M31 The Andromeda Galaxy (Eshan Toorabally)

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 The Andromeda Galaxy

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M31 The Andromeda Galaxy

M31, or the Andromeda Galaxy, is the closest non-satellite galaxy to the Milky Way, at a cool 2.5 million light years away, making it also the furthest object that can be seen with the naked eye from Earth. It is estimated to have a trillion stars, about twice that of our own galaxy and will, in billions of years, collide with the Milky Way.

Data acquired over two nights in mid-August 2018. Light pollution, M31's low position for most of the night and my unmodified camera made it hard to post-process - I aim to come back to this target with a cooled camera!

Acquired with Sony A6500 (unmodified) and William Optics Z73 on iOptron CEM25P mount. Lacerta MGen II drove camera, guiding and dithering.

Reprocess: Came back to data in May 2019, now stacked with APP, using quality ranking of subs vs. DSS stacking previously. Hopefully also improved noise reduction and stretching techniques!

Original
Final
B

B

Description: Major reprocess, now stacked in APP using quality ranking of subs before polishing off in Pixinsight

Uploaded: ...

Suburban Astrophotography
The refractors!
Cloudy Nights
UK Astro-Imaging
Southern Hemisphere Astro

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	2672957
PixInsight job	TR4LFVM2ZI5GGMH2LV8OQ1HEPJK9J9DB
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h42m37s.65
RA (top/left)	00h47m53s.45
RA (top/right)	00h47m41s.56
RA (bottom/right)	00h37m07s.60
RA (bottom/left)	00h37m47s.22

Dec (center)	+41°14′56″.2
Dec (top/left)	+39°47′48″.0
Dec (top/right)	+42°44′31″.1
Dec (bottom/right)	+42°41′14″.6
Dec (bottom/left)	+39°44′38″.5

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Contribution Index (beta):

M31 The Andromeda Galaxy

M31 The Andromeda Galaxy

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Image Index:

Contribution Index (beta):

M31 The Andromeda Galaxy

M31 The Andromeda Galaxy

Equipment

Acquisition details

Description

Comments

Revisions

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Sky plot

Histogram

In these public groups

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