I used the same workflow that I used yesterday for the Tadpole Nebula to add OIII and SII data to my Ha Rosette image:
This is a 19hour exposure composed of 20xHa, 19xOIII and 19xSII (each 20 minutes).
I played more with the coloring. First I used the workflow from Bob Franke to enhance the colors:
Then I used Richard Crisp's Synthetic Coloring:
I think I prefer the first one.