I opened it up in photoshop to attempt to recolour it for you, however the red channel seems to have plenty of data, much of the galaxy is visible in the red channel, slightly less in the green, and next to nothing in the blue.. I think your NBP filter destroyed the image?
In any case, the guiding, focus and target look very good (more so when converted to greyscale.. I would put forth the idea of perhaps cropping the image down a bit, so we get a bigger look at M83 without the surrounding empty space...
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