M31 Andromeda Galaxy (John R Carter, Sr.)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda galaxy · Great Nebula in Andromeda · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224

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M31 Andromeda Galaxy

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

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M31 Andromeda Galaxy

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

M31, the Andromeda Galaxy, is our closest galaxy neighbor. The smudge at the top right is M110, a companion galaxy of M31. And the bright smudge below and to the left of the center of M31 is M32, another companion galaxy of M31. M110 and M32 are also called dwarf galaxies. These three galaxies are 2.5 million light years away and heading straight for the Milky Way. In about 4-5 billion years, M31 will merge with the Milky Way. Astronomers are already calling the merged galaxies Milkomeda. The letter “M” is for Messier, the last name of the French astronomy Charles Messier. He catalogued 103 objects, of which only 17 were his own discoveries, and posthumously is credited with an addition 7 to bring it to a total of 110 objects. The reason Messier catalogued these objects is because he was hunting for comets and kept coming across these smudges in the sky that didn’t move. So he decided to catalog their positions and labelled them as “not interesting, don’t go there.” One night each year it is possible to spend an entire night from dusk to dawn and find all 110 Messier objects as they pass across the sky. This is now called the Messier Marathon.

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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	Advanced success
Started	...
Astrometry.net job	3029272
PixInsight job	9MMJMLVPHXM6ALMJGB8RZOMGISB4BA58
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h42m42s.70
RA (top/left)	00h46m11s.90
RA (top/right)	00h46m24s.12
RA (bottom/right)	00h39m06s.62
RA (bottom/left)	00h39m05s.62

Dec (center)	+41°22′17″.3
Dec (top/left)	+40°30′58″.7
Dec (top/right)	+42°12′13″.0
Dec (bottom/right)	+42°13′13″.0
Dec (bottom/left)	+40°31′56″.7

Image Index:

Contribution Index (beta):

M31 Andromeda Galaxy

M31 Andromeda Galaxy

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Image Index:

Contribution Index (beta):

M31 Andromeda Galaxy

M31 Andromeda Galaxy

Equipment

Acquisition details

Description

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Sky plot

Histogram

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