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This is a quick comparison that I've done. The first is a straight RGB (not an astro RGB or modded DSLR) and the second is a HaRGB.
I've been doing a lot of playing around with the best ways of blending it all together. So far the best I've found in PixInsight:
- LinearFit all the frames together against the channel with the lowest noise. In my case, this was the Ha.
- Using pixel math I did a Max(R,Ha) for the red channel and standard for the G and B.
Looking at these comparisons you can see that the nebulosity has lost some of it's pink hue and has gone mostly red. I am still looking for a good way of blending some of the Ha with the blue channel to simulate the hydrogen beta emission.
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