A Clamshell in Cygnus, Sh2-119 (Nico Augustin)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 68 A Cyg · HD202124 · HD202253 · HD202312 · HD202617 · HD202710 · HD202720 · 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 12 more.

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A Clamshell in Cygnus, Sh2-119

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A Clamshell in Cygnus, Sh2-119

This is the emission nebula Sh2-119 aka the Clamshell Nebula in Cygnus. Often overlooked, it’s only a few degrees away from the North America and Pelican nebula. Dimmer than its famous neighbors, it is still a huge and exciting target. Here I only have 4 hrs of Ha-OIII dual narrowband data from Bortle 7-8 skies and terrible seeing conditions. I didn’t get enough OIII signal to work out a good HOO-composite, but, despite the current imaging conditions here in KAUST (Saudi Arabia), with night temperatures of ≈30°C and more than 80% humidity, the result is better than expected 😉

Original
Final
B

B

Description: A new processing workflow was applied, as described in my California Nebula image.

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	Image of the day	Top pick	Top pick nominations	Total submitted
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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.
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Status	Advanced success
Started	...
Astrometry.net job	6532446
PixInsight job	M33N7EGHV5DFS0Q2WZ3MD95W5BJSP87A
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h19m09s.80
RA (top/left)	21h26m44s.76
RA (top/right)	21h11m54s.65
RA (bottom/right)	21h11m59s.30
RA (bottom/left)	21h26m01s.52

Dec (center)	+43°43′28″.5
Dec (top/left)	+45°18′51″.3
Dec (top/right)	+45°21′46″.8
Dec (bottom/right)	+42°06′15″.2
Dec (bottom/left)	+42°03′35″.7

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A Clamshell in Cygnus, Sh2-119

A Clamshell in Cygnus, Sh2-119

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A Clamshell in Cygnus, Sh2-119

A Clamshell in Cygnus, Sh2-119

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