M51 - a more detailed Whirlpool (Ewam)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 51 · NGC 5194 · NGC 5195 · Whirlpool galaxy

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M51 - a more detailed Whirlpool

This image - VERSION H - is a tribute to 3 guys up here who helped in my moving forward : moonrocks for his time and efforts to drag me into Ps (good move!), Paddy Gilliland for his interest and tips (PixIn) sent in PM, and ItalianJobs for his gallery (something in his style made me curious...)

> VERSION H : full reprocessing of my sub-groups, de-noise, local contrast, color layers, ... Hours on this one :-) This is it ... until stable sky and more data ;-)

> VERSIONS E - F - G : 3 night's acquisitions are in here :

All my subs stacked together in 3 groups than processed : 34 x 90 sec + 54 x 75 sec + 17 O-III x 420 sec ; there is a bit too much noise and dusts in the background, but I wanted to punch detail visibility to the maximum.

VERSION D : added 20 subs in the mix. Next version, will start from scratch with all best subs...

VERSION B : next night was another chance to grab more subs... Here is a first selection out of 85.

TECH SPEC :

O-III :

> 17 x 420 sec ;

Broadband :

> 54 x 75 sec ;

> 34 x 90 sec ; all @ iso3200

(First 3 version, only 20 Bb + 17 O-III)

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	Basic success
Started	...
Astrometry.net job	599909
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M51 - a more detailed Whirlpool

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Image Index:

Contribution Index (beta):

M51 - a more detailed Whirlpool

Equipment

Acquisition details

Description

Comments

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Sky plot

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