Processing the Orion Nebula (M42) in Pixinsight

The Orion Nebula (M42) is one of the most epic objects in the night sky. It comes around every winter here in the northeast. I shot about 7 hours of data including 4 hours of LRGB and 3 hours of Hydrogen Alpha (HA). After I finished, I had a hard time figuring out how to best process it. Adding Ha to the image directly made the Orion too red. I wanted to bring out the dust around the nebula and came to a solution that I was happy with–using the Ha as luminance but masking M42 with the HA itself. 00:00 Intro 00:28 What's Been Done Prior To This Video 01:45 RGB Channel Combination 02:57 Spectrophotometric Color Calibration 07:27 Histogram Transformation 09:10 Adding Luminance via LRGB Combination 10:04 Adding Ha via LRGB Combination 11:44 Star Xterminator 12:52 Curves Transformation 14:31 Local Histogram Equalization 15:19 Noise Xterminator 16:16 Recombine Stars via PixelMath 17:03 Final Touches