Interesting. I had assumed you'd use the whole Ha data and put it all in one channel, all OIII in another channel etc.
Using the above method, what do you do if you want to add SII? It's primarily red also. If you were to only use the blue or green from it, be very faint? Or do you take from it's red channel only, and put that in the synthetic green channel or whatever? As I said, I had assumed you'd put it all in one channel.
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