IC434 Horsehead Nebula (Paresh Kokate)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 46 Ori) · 48 Ori · 50 Ori) · Flame Nebula · IC 431 · IC 432 · IC 434 · IC 435 · NGC 2023 · NGC 2024 · Orion B · Part of the constellation Orion (Ori) · The star Alnilam (ε Ori · The star Alnitak (ζ Ori · The star σ Ori

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IC434 Horsehead Nebula

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IC434 Horsehead Nebula

The Horsehead Nebula is a famous dark nebula located in the constellation Orion.The nebula lies at an approximate distance of 1,375 light-years.The swirling clouds of gas and dark dust that form the nebula have the shape of a horse’s head, giving the nebula its name. The dark dust clouds are made visible by the pinkish glow of hydrogen gas located behind the nebula.In images, the darkness of the Horsehead Nebula stands out against the emission nebulosity in the background. The red glow of the ionized hydrogen gas behind the nebula is caused by the nearby bright star Sigma Orionis, which partly illuminates the Horsehead.Sigma Orionis is a multiple star system composed of exceptionally hot stars of the spectral types O, B, and A. The brightest components are over 10 times more massive than the Sun and destined to go out as supernovae when they reach the end of their short life cycles. The stars are less than 2 million years old.
The brighter star visible in this area of the sky in images is Alnitak (Zeta Orionis). The hot blue supergiant is located in the foreground and is not related to the Horsehead.

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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	9514431
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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IC434 Horsehead Nebula

IC434 Horsehead Nebula

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IC434 Horsehead Nebula

IC434 Horsehead Nebula

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