Thanks Mike!
I did try decon initially but I probably overdid it as it left weird wormy artefacts despite try indifferent values and reiterations so dropped it altogether. I may give it a shot again with this image given more time.
I probably should have been fussier with my subframe selection too (but then I'd be left with fewer hours of integration). We had days of good/bad seeing where I was. Also I was on Bin1 and with my setup it put me at 0.31"/px which was quite oversampled.
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