M89 / M90 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Virgo (Vir) · Contains: IC 3540 · IC 3574 · IC 3583 · IC 3586 · M 89 · M 90 · NGC 4552 · NGC 4569

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M89 / M90

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M89 / M90

This image captures 2 Messier objects - M89 (lower left) and M90 (upper right), both located in the Virgo Cluster of galaxies. M89 is an elliptical galaxy which appears almost perfectly spherical in shape, which is unusual because other galaxies of this type are elongated. Although it is not much to look at, it contains over 100 billion stars. Note how far the faint stars on the outside spherical edge of the galaxy extend into space. M90 is a spiral galaxy which contains about a trillion stars. The outside spiral arms of M90 appear featureless, but numerous star clusters and dark dust lanes can be seen in the intermediate section between the central galaxy core and the outside arms. Immediately to the right of M90 is the galaxy IC 3583, which may be close enough to be interacting gravitationally with M90.

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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
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	5221515
PixInsight job	I1PO36PXREKK69NCHJLH6EY9MUPC17IG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h36m15s.649
RA (top/left)	12h37m28s.856
RA (top/right)	12h37m12s.858
RA (bottom/right)	12h35m02s.194
RA (bottom/left)	12h35m18s.640

Dec (center)	+12°51′42″.68
Dec (top/left)	+12°24′32″.99
Dec (top/right)	+13°21′04″.21
Dec (bottom/right)	+13°18′50″.11
Dec (bottom/left)	+12°22′19″.59

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M89 / M90

M89 / M90

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Image Index:

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M89 / M90

M89 / M90

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