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Good points.
If I open a raw image of a daytime scene in IRIS then convert it back to colour CFA, I get a colour image, but not a good looking one, as linera conversion with no automatic white balance isnt suited to daylight photography, leading to makers of digital cameras using their fancy in camera processing, to give us normal images.
I do wonder now, if we are better off WITH this processing, as we try to get astro images that as closely as possible mimic what the eye could see if it were many times more sensetive?
I have now found I get better eta carina images by opening the RAWs with the canon software (or in the case of my 300D with Photoshop CS), then stacking and processing them with either IRIS of PS Cs, as the nebula just seems to look better with less central burnout if done that way rather then letting IRIS do the RAW extraction via CFA, though for the really low surface brightness stuff Iris may be the go to try and lift the faint stuff fromthe sky background.
Scott
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