand the debayer concept.

But do you calibrate with darks, flats and bias BEFORE debayer or AFTER debayer ?

If I were to guess, I would say before, but I am unsure.

Many thanks in advance

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  • 2 weeks later...

And I think the preferred methodology,  assuming your OSC camera has a CMOS sensor, is to use dark flats (darks with the same exposure time as your flats) rather than bias frames for the image calibration.

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