Group Challenge - Horsehead or Witch Head Nebula  
Witch Head Nebula - IC 2118

Witch Head Nebula - IC 2118(Matts Sporre)

Acquisition Date : December 28 to 29, 2008. In Djura, Sweden
Camera : Canon 40D Baader modified
Camera Settings : ISO1600; 68x240s@F2.8; 46x120s@F4; 46x240s@F4; 1x180s@F4 (!) In total a little bit over 9hrs.
Telescope : Canon 200mm F2.8 @F2.8 day one and @F4 day 2.
Mount : Astrotrac T320
Adapter / Prime / Afocal / Other : The Astronomik CLS clip in filter was used during one run day 1 (forgott to remove it ;-)
Processing Package / Processing Applied : Aquired in MaximDL (Light and Dark frames) and Canon EOS Utility (Flat frames). Stacked and calibrated in Deep Sky Stacker. Processed in CS2 (GradXT, Noise Ninja, Curves, Levels, Filters, and Noel Carboni's Astronomy Tools)
Web Site : http://www.istarion.net/
NOTES : I went to my mothers place in Djura ca 300km north of Stockholm - the temperature varied between -14C to -18C!

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