Cocoon Nebula - IC5146 & Caldwell 19 (Stephen Charnock)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B168 · Cocoon Nebula · IC 5146 · Sh2-125 · VdB147

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Cocoon Nebula - IC5146 & Caldwell 19

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Cocoon Nebula - IC5146 & Caldwell 19

This narrowband image was captured in one session of 10 subs each of Ha, Sii and Oiii each of 360s duration using iTelescope T18 located at Nerpio, Spain. The subs were captured at full moon although geometric separation between IC5146 and the moon was greater than 90degrees. The Oiii imagery showed little nebulosity and was subsequently removed and an artificial green channel was created using the red channel (Ha) and blue channel (Sii). Revision D imagery shows the narrowband imagery using Ha, Oiii and Sii. The other revisions use only the Ha and Sii subs. Pre-Processing was carried out using Astro Pixel Processor. Subsequent post-processing was carried out in Photoshop and Astro Tools.

Original
Final
C
D

C

Description: The original imagery shows the narrowband imagery using Ha, Oiii and Sii. The subsequent revisions use only the Ha and Sii subs. Pre-Processing was carried out using Astro Pixel Processor. Subsequent post-processing was carried out in Photoshop and Astro Tools.

Uploaded: ...

D

Description: This revision shows the original imagery using Ha, Sii and Oiii data. The Oiii data was subsequently deleted.

Uploaded: ...

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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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.

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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.
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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	4923700
PixInsight job	G1BT97I4DM3UDJY55TG7CMA07EDOPOIY
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h53m25s.344
RA (top/left)	21h53m47s.381
RA (top/right)	21h52m14s.466
RA (bottom/right)	21h53m03s.573
RA (bottom/left)	21h54m36s.419

Dec (center)	+47°15′57″.76
Dec (top/left)	+47°28′03″.74
Dec (top/right)	+47°12′00″.19
Dec (bottom/right)	+47°03′52″.80
Dec (bottom/left)	+47°19′52″.22

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Cocoon Nebula - IC5146 & Caldwell 19

Cocoon Nebula - IC5146 & Caldwell 19

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Image Index:

Contribution Index (beta):

Cocoon Nebula - IC5146 & Caldwell 19

Cocoon Nebula - IC5146 & Caldwell 19

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D

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