The Whale and the Hockeystick (JohnEEvans)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: NGC 4627 · NGC 4631 · NGC 4656 · NGC 4657 · Whale Galaxy

The Whale and the Hockeystick, JohnEEvans

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The Whale and the Hockeystick

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The Whale and the Hockeystick

The Whale Galaxy (NGC4631) is a barred spiral galaxy about 25 million light-years away in Canes Venatici (The Hunting Dogs). It is interacting gravitationally with a dwarf elliptical galaxy (NGC 4627, also called the Pup Galaxy) which can be seen just below the Whale in the image.The Whale Galaxy appears edge-on to us but still reveals a bright, luminous centre with a very dusty disc. The centre is so bright because of the tremendous light coming from newborn stars along with the heating of cosmic gas by stellar explosions known as supernovae.

The Whale is about the same size are our own Milky Way galaxy.

The Whale's companion, the Hockeystick Galaxy (NGC4656), is another barred spiral galaxy that has been significantly warped by gravitational interaction with the Whale its Pup.

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.

Status	Basic success
Started	...
Astrometry.net job	5661605
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Contribution Index (beta):

The Whale and the Hockeystick

The Whale and the Hockeystick

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Image Index:

Contribution Index (beta):

The Whale and the Hockeystick

The Whale and the Hockeystick

Equipment

Acquisition details

Description

Comments

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