Markarian's Chain and M87 (Tim Stone)

Markarian's Chain and M87

Straddling the boundary between Virgo and Coma Berenices, Markarian's Chain is a striking galactic formation. Seen from our perspective, it marks a beautifully smooth curve, quite likely simply the result of our relative orientation. Most of these galaxies, but not all of them, are actually in proximity to each other, sharing a common redshift. Two of them, NGC 4406 (M86) and NGC 4374 (M84), along with the nearby NGC4486 (M87) are astonishingly massive elliptical galaxies. M84 has a 300 million solar mass black hole.

M87 harbors a 3.6 billion solar mass black hole behemoth, which produces a huge jet of high energy particles. This jet is so bright it is easily photographed using amateur equipment, and it has been widely studied at many wavelengths and over a relatively long timeframe. Time lapse movies have been made of knots in the jet as they move away at seemingly impossible speeds greater than light.

Image acquired at Prairie Sky Observatory, a facility of Twin City Amateur Astronomers (tcaa.us).

Original
B
Final
C

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.

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Astrometry.net job	n/a
PixInsight job	n/a
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