Quote:
Originally Posted by Muzfox
Lol I think cooked chicken pallet heh. The L-Extreme puts the HA into the red channel and the O3 into the Green. The blue is mainly just remnants and quite noisy, you don't really want it. So chuck the blue, and create a new synthetic one made up of 60% red + 40% green using pixel math in Pixinsight. As the green is 03 you end up putting it into Blue with the LRGB combination process. Colours come out mainly orange with light blue on the O3 if you have balanced the channels well. From there it's curves to bring out the colours fully.
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Sounds about right. Ha is 656nm just above red and Oiii is turquoise at 500nm so it's both blue and green as it overlaps. The filter being duo band you could use the Ha (red) Ha/Oiii(50/50 green) and Oiii (blue) so you end up with a bicolor which is essentially the same as shooting Ha and Oiii separately. That should give you better contrast, details and less posterization.
Or you can pick the real colors next to the bandpass from Young's spectrum (attached) in PS with the eyedropper and look for the HSL values then blend the Hue/Saturation layers as screen in your stack. Then you should get accurate distribution of all the colors.