M42 (Bruce Rohrlach)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: Great Orion Nebula · Lower Sword · M 42 · M 43 · Mairan's Nebula · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1982 · Orion Nebula · The star θ1Ori · The star θ2Ori · The star ιOri · the Running Man Nebula

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M42

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M42

My third attempt on the Great Nebula in Orion, taken during a night of better seeing (in the middle of a high pressure weather system). Besides better seeing, I have stacked more images to improve on the signal-to-noise ratio, and have processed differently to further enhance the wispy shreds of nebulosity that extend further. The core of the nebula is still blown out (exposure-wise) due to the light of the trapezium stars that are embedded and lost in the core white area.

The brightest star in the image is Nair Al Saif, a white primary binary star with a luminosity 14,000 times the luminosity of the sun. Nair Al Saif is also a "run-a-way" star, kicked out of the trapezium cluster by a close encounter with another pair of binary stars around 2.5 million years ago.

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape
Artificial satellite

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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