Markarian's Chain (Alex Peruzzato)

Celestial hemisphere: Northern · Constellation: Virgo (Vir) · Contains: 13.56 · 521 Brixia · HD108137 · HD108272 · HD108348 · HD108422 · HD108577 · HD108593 · HD108613 · HD108614 · IC 3303 · IC 3311 · IC 3344 · IC 3349 · IC 3355 · IC 3363 · IC 3382 · IC 3388 · IC 3393 · IC 794 · M 84 · M 86 · NGC 4374 · NGC 4387 · NGC 4388 · NGC 4402 · NGC 4406 · NGC 4407 · NGC 4413 · NGC 4425 · And 18 more.

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Markarian's Chain

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Markarian's Chain

Markarian's Chain is a stretch of galaxies that forms part of the Virgo Cluster. When viewed from Earth, the galaxies lie along a smoothly curved line. Charles Messier first discovered two of the galaxies, M84 and M86, in 1781. The other galaxies seen in the chain were discovered by William Herschel and are now known primarily by their catalog numbers in John Louis Emil Dreyer's New General Catalogue, published in 1888. It was ultimately named after the Soviet astrophysicist, Benjamin Markarian, who discovered their common motion in the early 1960s. Member galaxies include M84 (NGC 4374), M86 (NGC 4406), NGC 4477, NGC 4473, NGC 4461, NGC 4458, NGC 4438 and NGC 4435.

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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
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Northern lights
Noctilucent clouds
Landscape
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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	...
PixInsight job	U3LXE9J7GSDVYPH2JTENZLIYSPLYFX7B
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h27m44s.00
RA (top/left)	12h30m46s.35
RA (top/right)	12h30m45s.30
RA (bottom/right)	12h24m40s.35
RA (bottom/left)	12h24m44s.31

Dec (center)	+13°00′28″.1
Dec (top/left)	+11°54′08″.7
Dec (top/right)	+14°07′00″.4
Dec (bottom/right)	+14°06′38″.1
Dec (bottom/left)	+11°53′46″.0

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