NGC4489 - Coma Galaxy cluster (Georg N. Nyman)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: HD112886 · HD112887 · IC 3943 · IC 3946 · IC 3947 · IC 3949 · IC 3955 · IC 3957 · IC 3959 · IC 3960 · IC 3963 · IC 3968 · IC 3973 · IC 3976 · IC 3998 · IC 4011 · IC 4012 · IC 4021 · IC 4026 · IC 4030 · IC 4033 · IC 4040 · IC 4041 · IC 4042 · IC 4044 · IC 4045 · IC 4051 · IC 839 · NGC 4848 · NGC 4850 · And 29 more.

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NGC4489 - Coma Galaxy cluster

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NGC4489 - Coma Galaxy cluster

The galaxy NGC4489 is just the visual center of this huge galaxy cluster in the constellation Coma Berenices. The cluster contains well over 1000 galaxies, most of them more than 320 Mio LJ distant from Earth. NGC4489 itself is only about 60Mio LJ distant from Earth, so one of the closest ones. Together with NGC4874, NGC4489 are the two brightest objects in that cluster - for us, they belong to that cluster, but that is only a visual projection from our position.
Most of what at first glance seems to be a star, is a galaxy - just look closely. Very difficult to grab with a 12" RC but I tried it. Weather did not really cooperate as much as I hoped, so there is room for improvement of the result

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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	9675105
PixInsight job	9UK9FBXL0MTECO88PCV71JS26HFD9IAU
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h00m07s.28
RA (top/left)	13h02m13s.29
RA (top/right)	12h58m02s.71
RA (bottom/right)	12h58m00s.45
RA (bottom/left)	13h02m12s.60

Dec (center)	+27°58′49″.8
Dec (top/left)	+27°40′11″.4
Dec (top/right)	+27°39′41″.6
Dec (bottom/right)	+28°17′23″.5
Dec (bottom/left)	+28°17′49″.9

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NGC4489 - Coma Galaxy cluster

NGC4489 - Coma Galaxy cluster

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NGC4489 - Coma Galaxy cluster

NGC4489 - Coma Galaxy cluster

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