Sharpless 119 - Clamshell Nebula (James E.)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 68 A Cyg · HD201924 · HD201935 · HD202068 · HD202124 · HD202253 · HD202312 · HD202347 · HD202568 · HD202617 · HD202664 · HD202710 · HD202720 · HD202810 · HD202862 · HD203578 · HD204050 · HD204132 · HD204262 · HD204306 · HD204375 · HD204402 · LBN 383 · LBN 389 · LBN 390 · LBN 391 · LBN 393 · LBN 400 · LBN 401 · LBN 402 · And 18 more.

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Sharpless 119 - Clamshell Nebula

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Sharpless 119 - Clamshell Nebula

Sharpless 119 (the Clamshell Nebula) is a large emission nebula in Cygnus. It is about 3 degrees in diameter and located in close proximity to the North America and Pelican nebulae. It is about 2200 light years away and contains dark dust lanes and several Bok globules.

This nebula is overwhelmingly strong in Ha with some nice SII but is extremely faint in OIII.

Imaged over several nights: Sep 3-5, 19, 2023.

Final
Original
B
C
D

B

Description: Extracted Ha_9.5 hours_denoised

Uploaded: ...

C

Description: Extracted SII_8 hours_denoised

Uploaded: ...

D

Description: Extracted OIII_~9 hours_denoised

Uploaded: ...

Narrowband imaging
ZWO ASI 2600MC PRO
Sharpless2 Objects
The refractors!
NOVAC
N.I.N.A. Users

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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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Status	Advanced success
Started	...
Astrometry.net job	8520632
PixInsight job	7GA8QNU9UOSSNAR01Y5LF9ETF68LFTY4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h19m14s.15
RA (top/left)	21h10m27s.61
RA (top/right)	21h11m43s.83
RA (bottom/right)	21h27m25s.23
RA (bottom/left)	21h27m19s.69

Dec (center)	+43°47′10″.5
Dec (top/left)	+45°55′32″.0
Dec (top/right)	+41°31′50″.9
Dec (bottom/right)	+41°36′31″.9
Dec (bottom/left)	+46°00′30″.9

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Sharpless 119 - Clamshell Nebula

Sharpless 119 - Clamshell Nebula

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Sharpless 119 - Clamshell Nebula

Sharpless 119 - Clamshell Nebula

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D

Sky plot

Histogram

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