SH2 119 - The Clamshell Nebula (Richard McInnis)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 68 A Cyg · HD202253 · HD202312 · HD202347 · HD202617 · HD202710 · HD202810 · HD202862 · HD203578 · HD204050 · 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 · LDN 952 · LDN 953 · LDN 968 · And 4 more.

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SH2 119 - The Clamshell Nebula

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SH2 119 - The Clamshell Nebula

Here’s another attempt at processing this very challenging target. This is definitely one of the more challenging target to acquire and process.

This is Sh2-119 - The Clamshell Nebula, a very faint nebula located next to the more popular North America & Pelican Nebulae in the constellation Cygnus, around 2,200 light years away. All three signals (S, H, & O) are quite faint. Nevertheless the beauty of the target makes it all worth it. This version attempts to get more of an actual “clamshell” color palette. Hope you enjoy!

Askar FRA400 f/5.6, ZWO 2600mm pro cooled to -10°C and Gain 100, ASIAIR, EAF, EQ6R Pro, ZWO 36mm EFW, Antlia 3nm SHO filters. 40 hours of 5 min subs. Shot from my backyard, Bortle 8. Processed in Pixinsight.

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Status	Advanced success
Started	...
Astrometry.net job	8501153
PixInsight job	TYXL1OEJSY2A27XSWI99FBH1WUFJ7JVT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h18m30s.40
RA (top/left)	21h11m47s.63
RA (top/right)	21h23m45s.47
RA (bottom/right)	21h25m34s.38
RA (bottom/left)	21h12m55s.56

Dec (center)	+43°55′44″.9
Dec (top/left)	+42°20′10″.6
Dec (top/right)	+42°09′51″.8
Dec (bottom/right)	+45°29′46″.9
Dec (bottom/left)	+45°40′38″.2

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SH2 119 - The Clamshell Nebula

SH2 119 - The Clamshell Nebula

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SH2 119 - The Clamshell Nebula

SH2 119 - The Clamshell Nebula

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