Sh2-157 and NGC 7635 The Lobster Claw and Bubble Nebulae (2021 Edition) in SHO Narrowband (Eshan Toorabally)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · NGC 7510 · NGC 7538 · NGC 7635 · PK110-00.1 · Sh2-157 · Sh2-158 · Sh2-159 · Sh2-162

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Sh2-157 and NGC 7635 The Lobster Claw and Bubble Nebulae (2021 Edition) in SHO Narrowband

Link: https://www.instagram.com/p/CT0CEFPIkYs/?utm_medium=copy_link

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Sh2-157 and NGC 7635 The Lobster Claw and Bubble Nebulae (2021 Edition) in SHO Narrowband

Link: https://www.instagram.com/p/CT0CEFPIkYs/?utm_medium=copy_link

I've had a crack at this image before, but the previous effort was hampered by focusing issues. This time, the clouds severely limited my imaging time, but the show must go on! This version is in a Hubble palette colour scheme...I've included a "natural blend" palette version as a revision.

Thanks for looking!

The Lobster Claw Nebula, or Sharpless 157 (Sh2-157), is an emission nebula and, according to some sources, is between 8,000 and 17,000 light-years from Earth between the Cassiopeia and Cepheus constellations. There are several interesting features in the image, not least the Bubble Nebula, NGC 7635, a HII region emission nebula which lies 7,000-11,000 light-years from us and is a shell surrounding, and excited by, the star SAO 20575. Also in the frame are the Wolf-Rayet massive star WR 157, an open cluster of stars, NGC 7510 and the nebula NGC 7538, which is home to the largest yet discovered protostar, 300 times the size of our solar system.

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Description: This version is a "natural blend" narrowband palette

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The refractors!
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ZWO ASI1600MM/QHY163M
UK Astro-Imaging
Southern Hemisphere Astro
Narrowband imaging
Suburban Astrophotography
Sharpless2 Objects

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Status	Advanced success
Started	...
Astrometry.net job	4988816
PixInsight job	OHGDR7DGB01ZOE5H3663NOUO2FWJBXCL
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	23h17m11s.868
RA (top/left)	23h23m38s.265
RA (top/right)	23h23m52s.699
RA (bottom/right)	23h10m19s.945
RA (bottom/left)	23h10m57s.730

Dec (center)	+60°39′00″.54
Dec (top/left)	+59°34′57″.51
Dec (top/right)	+61°42′50″.92
Dec (bottom/right)	+61°41′43″.54
Dec (bottom/left)	+59°33′59″.43

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Sh2-157 and NGC 7635 The Lobster Claw and Bubble Nebulae (2021 Edition) in SHO Narrowband

Sh2-157 and NGC 7635 The Lobster Claw and Bubble Nebulae (2021 Edition) in SHO Narrowband

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Sh2-157 and NGC 7635 The Lobster Claw and Bubble Nebulae (2021 Edition) in SHO Narrowband

Sh2-157 and NGC 7635 The Lobster Claw and Bubble Nebulae (2021 Edition) in SHO Narrowband

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