The Great Orion Nebula (M42) at top of this wide field image is a small part of a much larger cloud of gas and dust that extends over 10 degrees, covering half of the constellation Orion. This much larger nebula is known as the Orion Molecular Complex.
The OMC extends several hundreds of light-years, and includes Barnard's Loop, and the massive star forming region of Horse head and Flame Nebulae (NGC 2024) seen at bottom of image.
Imaged 7 January 2012, 10pm
Canon 70-200 @ f/2.8? Piggy-backed on Celestron CPC.
Focal Length 200mm
Stacked image – 40 x 15 sec with Deep Sky Stacker