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Nice effort Robert,
OSC cameras with dual band filters can be a bit tricky to colour balance until you get the hang of it. Ha is always going to be the dominant gas shown for two reasons. Number 1 is it is an emission gas meaning it creates its own light as opposed to O2 for example that reflects the blue light from another light source. And secondly O2 is at the same end of the spectrum as sky glow so it’s always harder to extract. With this in mind, be careful how much O2 end of the spectrum you’re chasing as the reality is it should be dimmer. All this said there is definitely a need to balance the colours. If you have already tried to balance the “ black background “ by picking a black area and making sure the values are the same for all three channels then you can also use selective colour in PS to change the tone of each channel. As I said before, the blue end of the spectrum is always going to need some teasing to get the contrast right due to the fact that your sensor simply isn’t going to recieve as much luminance down that end of the spectrum. You can try stretching the Blue and green channels slightly more than the red with curves early on in your processing too. It is a balancing act but it’s something you’ll get used to tackling as part of your work flow. Hope that helps a little. You’re off to a great start.
Cheers
Ryan
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