NGC 7331 and IFN (Darius Kopriva)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: NGC 7315 · NGC 7317 · NGC 7318 · NGC 7319 · NGC 7320 · NGC 7331 · NGC 7333 · NGC 7335 · NGC 7336 · NGC 7337 · NGC 7338 · NGC 7340 · Stephan's Quintet

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NGC 7331 and IFN

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NGC 7331 and IFN

NGC 7331, also known as Caldwell 30, is an unbarred spiral galaxy about 40 million light-years (12 Mpc) away in the constellation Pegasus. It was discovered by William Herschel in 1784. NGC 7331 is the brightest galaxy in the field of a visual grouping known as the NGC 7331 Group of galaxies. In fact, the other members of the group, NGC 7335, 7336, 7337 and 7340, lie far in the background at distances of approximately 300-350 million light years.

The galaxy appears similar in size and structure to the Milky Way, and is sometimes referred to as "the Milky Way's twin". However, discoveries in the 2000s regarding the structure of the Milky Way may call this similarity into doubt, particularly because the latter is now believed to be a barred spiral, compared to the unbarred status of NGC 7331. In spiral galaxies the central bulge typically co-rotates with the disk but the bulge in the galaxy NGC 7331 is rotating in the opposite direction to the rest of the disk. In both visible light and infrared photos of the NGC 7331, the core of the galaxy appears to be slightly off-center, with one side of the disk appearing to extend further away from the core than the opposite side.

Southern Hemisphere Astro

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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	8351440
PixInsight job	RH2DOE60WCRPHPDTWAUAJZLJIW0K9YU6
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h36m43s.20
RA (top/left)	22h38m35s.70
RA (top/right)	22h38m37s.26
RA (bottom/right)	22h34m48s.61
RA (bottom/left)	22h34m50s.40

Dec (center)	+34°12′48″.4
Dec (top/left)	+33°36′29″.1
Dec (top/right)	+34°49′04″.4
Dec (bottom/right)	+34°49′02″.9
Dec (bottom/left)	+33°36′29″.9

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NGC 7331 and IFN

NGC 7331 and IFN

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NGC 7331 and IFN

NGC 7331 and IFN

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