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Not sure about the stretch, that is all masked out so that the stars remain basically the same. It could be the blur mask I have applied that is affecting the star field. Mind you I did work this data a lot. Like you I would have thought more data would be present. This is 140 minutes of Ha, but I think it just needs more. The scope is small, so it will require more time to even out the noise and raise the signal. I will try to double the current values for all filters and see what that bring to the table.
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