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As you can see there is spike at about 500 nm containing both O-III and H-Beta, In singleshot camera those bands are ending up partly to Green and Blue channels!!!There is lots of H-alpha as well, but we are not interested about that, becouse we have separate 7nm H-a filter data. So this is a background and here are few samples what can be archived with that data.
This is a very first test run and there is lots of things to test, but it looks promicing so far.
All images have been taken with QHY8, a sigle shot cooled 6mb astro camera.
Lights: 5x1800s + 15x900s @H-alpha Color data: 5x900s UHC-s filter combined as HaR(Ha)GB
Here is the same method used for the Bubble nebula image
Exposure time is 4h for H-a and 2h with UHC-s filter for RGB. HaR(Ha)GB image is combined from the data. Modified Hubble palette from the same material as the original RGB Palette variation from the same data
I hope, that someone else will test this method and report here about findings.
All comments and opinions are welcome.