Orion region with a 28 mm lens at the 2012 Alberta All Star Party. This is an H alpha enhanced color image formed by combining a normal color one with an H alpha filtered one.
Details
Location - Painted Pony Resort near Rodeo NM 2012-02-21 and 22.
Conditions - clear and 4 deg C.
Color image
28mm f/2.8 lens on Canon T3i camera on an Astrotrac mount.
Exposure 23 x 120s at f/3.5 and ISO 800 with 9 darks and 4 flats.
H alpha image
28mm f/2.8 lens on modified Canon T3i camera with an Astronomic 12nm H alpha filter.
Exposure 9 x 600s at f/3.5 and ISO 1600 plus 15 x 300s at f/3.5 and 3200.
Both images were processed in Images Plus and Photoshop and combined using Registar.