The Coma Cluster of Galaxies, Abell 1656, NGC 4889 (SparkyHT)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: IC 3946 · IC 3949 · IC 4040 · IC 4051 · NGC 4853 · NGC 4860 · NGC 4865 · NGC 4867 · NGC 4869 · NGC 4872 · NGC 4874 · NGC 4881 · NGC 4889 · NGC 4895 · NGC 4896 · NGC 4907 · NGC 4908 · NGC 4911 · NGC 4919 · NGC 4921 · NGC 4923

The Coma Cluster of Galaxies, Abell 1656, NGC 4889, SparkyHT

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The Coma Cluster of Galaxies, Abell 1656, NGC 4889

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The Coma Cluster of Galaxies, Abell 1656, NGC 4889

Data taken with a 6" Tak APO, iTelescope remote site, NM. Data collected by Tom Schmidtkunz, processed by Chad Andrist.

Instrument Package

iTelescope T3 FoV - M42 (white frame)

CCD: SBIG ST-4000XCM One Shot Color CCD

A/D Gain: 0.6e-/ADU

Pixel Size: 7.4um Square

Resolution: 2.88 arc-secs/pixel

Sensor: Frontlit

Cooling: -20C Winter (-15C Summer)

Array: 2048 x 2048 (8.3 Megapixels)

FOV: 98.2 x 98.2 arc-mins

Filters: NA

Position Angle: 000º

Telescope Optics

OTA: Takahashi TOA-150

Optical Design: Apochromatic Refractor

Aperture: 150mm

Focal Length: 1095mm

F/Ratio: f7.3

Guiding: Internal

Mount: Paramount GTS

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	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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Star trails
Northern lights
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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	Basic success
Started	...
Astrometry.net job	1563393
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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The Coma Cluster of Galaxies, Abell 1656, NGC 4889

The Coma Cluster of Galaxies, Abell 1656, NGC 4889

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Image Index:

Contribution Index (beta):

The Coma Cluster of Galaxies, Abell 1656, NGC 4889

The Coma Cluster of Galaxies, Abell 1656, NGC 4889

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

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