Stephans Quintet (gallikepler)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: HD213596 · HD213643 · HD214576 · HD214667 · NGC 7315 · NGC 7317 · NGC 7318 · NGC 7319 · NGC 7320 · NGC 7331 · NGC 7333 · NGC 7335 · NGC 7336 · NGC 7337 · NGC 7338 · NGC 7340 · NGC 7343 · Stephan's Quintet

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Stephans Quintet

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Stephans Quintet

Scope: TOA 130 with flattener
Camera: ASI 2400MC Pro
Mount: AP1100 unguided with APPM model
OSC 43 hour exposure
Acquired with NINA
Processed in PixInsight

In the middle of the frame, the colliding galaxies NGC 7318A and 7318B are hard to miss. To its right is NGC 7319 with its long tentacle like spiral arms. The bluish NGC 7320, 35 million light years away is not a physical member of the group. NGC 7317 is visible to the left of NGC 7318A/B and the nice target like NGC 7320C is to the right of NGC 7319. The four galaxies namely NGC 7317, NGC 7318A/B, NGC 7319 are 300 million light years away!

In the right corner is the "Milky Way's twin", NGC 7331. This jewel was discovered by renowned astronomer Sir William Herschel, in 1784. One curious feature of the galaxy is its central core or bulge, which rotates in the opposite direction than its disk! The name "Deer Lick" is thought to be attributed to an amateur astronomer, naming it after a mountain site where he first observed it.

In the neighborhood of NGC 7331 are four other members, affectionately referred to as the "fleas": the lenticular or unbarred spirals NGC 7335 (floating above the disk of NGC 7331) and NGC 7336, the barred spiral galaxy NGC 7337 (with clear visible spiral arms) and the elliptical galaxy NGC 7340 above it. These galaxies lie at distances of approximately 332, 365, 348 and 294 million light years, respectively.

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B

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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Unknown

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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
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	8495813
PixInsight job	T9QJUC8FYQ89H7PW02MBKW97JD5M1U69
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h36m00s.56
RA (top/left)	22h34m38s.69
RA (top/right)	22h41m57s.44
RA (bottom/right)	22h37m24s.98
RA (bottom/left)	22h30m05s.57

Dec (center)	+33°57′40″.0
Dec (top/left)	+32°44′48″.4
Dec (top/right)	+34°09′32″.10
Dec (bottom/right)	+35°10′26″.9
Dec (bottom/left)	+33°44′43″.2

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Stephans Quintet

Stephans Quintet

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