Andromeda Galaxy - M31 in RGB (Tom Dinneen)

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

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Andromeda Galaxy - M31 in RGB

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

Powered byPixInsight

Andromeda Galaxy - M31 in RGB

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

The Andromeda Galaxy (M31 in the Messier catalogue and NGC 224 in the New General Catalogue) is a barred spiral galaxy (same as our Milky Way) in the constellation of Andromeda. It's 2.5M light years away, is home to over a trillion stars and has a diameter of around 220,000 light years.

Thought to be a nebula until the 1920's. It wasn't until it's distance was established (first by Curtis in 1917 'island universe', then Opik in 1922 and finally Hubble in 1925) that it was identified as an entirely separate galaxy and not a cluster or stars and gases within our own).

We'll get a closer inspection in around 4.5 billion years when we collide with it.

Pretty happy with this considering it's just 30 x 30 second exposures with an OSC, no filter, moon was 81% and maybe 60 degrees away. Also no calibration with darks or flats. My first attempt was woeful but then I followed https://www.lightvortexastronomy.com/tutorial-example-m31-andromeda-galaxy---dslr.html and hey presto... magic happened.

Trevinca Skies

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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	3752336
PixInsight job	KWOIRG8XM6JU185YNFOTEP3J0T5HR7OX
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h42m59s.99
RA (top/left)	00h46m23s.52
RA (top/right)	00h47m02s.20
RA (bottom/right)	00h39m29s.30
RA (bottom/left)	00h39m04s.27

Dec (center)	+41°14′14″.5
Dec (top/left)	+40°11′49″.4
Dec (top/right)	+42°12′01″.3
Dec (bottom/right)	+42°16′16″.6
Dec (bottom/left)	+40°15′57″.1

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Andromeda Galaxy - M31 in RGB

Andromeda Galaxy - M31 in RGB

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Image Index:

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Andromeda Galaxy - M31 in RGB

Andromeda Galaxy - M31 in RGB

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