M31 and its outer regions. ( Olly Penrice )

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

M31 and its outer regions.,

Olly Penrice

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M31 and its outer regions.

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M31 and its outer regions.

Basic astrometry details

Astrometry.net job: 4008581

RA center: 00h42m48s.10

DEC center: +41°15′36″

Pixel scale: 5.155 arcsec/pixel

Orientation: 241.201 degrees

Field radius: 2.486 degrees

Resolution: 2969x1800

File size: 3.1 MB

Data source: Backyard

Two panel mosaic using Tak FSQ106N, Atik 11000 and Mesu 200 in L HaRGB. The idea was to try and catch as much of the outer glow as possible so I went for 30 minute luminance subs, which certainly helped. I also used some short TEC140 subs to try to reach into the core in luminance. In this reprocess of older data I used Starnet++ which wasn't available at the time and has helped with star reduction. I also followed the Hubble team on colour, cooling my original reds, lessening the intensity of the blues and generally going for lower saturation.

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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

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	4008581
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M31 and its outer regions.

M31 and its outer regions.

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Image Index:

Contribution Index (beta):

M31 and its outer regions.

M31 and its outer regions.

Acquisition details

Description

Comments

Sky plot

Histogram

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