Stephan's Quintet (Michel Makhlouta)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: NGC 7317 · NGC 7318 · NGC 7319 · NGC 7320 · Stephan's Quintet

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Stephan's Quintet

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Stephan's Quintet

Stephan's Quintet is a visual grouping of five galaxies of which four form the first compact galaxy group ever discovered. The brightest member of the visual grouping (and the only non-member of the true group) is NGC 7320.

Four of the five galaxies in Stephan's Quintet form a physical association, a true galaxy group, Hickson Compact Group 92, and will likely merge with each other.

NGC 7320 is closer to Earth, located at 40 million light-years from our planet. The other members of the quintet reside 290 million light-years away in the constellation Pegasus.

Aside from the quintet galaxies (NGC 7317, NGC 7318a and NGC7318b, NGC7319, NGC7320c) and the intruding NGC7320, there's a faint galaxy in this image in the lower right side of the image, called LEDA 141041.

This is not the best image out there, but I've come to terms with the limits of my skies at this focal length. I "binned" the image to 2x2 in post-processing. What the image lacked in resolution, the story of the galaxies in it compensated for it.

Clear skies and stay safe!

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
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	5110530
PixInsight job	UWSJZU7T8SKKJGUYDDCX4GXH60EM2XFL
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h36m02s.189
RA (top/left)	22h35m11s.215
RA (top/right)	22h35m36s.246
RA (bottom/right)	22h36m53s.430
RA (bottom/left)	22h36m28s.153

Dec (center)	+33°57′49″.76
Dec (top/left)	+34°03′12″.54
Dec (top/right)	+33°47′16″.24
Dec (bottom/right)	+33°52′25″.24
Dec (bottom/left)	+34°08′22″.39

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Stephan's Quintet

Stephan's Quintet

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Image Index:

Contribution Index (beta):

Stephan's Quintet

Stephan's Quintet

Equipment

Acquisition details

Description

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Sky plot

Histogram

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