The Great Orion Nebula (M42) (Pedro Zampella)

The Great Orion Nebula (M42)

Link: https://www.instagram.com/p/CMHar8qF5M2/

The Great Orion Nebula (M42)

Link: https://www.instagram.com/p/CMHar8qF5M2/

Probably one of the most famous, and without any doubt, the most captured nebula in the sky.

This nebula is located in the Orion Molecular Cloud, inside the Orion constellation, more specifically, in the hunter’s sword. It is about 1,350 light years from Earth, and has a radius of 12 light years. With an apparent magnitude of +4, it is visible in fairly dark skies as a slight stain around the Becklin Star.

It was discovered in 1610 by Nicolas-Claude Fabri de Peiresc. The fact that this nebula is so easy to identify on plain sight, and that no one registered it before, has lead to speculate that maybe it’s nebulosity brightness actually increased in the early 1600s to what it is now. Is was added to the Messier Catalogue in 1771.

In 1880, Henry Draper made the first ever photography of a nebula when he captured 51 minutes of data from M42, becoming the first ever target of Deep Sky Astrophotography.

Even if it is a very common target for astrophotographers, it is not as easy to capture as most people would think: This nebula has very bright regions next to very dim zones, making it particularly hard to capture with a single exposure length. Applying HDR is practically mandatory.

Please note: The following tables are updated every 24 hours.

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.

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The Great Orion Nebula (M42)

The Great Orion Nebula (M42)

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The Great Orion Nebula (M42)

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