NGC 281 ou Nébuleuse de Pac-Man (Lacheheb)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1590 · NGC 281

NGC 281 ou Nébuleuse de Pac-Man, Lacheheb

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NGC 281 ou Nébuleuse de Pac-Man

Link: https://1drv.ms/i/s!ApfteboMEzL6v3ukHVaQ2NBra_TA?e=Ra5P3U

Link to TIFF/FITS: https://1drv.ms/i/s!ApfteboMEzL6v33gYsJR2S90u8J1?e=gsN2WW

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NGC 281 ou Nébuleuse de Pac-Man

Link: https://1drv.ms/i/s!ApfteboMEzL6v3ukHVaQ2NBra_TA?e=Ra5P3U

Link to TIFF/FITS: https://1drv.ms/i/s!ApfteboMEzL6v33gYsJR2S90u8J1?e=gsN2WW

NGC 281 est une région HII située à environ 10 000 années-lumière de la Terre dans la constellation de Cassiopée.
D'un diamètre d'environ 100 années-lumière, elle fait partie du bras de Persée.
Elle inclut ou est proche de l'amas ouvert IC 1590, l'étoile double HD 5005 et plusieurs globules de Bok.
Elle est visible dans un télescope amateur dans les zones où le ciel nocturne est suffisamment sombre.
Elle est parfois officieusement appelée nébuleuse Pacman à cause de sa ressemblance fortuite au héros éponyme du jeu d'arcade Pac-Man.

Cette nébuleuse en émission a été découverte par l'astronome américain Edward Barnard en 1881.
Le 26 novembre 1881, Edward Emerson Barnard tomba sur une petite nébuleuse gazeuse dans la constellation de Cassiopée.
En fait, il cherchait des comètes pour la découverte desquelles un prix de 200 dollars (ce qui correspond aujourd’hui à 4 400 dollars) était proposé.
Il donna la description suivante de sa découverte : nébuleuse faible, diffuse et d’une taille non supérieure à dix minutes d’arc.
Il lui fut donné le nom de NGC 281, amas d’étoiles central, numéro de catalogue IC 5090.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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
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Astrometry.net job	8473680
PixInsight job	n/a
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NGC 281 ou Nébuleuse de Pac-Man

NGC 281 ou Nébuleuse de Pac-Man

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