Ngc2857- Arp1 (Matthieu TEQUI)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 2854 · NGC 2856 · NGC 2857

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Ngc2857- Arp1

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Ngc2857- Arp1

Ce n’est pas l’image la plus spectaculaire mais j’ai pris beaucoup de plaisir à la shooter et à la traiter.

Il s’agit de Ngc 2857 (Arp1). C’est une galaxie spirale située dans la constellation de la grande ourse à ... 223 millions d’année lumière.

Cette galaxie est le premier objet catalogué dans l'Atlas of Peculiar Galaxies d'Halton Arp.

Elle est accompagnée de 2 galaxies en interaction (Ngc 2854 et Ngc 2856) dont le challenge était de faire ressortir les différents jets de matière:

-Un petit qui part de Ngc 2856,

-Un plus grand mais plus ténu qui relie les 2 galaxies entre elle,

-Un dernier qui prolonge Ngc 2854.

Concernant les acquisitions, autant vous dire que ce n’est pas simple car la taille apparente de Ngc 2857 est de 2,24’! Difficile de faire ressortir bcp de détail mais je suis satisfait du résultat final surtout qd on connaît sa rareté photographique.

L: 220x180sec

RVB: 3x50x180sec

Grand champ en révision 2

Final
Original
D

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	4375705
PixInsight job	8DUK5YVZH1KXDIR86YQVONOAIEKWSSDM
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h24m20s.542
RA (top/left)	09h24m58s.551
RA (top/right)	09h25m15s.228
RA (bottom/right)	09h23m42s.259
RA (bottom/left)	09h23m26s.297

Dec (center)	+49°17′29″.55
Dec (top/left)	+49°06′18″.34
Dec (top/right)	+49°26′42″.24
Dec (bottom/right)	+49°28′39″.84
Dec (bottom/left)	+49°08′16″.57

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Ngc2857- Arp1

Ngc2857- Arp1

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Ngc2857- Arp1

Ngc2857- Arp1

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