Here are 3 example images to show what I was talking about.
Firstly, a straight Ha image using Eta Carina using an RCOS 12.5 inch and STL camera with an Astrodon 6nm Ha filter. I have worked to match the colour assigned to the Ha to match the spectrum example in the link in my article. I think it is pretty close.
http://www.pbase.com/image/103334252
Secondly I got a straight LRGB colour image of the same object/scope/camera:
http://www.pbase.com/gregbradley/image/103334257
And thirdly I added the spectrum matched Ha image above to this
colour image and this is the resulting blend:
http://www.pbase.com/gregbradley/image/103334261
I personally like the resulting blend but this is only one example. I wonder how it will work out with different types of objects imaged.
Time will tell as I begin using this technique.
Greg.