Thanks all for the kind words. I will be looking into another camera, possibly a mono. Just waiting for the budget to come through and the accountant (wifes) approval
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Interesting that a few more images may bring out the red. May give a go.
I will look into the bias frames, but I have already taken them and add then for the sake of it. Curious if this might be creating the banding in the image.
Currently looking at a different way of taking flats, using an LED light panel with a linear regulator and controller.