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

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 68 A Cyg · HD201701 · HD201702 · HD201733 · HD201749 · HD201870 · HD201924 · HD201935 · HD202068 · HD202124 · HD202253 · HD202312 · HD202347 · HD202568 · HD202617 · HD202664 · HD202710 · HD202720 · HD202810 · HD202862 · HD203578 · HD204050 · HD204132 · HD204171 · HD204262 · LBN 383 · LBN 389 · LBN 390 · LBN 391 · LBN 393 · And 34 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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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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Status	Advanced success
Started	...
Astrometry.net job	6353587
PixInsight job	EUBRWS7JTU2KX5OUYS9N80AF6VS7N9X8
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h18m04s.27
RA (top/left)	21h26m56s.40
RA (top/right)	21h09m35s.17
RA (bottom/right)	21h09m50s.90
RA (bottom/left)	21h25m57s.41

Dec (center)	+43°58′31″.6
Dec (top/left)	+46°08′20″.8
Dec (top/right)	+46°11′09″.5
Dec (bottom/right)	+41°46′18″.10
Dec (bottom/left)	+41°43′47″.0

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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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