m51 (Astropotes) - AstroBin

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4263 · M 51 · NGC 5194 · NGC 5195 · Whirlpool Galaxy

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m51

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m51

Voici notre dernière image, un portrait de M51 en près de 100h de poses! Ce célèbre couple de galaxies en interaction dans la Grande Ourse est souvent cité pour illustrer ce que peut être le cannibalisme galactique.

Avec les brutes de :

- Fred Lamagat (RC8 @f/5 + Atik 4000)

- Jul Astro (TSA 120 + G2-4000)

- Matthieu Tequi (C9 Edge @f/7 + asi1600)

- Jean Baptiste Auroux (TSA 102 + Atik one 6.0)

- Mathieu Guinot (Esprit 120 + QSI 683)

Nous avons sélectionné parmi toutes les brutes :

- 65h de Luminance

- 15h de Halpha

- 5h30 par couche couleur RVB

Pour exploiter au mieux les setups des participants nous avons incrusté les brutes aux echantillonnages les plus fins dans celles aux plus grands champs, ce qui nous a permit de bénéficier de détails dans la galaxie en même temps que d'un champ suffisant pour mettre en valeur le très ténu IFN environnant, que l'on voit rarement en image.

Plusieurs membres ont traité l'image puis nous avons voté pour notre préférée après de nombreux ajustements grâce aux émulations constructives et dynamiques au sein du groupe.

Prétraitements et traitements Pixinsight et Photoshop (M. Guinot & A. Chapron).

C

Description: FredLam

Uploaded: ...

G

Description: Mathieu G v2

Uploaded: ...

H

Description: AuC v10

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I

Description: Benji processing

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K

Description: Idem J, mais en mieux lol
Etoile corrigée

Uploaded: ...

L

Description: derniere passe d'accentation

Uploaded: ...

M

Description: derniere passe accentuation 100%

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	Basic success
Started	...
Astrometry.net job	4049789
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

m51

m51

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Image Index:

Contribution Index (beta):

m51

m51

Equipment

Acquisition details

Description

Comments

Revisions

C

G

H

I

K

L

M

Sky plot

Histogram

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