Ha Substition for Luminance Combining
I ahave developed a new technque for combingin Ha data with the RGB data using a method in PixInsight to subtract the Luminnance data from an image and substitute Ha data in its place. The tutorial is here: http://pixinsight.com/forum/viewtopic.php?t=562It is also possible I believe to perform this technique using other image processing programs that let you extract Luminance and then break the image into R,G,B to be recombined as a HaRGB image.
Jack Harvey