Cocoon Nebula (Prabhakaran)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Cocoon Nebula · IC 5146

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Cocoon Nebula

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Cocoon Nebula

The Cocoon Nebula, or IC 5146, is an emission and reflection nebula located in the constellation Cygnus. It spans about 12 light-years and is situated approximately 4,000 light-years toward the northern constellation of the Swan (Cygnus). The nebula gets its name from its distinct cocoon-like shape, formed by a dense cloud of interstellar dust. The cosmic Cocoon punctuates a long trail of obscuring interstellar dust clouds. At its core lies a young open star cluster called Collinder 470, which emits intense ultraviolet radiation, causing the surrounding hydrogen gas to glow in red and the dust to reflect blue light. The Cocoon Nebula showcases ongoing star formation, with protostellar objects hidden within cocoons of gas and dust. This stunning celestial object offers insights into the processes of stellar birth and evolution.

Dark Nebula
Very Wide Field

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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	7797585
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Cocoon Nebula

Cocoon Nebula

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Cocoon Nebula

Cocoon Nebula

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