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Nice image Nick. I like it. Getting up to date biases and darks probably won't handle the odd colour pixel. Not sure where those little buggers come from but they are common in processing. Sometimes very few. Usually data rejection done well gets rid of most.
But simply going around the image a bit zoomed in with the spot healing tool set to a small circle and click on them gets rid of them easily. Usually I see a few and occasionally none. But I look for them in every image I do just about just in case.
Something is off with your optics a tad. The corners of the images are showing coma with the small 8300 sensor. This may mean collimation, or your primary and secondary mirror spacing is off a little. Something. Its not tilt as it seems equal on all 4 corners. I am being very picky here as it is not very visible. I am correcting something similar on my setup so I notice these things at the moment.
Also you need to crop the image a bit as the edges show some of the usual slightly misaligned subs that you have to crop out near the end of your processing a stack of images. Its a part of processing every stacked image to crop off that little rough edge where small parts don't align.
A bit more saturation and some selective sharpening (sharpening only the brighter detailed areas using a mask) would enhance this fine image more in my opinion. The data is there. Enhancing the blue spray of the star making area usually brings this object up. The jet may also come up if its in the data.
Greg.
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