Guys keep em coming! These are excellent. Many thanks for showing me the potential of these images.
I've uploaded 2 new versions.
This one is saved as a 32bit file from DSS.
https://www.dropbox.com/s/32jij8d8d5...b_rational.TIF
This one is from the night after, using my 6D this time with a CLS-XL filter. Exposure time was ~1.5hours, 2hours less than the 600D version. No dark frames, but I had a go at bias and flats (first time).
https://www.dropbox.com/s/uwn9spy2zs...0140603_v2.TIF
Best of luck!