M 42, The Orion Nebula (Paul Kent)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: Great Nebula in Orion · M 42 · M 43 · NGC 1976 · NGC 1982 · The star θ1Ori · The star θ2Ori

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M 42, The Orion Nebula

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M 42, The Orion Nebula

M42, The Orion Nebula is one of the brightest regions of star formation as viewed from Earth. Located 1340 light years away, the Orion Nebula shines brightly in the light of ionised hydrogen atoms, amongst others. Hydrogen is the most abundant element in the Universe, and as a result, many gaseous objects emit plenty of Hydrogen light. This is responsible for the pinky/red colour of many gas clouds. The nebula itself is powered by some very hot, young stars right in the core, known as the 'Trapezium'. The brightest star in this association of 6 stars is Theta-1 C, weighing in at 40x that of the sun and a surface temperature of around 40,000 K. The stars output a lot of UV light, which electrons in the surrounding atoms of the nebula absorb and then re-emit. In this photo, we have used filters that isolate the emission from Hydrogen, Oxygen and Sulphur atoms. The 'scalloped' shape of the nebula arises from the strong stellar winds that arise from these incredibly hot, massive stars.

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	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

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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic success
Started	...
Astrometry.net job	1881783
PixInsight job	n/a
PixInsight queue size	n/a
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M 42, The Orion Nebula

M 42, The Orion Nebula

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M 42, The Orion Nebula

M 42, The Orion Nebula

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