My first attempt at M16 in Ha, a precursor to OIII and SII to come. Shot with my mono cooled Canon 450D. Consists of 21 subs of 360" each, perhaps too short judging by the histogram. Processed in DSS and minimal Photoshop. Scope was the Skywatcher MN190 (f5.3).
http://www.astrobin.com/248565/
Nicer big version here:
http://www.astrobin.com/full/248565/None/
Pathetic thumbnail is below.