Description (Wikipedia)NGC 2146 is a
barred spiral galaxy type SB(s)ab pec in the
constellationCamelopardalis. The galaxy was discovered in 1876 by
Friedrich August Theodor Winnecke.
[2]It has a diameter of 80,000 lyr.
[2] The galaxy's most conspicuous feature is the dusty lanes of a
spiral arm lying across the core of the galaxy as seen from Earth, the arm having been bent 45 degrees by a close encounter with a smaller galaxy possibly NGC 2146a about 0.8 billion years ago.
[2] This close encounter is credited with the relatively high rates of
star formation that qualify NGC 2146 as a
starburst galaxy.
Personal NoteI always take a professional picture of the object (e.g. HST) and try to get as close as possible to that. In this case, the end result of my own processing looked a bit pale in comparison. Therefor I applied a last dynamic range increase to the final image, which gave it a pop. Bit of a balancing act not to overdo it. I hope I hit the right level.
WorkflowChrominance: WBPP, autocrop, Graxpert, Linear Fit, RGB combination, Background Neutralisation, Photometric ColorCalibration, Deconvolution, Maskstretch, ArcsinhStretch, denoise, Curves
Luminance: WBPP with 2xdrizzle, DBE, Deconvolution, denoise, Histogram Transformation, Curves, denoise, HDRM MT, UnsharpMask, LocalHistogramTransformation
Added the H channel using the method described by Charles Hagen:
https://www.nightphotons.com/guides/advanced-narrowband-combination 
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