M42 - The Gem in Orion. 14 January 2012
I was going to have another crack at the horsehead tonight, but the high cloud was still about so I went for this instead (Alnitak doesn't like high cloud). Glad I did really - I've never got so much out of M42. Had to stop at 35 minutes because the clouds rolled in, but I had planned for 90 minutes - shame. First process, slightly hurried. I'll do it again when I get the chance.
Nikon D70 modded, iso1600, Baader Neodymium Filter
10 x 5 secs (core)
35 x 60 secs
Darks, flats and bias
Stacked and processed in DSS and CS5, with help from Noel's Tools
More time added and reprocessed here