Messier 51 aka Whirlpool Galaxy (Aarni Vuori)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: HD117815 · IC 4263 · IC 4277 · IC 4278 · M 51 · NGC 5169 · NGC 5194 · NGC 5195 · NGC 5198 · Whirlpool galaxy

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Messier 51 aka Whirlpool Galaxy

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Messier 51 aka Whirlpool Galaxy

I never had photographed this familiar target before. I thought my FOW was a bit too big for it and with my resolution I could not crop the picture with a great succes. But then again, why not. The sky was clear and the moon did not disturb either.

And as I have not photographed galaxies that much, I really do need to work on modding the galaxies. I feel that they are challenging in many ways. One wants to get as much details from them but there is at the same time the risk that it goes over the top.

At least I had enough of data. Stacking the frames gave me some kind of weird gradient on the LRGB-frames after drizzleing in PI. Not sure what it was but it made the modding challenging.

The picture consists of following subframes:

-LRGB each 40 X 3mins

-Ha 12 X 10 mins

====================

TTL: 10 hours

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	2602180
PixInsight job	2M0PTME520W6DFMMWU3P5STI6198N0V2
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h29m46s.27
RA (top/left)	13h26m47s.40
RA (top/right)	13h27m11s.72
RA (bottom/right)	13h32m42s.30
RA (bottom/left)	13h32m24s.27

Dec (center)	+47°11′36″.8
Dec (top/left)	+47°45′14″.3
Dec (top/right)	+46°34′54″.8
Dec (bottom/right)	+46°37′40″.8
Dec (bottom/left)	+47°48′09″.8

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Messier 51 aka Whirlpool Galaxy

Messier 51 aka Whirlpool Galaxy

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Messier 51 aka Whirlpool Galaxy

Messier 51 aka Whirlpool Galaxy

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