M77 Cetus A (Dan)

Celestial hemisphere: Southern · Constellation: Cetus (Cet) · Contains: 82 Cet) · M 77 · NGC 1055 · NGC 1068 · NGC 1087 · NGC 1090 · The star 84 Cet · The star Al Kaff al Jidhmah III (δ Cet

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M77 Cetus A

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M77 Cetus A

Messier 77 (M77), also known as Cetus A, is a barred spiral galaxy located in the constellation Cetus. It lies at a distance of 47 million light years. The galaxy has the designation NGC 1068 in the New General Catalogue.

Messier 77 is one of the largest galaxies included in the Messier catalogue. It occupies an area of 7.1 by 6 arc minutes of apparent sky, which corresponds to a linear diameter of 170,000 light years.

The galaxy’s inner disk surrounding the active nucleus is home to emission nebulae with significant expansion velocities. Regions of intense star forming activity, some of the brightest ones known, have been detected in an inner bar. They may be the most luminous starburst regions within 100 million light years of our solar system.

The edge-on galaxy NGC 1055 is another prominent member of the M77 Group.

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
Image of the day
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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
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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
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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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M77 Cetus A

M77 Cetus A

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M77 Cetus A

M77 Cetus A

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