Andromeda Galaxy M31 in HaRGB (galactic_surfer)

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 in HaRGB

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Andromeda Galaxy M31 in HaRGB

One of my first astro-photos was M31 (of course!) back in March 2022, captured with a RedCat 51 and OSC camera. Original photo is below (love that magenta!). After grinding away for a year and a half, learning PixInsight, and investing in better gear, I'd like to share my latest work, based on 5 hours of H-alpha and about 7 hours of RGB data from my Bortle 5/6 backyard (SQM gets way better after 1am local time). Seeing and transparency were average during these nights, with a lot of dew in the air, and about 25% of my subs were rejected during image integration (using a more aggressive 0.2 minimum weight).

This was the first time I mixed H-alpha and RGB, and I had no clue how to do it. So shout out goes to @CWTauri for his extremely helpful M51 "Continuum Subtraction" tutorial on www.adamblockstudios.com.

March 2022 first attempt, different gear (still was blown away at the time! I was hooked.):

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	8350389
PixInsight job	N79MQ23ASK8DLR28QTXP45EDWMO7YYGU
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h42m29s.55
RA (top/left)	00h45m36s.16
RA (top/right)	00h48m06s.28
RA (bottom/right)	00h39m14s.89
RA (bottom/left)	00h37m03s.80

Dec (center)	+41°10′02″.6
Dec (top/left)	+39°47′45″.8
Dec (top/right)	+42°14′17″.1
Dec (bottom/right)	+42°32′18″.4
Dec (bottom/left)	+40°05′10″.0

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Andromeda Galaxy M31 in HaRGB

Andromeda Galaxy M31 in HaRGB

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Andromeda Galaxy M31 in HaRGB

Andromeda Galaxy M31 in HaRGB

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