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Howdy.
Thanks for the tips.
I did a dark and subtracted it with Photoshop. It got rid of the Amp glow, but seemed to reduce the contrast a bit, geting the image to similar appearance as the one without dark subtraction seemed to introduce more noise. Ive never had much luck dark subtracting, or flat flielding for that matter. I can dark subtract with Photoshop and Registax, and flat field with registax, but Registax doesnt like 16 bit Tiffs. Flatfielding also seems to reduce contrast, givng rather flat images as a result. There must be an art to it (and better software), I was shocked at how expensive the good astro image processing software is, beyond my budget.
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