Orion region in H alpha with a 28 mm lens at the 2012 Alberta All Star Party.
Details
Location - Painted Pony Resort near Rodeo NM 2012-02-22.
Conditions - clear and 4 deg C.
28mm f/2.8 lens on modified Canon T3i camera with an Astronomic 12nm H alpha filter on an Astrotrac mount.
Exposure 9 x 600s at f/3.5 and ISO 1600 plus 15 x 300s at f/3.5 and 3200.
Processed in Images Plus and Photoshop