Andromeda Galaxy (M31) (Anthony Glas)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda Galaxy · HD3431 · HD3765 · HD3969 · HD4143 · HD4174 · HD4322 · HD4501 · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224

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Andromeda Galaxy (M31)

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Andromeda Galaxy (M31)

Andromeda Galaxy
A classic target, figured it would be a good option for this night.
I went for LRGB with a 3:1:1:1 ratio (180s/60s). I approached this using starless processing techniques (Jimmy's guide).
Once again BlurX v4 has helped to fix the corner stars, (still more backfocus adjustments to be done). Some more data would've been useful as there is some clear chrominance noise, and the background could use some more work. I finally found out the source of the vertical lines in my previous images, which was linear defects corrections being on in WBPP. After turning it off, no more vertical lines. I will probably be going back to my older images to correct this, many revisions to come!
Imaged from a Bortle 5 area; acquisition using NINA; processed in PI.

Acquisition:
42 x 180s L
41 x 60s R
41 x 60s G
41 x 60s B
4h 9m total

Equipment:
EQ6-R Pro
William Optics GT81 w/ 6AIII flattener
QHY163M w/ Antlia 3nm SHO & Antlia V-Series LRGB

Processing:
WBPP
DBE
BlurX
Combined RGB
StarXTerminator
Prepared L as luminance (stretched)
GHS/HT for stretching
LRGB Combination
CurvesTransformation
Noise reduction & sharpening (NoiseX, MultiscaleLinearTransform)
Star addition using PixelMath (https://www.nightphotons.com/guides/star-addition)
DarkStructureEnhance
Final color corrections

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	8929198
PixInsight job	AUHNJZOU7FXPPA404H2E4H510HNJMUJD
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h42m44s.17
RA (top/left)	00h47m22s.94
RA (top/right)	00h48m35s.74
RA (bottom/right)	00h37m53s.74
RA (bottom/left)	00h37m05s.66

Dec (center)	+41°16′12″.2
Dec (top/left)	+39°53′03″.4
Dec (top/right)	+42°29′51″.4
Dec (bottom/right)	+42°38′34″.3
Dec (bottom/left)	+40°01′28″.7

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Andromeda Galaxy (M31)

Andromeda Galaxy (M31)

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Andromeda Galaxy (M31)

Andromeda Galaxy (M31)

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