M31 Andromeda Galaxy (Robin Livermore)

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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M31 Andromeda Galaxy

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M31 Andromeda Galaxy

No need to explain what M31 is!

I haven't previously got a decent image of this for various reasons. My objective was also to have a go at adding some Ha data (using OSC and dual narrowband filter) to my main image. This proved to be more complex than expected, as the Pixinsight tutorials on the subject weren't working for me. So I had to bodge my way through, which I guess was useful, in that it forced me to try and understand properly what I was doing, so that I could alter PixelMath expressions to do what I needed.

My initial stack had poor stars, so I swapped these out for a slightly better set shot the next evening. Poor weather meant a long wait before I could shoot the Ha.

Second revision sorts out a slight artifact problem with M32 caused by the star replacement, and pushes the colour saturation a tiny bit more

Original
B
Final
C

B

Description: corrected artifact problem with M32 and slight push to the saturation

Uploaded: ...

C

Description: Improved processing of the Ha combination into the broadband, making it a bit more subtle. Due to issues with alignment, I've had to crop it further, unfortunately.

Uploaded: ...

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	5828108
PixInsight job	N7TAAMBHCZTLULT4F1CTAXUTYJTSTR74
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h42m44s.32
RA (top/left)	00h45m16s.36
RA (top/right)	00h48m48s.49
RA (bottom/right)	00h40m04s.63
RA (bottom/left)	00h36m53s.98

Dec (center)	+41°14′41″.5
Dec (top/left)	+39°38′24″.7
Dec (top/right)	+42°28′58″.0
Dec (bottom/right)	+42°50′47″.1
Dec (bottom/left)	+39°59′18″.3

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Contribution Index (beta):

M31 Andromeda Galaxy

M31 Andromeda Galaxy

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Image Index:

Contribution Index (beta):

M31 Andromeda Galaxy

M31 Andromeda Galaxy

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Description

Comments

Revisions

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C

Sky plot

Histogram

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