Within reason I don't see the glows as hugely problematic.
I did some ten minute subs with my ASI294 at one point and even a couple of 20 minute ones and the glow could still be calibrated out. So long as they do not become so pronounced that actual data is lost to saturated pixels in the areas where there are glows I don't see a great issue, the raw subs might look ugly but if it calibrates out to nothing then what issue unless you are trying to look at things live?
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