Helix Nebula

Helix Nebula Pro dataset. Very happy with what I could get for just a single 10 minute sub of Sii, Ha, and Oiii.

Registered and stacked in pixinsight, then used combine rgb in APP, setting Sii to ~70% R, Ha to 100% R 100% G, and Oiii to 100% B. Further altered colors using HSL, shifting yellows towards red. Some slight denoising and then a stretch using pixinsight. Used photoshop for saturation and contrast enhancement. Some color noise reduction using camera raw filter. Further color grading in camera raw filter, generally enhancing the reds and yellows, and making the faint greens more prominent. Finally used the healing brush to clean up some hot pixels and streaks left in the image.