Lobster's Claw, Bubble Nebula and Friends (2022 Edition) in Dual-Narrowband (Eshan Toorabally)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 4 Cas · Bubble Nebula · HD218997 · HD219286 · HD219287 · HD219460 · HD219634 · HD219854 · HD220016 · HD220056 · HD220057 · HD220074 · HD220102 · HD220130 · HD220167 · HD220180 · HD220369 · HD220760 · HD220770 · HD240233 · HD240244 · HD240245 · HD240248 · HD240250 · HD240252 · HD240253 · HD240256 · HD240264 · HD240267 · HD240290 · And 32 more.

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Lobster's Claw, Bubble Nebula and Friends (2022 Edition) in Dual-Narrowband

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Lobster's Claw, Bubble Nebula and Friends (2022 Edition) in Dual-Narrowband

My 2022 attempt at this region of space...this time with an APS-C sensor, I've captured a few more DSOs.

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.

The main new DSO I've captured this year is the open cluster, M52.

Thank you for looking!

UK Astro-Imaging
CMOS Imagers
Sharpless2 Objects
Imaged with Voyager
Cloudy Nights
Suburban Astrophotography
The refractors!
Southern Hemisphere Astro
Narrowband imaging
ZWO ASI 2600MC PRO

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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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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	6228070
PixInsight job	4DXODEYAQCJHKQUVZT2ZPIVNAXAN49QR
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h17m58s.11
RA (top/left)	23h25m49s.26
RA (top/right)	23h26m38s.45
RA (bottom/right)	23h09m19s.56
RA (bottom/left)	23h10m06s.36

Dec (center)	+60°49′03″.7
Dec (top/left)	+59°16′48″.8
Dec (top/right)	+62°19′14″.1
Dec (bottom/right)	+62°19′28″.5
Dec (bottom/left)	+59°16′58″.3

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Lobster's Claw, Bubble Nebula and Friends (2022 Edition) in Dual-Narrowband

Lobster's Claw, Bubble Nebula and Friends (2022 Edition) in Dual-Narrowband

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Lobster's Claw, Bubble Nebula and Friends (2022 Edition) in Dual-Narrowband

Lobster's Claw, Bubble Nebula and Friends (2022 Edition) in Dual-Narrowband

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