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Processing
Hi Octane,
Yes I did Darks, my flats turned out to be unusable (hence a few donuts are visible). The reason was the sky shot I used for the flat was not as flat as I thought and if I use them I get a background gradient introduced. I could open up the lens a little say f5.6 would be ok but I think at f4 I will get some bad SA however that would only mean I could reduce the exposure time (and hence trcking issues) - it would not do anything to reduce the impact of skyglow would it?
I re-processed with a bit of NR in NeatImage - better but you can see I have had to push to hard...not sure what is causing the purple glow to creep in - light polution or something else....
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