Hi,
I have some free time so decided to go back and process this (as best as i can) as last time the frames didn't really line up.
Anyway it is Luminance combined with Ha and HaRed Green Blue for colour. Consists of 12 hours Ha, 6 hours Luminance, and 2 1/2 hours each colour channel. Taken under beautiful central Australian dark skies.
For a higher resolution image click here for my flickr account:
https://www.flickr.com/photos/134809...posted-public/
Thanks
Mark