Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Great Nebula in Orion  ·  IC 430  ·  M 42  ·  M 43  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  NGC 1999  ·  The star 42Ori  ·  The star 45Ori  ·  The star 49Ori  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri  ·  The star υOri
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The Great Nebula in the Sword of Orion, Roger Clark
The Great Nebula in the Sword of Orion
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Description

Canon 7D Mark II 20-megapixel digital camera and 300 mm f/2.8 L IS II at f/2.8. Twenty seven

61-second exposures at ISO 1600 were added (27.5 minutes total exposure) for the main image, then for the brighter core of the nebula, 4 32-second, 4 10-second, 8 4-second, and 6 2-second exposures. No dark frame subtraction, no flat fields. Tracking with an astrotrac. The outer orange nebulosity is very faint, so this image demonstrates that the 7D Mark II is an amazing low light camera for it to record so much detail in this short exposure. More info and methodology at:

http://www.clarkvision.com/galleries/gallery.astrophoto-1/web/orion.nebula.m42_61,10,4,2sec_c11.21.2014.0J6A1631-1657-SigAv.h-b5x5s.html

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The Great Nebula in the Sword of Orion, Roger Clark