OSC RGB and Dual Narrowband Combination

Hi @Aris Pope,

I am no expert (but did twice comine Ha to RGB in my pictures) and I am using mono, but I think good start would be to check NBRGBCombination script ( Script - Utilities - NBRGBCombination).

Another way is to use PixelMath for each channel (adding Ha to red and Oiii to blue/green). I think most people will say this is not the right approach but for me it was the easiest and I got most control, how much of Ha to add, example for Ha to red channel (I imagine Oiii woould be similar):


Where 1.2 is some factor I usually play around with and Ha is label of my Ha image (obviously)

I'm sure there are better ways of doing this. But it works. I like using Bill's Add Ha to RGB formula. 

In Pixinsight

1 use Image Integration on page one of Processes
2 Add Files. It wants 3 images so add the RGB twice and Dual Band once. Or visa versa. 
3 Apply Global. 

Hope this helps