Ok been trying a few things. I am happy with the background now and the colour is getting close but I still think it is a bit fluro. I have using
Rob Gendlers image to compare.
Doug I used your tip about saturation of the reds prior to using the Ha as luminosity. No clipping but very close.
James I will try that method and see what transpires.
The first image is the old image and the second is the new image.
thoughts?