No its a good question, and what I do is calibrate the original unprocessed raw images in Iris. When Im left with the finished stacked image, I drop all the blue and green data, leaving only red, I then turn that to monochrome. I could leave it as red but as theres no other colour, its best to leave it as monochrome. If I left the other colours in, that wouldnt do well, as theres virtually no details in the other colours, only noise. Users of monochrome CCD cameras dont have to worry about that as all the pixels can see the red light.
Scott
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