IC5146 - The Cocoon Nebula (jmarinotero)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B168 · Cocoon Nebula · HD206887 · HD207350 · HD207529 · HD207608 · HD207662 · HD207886 · HD207991 · HD208362 · HD208394 · IC 5146 · LBN 424 · LDN 1030 · LDN 1031 · LDN 1035 · LDN 1040 · LDN 1042 · LDN 1045 · LDN 1046 · LDN 1047 · LDN 1052 · LDN 1055 · PGC 101349 · PGC 101350 · PGC 167524 · PGC 167526 · PGC 167533 · PGC 167556 · PGC 167561 · And 17 more.

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IC5146 - The Cocoon Nebula

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IC5146 - The Cocoon Nebula

IC5146, also known as the Cocoon Nebula, is a reflection / emission nebula in the constellation Cygnus. In this field you can also see B158, a dark nebula that surrounds the cluster and extends like a tail, leading the viewer to the brightest portion of the image. This area is a star forming region with hundreds of young stellar objects, some of them several times the mass of our own sun.

This image was taken unfiltered, and from a very light polluted location. This is the second light with the Takahashi Epsilon 130D, which is a very fast f/3.3. In order not to blow the stars I had to limit exposures to 30 seconds. And added over 1400 of them, which turned out to be a bit of a preprocessing challenge.

Imaged with N.I.N.A.
Light Polluted skies
NOVAC
Takahashi Epsilons
ZWO ASI 2600MC PRO
Trevinca Skies

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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
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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	Advanced success
Started	...
Astrometry.net job	6048178
PixInsight job	QZWLZQKOSNSTNYGOTN0LW25C6CGQHWDO
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h49m37s.19
RA (top/left)	21h41m50s.31
RA (top/right)	21h45m40s.39
RA (bottom/right)	21h57m02s.30
RA (bottom/left)	21h53m50s.24

Dec (center)	+47°43′02″.3
Dec (top/left)	+48°59′46″.1
Dec (top/right)	+46°01′54″.6
Dec (bottom/right)	+46°24′35″.2
Dec (bottom/left)	+49°23′41″.2

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IC5146 - The Cocoon Nebula

IC5146 - The Cocoon Nebula

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IC5146 - The Cocoon Nebula

IC5146 - The Cocoon Nebula

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