Sorry to jump the gun but was having too much fun trying things! As a first step I followed Ricks advice and created a range mask, isolating the reflections and leaving the star, and then replaced the reflections with an estimate of the background (MMT). I had to soften the mask a little and still ended up with some residual halos. I did this on the three Ha, S2 and O3 tone maps and also on the Luminance (which in this version is just Ha). A start perhaps? Before and after pics below.
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