Thanks Laurie, Ross, Mark and Chris.
Thanks Chris I tried following your advice about the green channel but still can’t seem to correct it fully, I don’t have Photoshop I am using an old 1996 version of Corel Photopaint it is the only photo editing program I have, it is very basic not as many nice plugins as Photoshop. I think Photoshop and all those great plugins will help me a lot.
I have attached new images of the edited original and the separated channels red, green and blue, I also added an image of the un cropped original with oversaturation it seems to show my problem may be linked to vignetting even though I added 50 good flats into the stacking process. Any ideas about this are welcome.
Thanks Wayne.
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