Cosmic Clamshell SH2-119 (Timothy Straub)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 68 A Cyg · HD202124 · HD202253 · HD202312 · HD202347 · HD202617 · HD202710 · HD202810 · HD202862 · HD203578 · HD204050 · HD204132 · HD204262 · LBN 383 · LBN 389 · LBN 390 · LBN 391 · LBN 393 · LBN 400 · LBN 401 · LBN 402 · LBN 404 · LDN 942 · LDN 943 · LDN 944 · LDN 946 · LDN 947 · LDN 948 · LDN 949 · LDN 951 · And 6 more.

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Cosmic Clamshell SH2-119

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Cosmic Clamshell SH2-119

The Cosmic Clamshell has the official title Sharpless-2-119.
Sharpless' catalog mostly concentrates on regions of glowing Hydrogen gas (H alpha), and many of these objects are in Downtown Milky Way.
This object does not get as much love because just 4 moon widths away (2 degrees) is the North America Nebula. That is a shame, because it is almost 4 degrees x 3 degrees large (according to the calculated field of view of my imaging software). The gas is illuminated by the bright star in the middle 68 Cygnii.
I took this over several nights. In all this is a stack of 110 x 300 second frames. In more reasonable terms 9 hours and 10 minutes total exposure time.

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Distribution of astrophotographers

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	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	Advanced success
Started	...
Astrometry.net job	8515189
PixInsight job	1BENI0QNY0XIWRQI9ZIG762XW853BILA
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h19m07s.77
RA (top/left)	21h27m20s.55
RA (top/right)	21h24m57s.34
RA (bottom/right)	21h11m19s.93
RA (bottom/left)	21h12m57s.41

Dec (center)	+43°52′22″.8
Dec (top/left)	+45°20′41″.1
Dec (top/right)	+42°05′45″.3
Dec (bottom/right)	+42°21′54″.3
Dec (bottom/left)	+45°38′04″.3

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Cosmic Clamshell SH2-119

Cosmic Clamshell SH2-119

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Cosmic Clamshell SH2-119

Cosmic Clamshell SH2-119

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