La galaxie du Dollar d'Argent (Corine Yahia (RIGEL33))

Celestial hemisphere: Southern · Constellation: Sculptor (Scl) · Contains: NGC 253 · Sculptor galaxy

La galaxie du Dollar d'Argent, Corine Yahia (RIGEL33)

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La galaxie du Dollar d'Argent

Link to TIFF/FITS: https://flic.kr/p/TCjtYi

Powered byPixInsight

La galaxie du Dollar d'Argent

Link to TIFF/FITS: https://flic.kr/p/TCjtYi

La galaxie du Dollar d’Argent, plus connu chez nous comme la galaxie du Sculpteur à cause de sa position près de la constellation du Sculpteur, est cataloguée comme NGC 253. C’est Caroline Herschell, sœur de William, qui la découverte en 1783 alors qu’elle cherchait des comètes. Cette galaxie est classée dans les spirales intermédiaires, c'est-à-dire entre les classifications de galaxies spirales régulières et galaxies spirales barrées. Elle se situe à une distance d’environ 10,6 millions d’années et affiche un haut taux de naissance d’étoiles.

Ayant envie de l’imager depuis des années, je dus prendre mon mal en patience car elle n’est visible qu’en fin d’automne et en hiver, période où la météo n’est pas très favorable, d’autant qu’elle est assez basse sur l’horizon. Mais en ce mois de décembre 2016, des fenêtres de tir étaient ouvertes et j’en profitais. Le brouillard m’obligea à prendre des poses sur deux soirées, les 3 et 17 décembre. Mais enfin, j’avais assez de données pour sortir une image potable dont je suis assez contente, d’autant que je n’ai pas eu à trop traiter. Comme quoi, la patience, ça paye ;)

Elle sera ma dernière acquisition de l’année 2016.

Photo prise les 3 et 17 décembre à Saucats (33) – Canon 350D au foyer d’une lunette Skywatcher 120/900 (avec aplanisseur/réducteur) sur monture Orion Sirius EQ-G (sans autoguidage ni goto).

63 poses d’1 mn – 15 DOF – ISO 800 – IRIS et Toshop.

AAA : Astronomes et Astrographes Amateurs

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	Distinct awarded users	Total awarded images
Image of the day
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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
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Star trails
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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
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Amateur hosting facility
Public amaeteur data
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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	1578848
PixInsight job	n/a
PixInsight queue size	n/a
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La galaxie du Dollar d'Argent

La galaxie du Dollar d'Argent

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La galaxie du Dollar d'Argent

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