NGC 3521 (Jerome Proust)

Celestial hemisphere: Southern · Constellation: Leo (Leo) · Contains: NGC 3521

Image of the day 07/19/2012

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NGC 3521

Image of the day 07/19/2012

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NGC 3521

Image traitée dans le cadre du concours organisé par l'association Astro Images Processing (A.I.P.) et arrivée à la 4e place.

Le télescope utilisé en remote est celui du SkyCenter, il est situé en Arizona au Etats-Unis sur le Mont Lemmon à 2700 mètres d'altitude où les conditions de seeing sont exceptionnelles

Télescope "Schulman" de 0.81 mètre ouvert à F/7, optique Ritchey-Chretien

Caméra CCD Sbig STX16803 avec 5 filtres Ha L RVB

Les temps de poses choisis sont de 5 minutes en Bin 2x2 pour les filtres RVB et 15 minutes en Bin 1x1 pour les filtres Ha ou Clear. Les poses sont autoguidées avec le capteur secondaire de la caméra principale.

http://www.astro-images-processing.fr/remote-arizona/resultat/avril-juin-2012-ngc-3521.html

NGC 3521 est une galaxie spirale de type SABbc située entre 30 et 35 millions d'années-lumière de la Terre dans la constellation du Lion. Elle fait environ 50 000 années-lumière d'envergure.

NGC 3521 appartient au genre des galaxies spirales « floconneuse » en raison d'un halo contenant des milliards d'étoiles, ce qui la distigue des galaxies sprirale classiques comme M31.

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	6432132
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Image of the day 07/19/2012

NGC 3521

Image of the day 07/19/2012

NGC 3521

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Image Index:

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Image of the day 07/19/2012

NGC 3521

Image of the day 07/19/2012

NGC 3521

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