Orion m42 (Brisset)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: Great Nebula in Orion · M 42 · M 43 · NGC 1973 · NGC 1975 · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1982 · The star 42Ori · The star 45Ori · The star θ1Ori · The star θ2Ori · The star ιOri

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Orion m42

La nébuleuse d'Orion, aussi connue sous le nom de M42 ou NGC 1976, est une nébuleuse en émission/réflexion au cœur de la constellation d'Orion. Elle est la nébuleuse diffuse la plus luisante, visible à l'œil nu dans un ciel de nuit sans pollution lumineuse et peut être facilement vue avec des jumelles. Elle se répand sur un pan de ciel de 66 × 60 minutes d'arc, soit quatre fois plus que la pleine lune. La nébuleuse a une taille d'environ 33 années-lumière. La nébuleuse d'Orion est la partie principale d'un nuage de gaz et de poussières appelé le nuage d'Orion. Ce nuage s'étend sur près de la moitié de la constellation et contient en plus la Boucle de Barnard et la célèbre nébuleuse de la Tête de Cheval. Il aura fallu attendre 2007 pour s'apercevoir que la nébuleuse se trouve à environ 1 350 années-lumière de la Terre au lieu des 1 500 années-lumière jusque-là estimées. Elle contient un amas ouvert très jeune renfermant de nombreuses étoiles.

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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	508495
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Orion m42

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