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Great Nebula
in Orion The Great Nebula resides near the center of Orion's sword, a fuzzy patch of light visible to the naked eye. The width of the nebula is about one degree or twice the diameter of a full moon. Here the Great Nebula, Messier object M42 is the flame-like structure on the right; the smaller puff on the left is another nebula known as M43. Illuminated by ultraviolet light from a few central stars, these clouds of hydrogen gas appear reddish in exposures of 20-30 seconds. |
| This image was
taken from Manastash Ridge around 4:00 am on the morning of October 10, 2001.
848 mm focal length, f/8 |