Nice one, Erik! I'd like to photograph this one myself, but it's one of few galaxies that are too big for my FOV and I don't really want to do a mosaic.
I'm guessing the lack of blue is related to the blending of the Ha data. How did you go about mixing the Ha in? Not sure I can offer much advice there, since I've only done it a couple of times, but I'm sure others with more experience can chime in on that.
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