Messier 13 Amas d'Hercule ou Amas Globulaire d'Hercule (Lacheheb)

Messier 13 Amas d'Hercule ou Amas Globulaire d'Hercule

Link: https://1drv.ms/u/s!ApfteboMEzL6t2qtTdkMxOFjchmj?e=0dkYmM

Link to TIFF/FITS: https://1drv.ms/u/s!ApfteboMEzL6l163CJUV5fS0Vng_?e=KmFh1o

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Messier 13 Amas d'Hercule ou Amas Globulaire d'Hercule

Link: https://1drv.ms/u/s!ApfteboMEzL6t2qtTdkMxOFjchmj?e=0dkYmM

Link to TIFF/FITS: https://1drv.ms/u/s!ApfteboMEzL6l163CJUV5fS0Vng_?e=KmFh1o

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

L'amas globulaire M13 ou Messier 13, très souvent appelé le Grand Amas d'Hercule, est parmi les objets les plus imposants du catalogue Messier.

Comportant plus de 500 000 étoiles, il est aussi l'un des plus vieux objets : son âge est estimé à 12 ou 14 milliards d'années. Il apparaît avec un diamètre de 20 minutes d'arc, soit un diamètre réel de 150 années-lumière. Il a cependant la particularité de contenir de nombreuses étoiles jeunes (appartenance confirmée d'après leur vitesse angulaire), ce qui est inhabituel pour un amas de cet âge : les scientifiques pensent que ces étoiles ne sont pas nées à l'intérieur de l'amas, mais ont plutôt été capturées par ce dernier.

M13 a été utilisé en 1974 (le 16 novembre) comme cible pour l'envoi d'un message à une potentielle civilisation extraterrestre. Ce message a été envoyé à partir du radiotélescope d'Arecibo, qui participe également au projet SETI. Il contenait des informations comme les chiffres, le numéro atomique de l'hydrogène, du carbone, de l'azote, de l'oxygène et du phosphore, des données sur l'ADN, la forme et la taille d'un humain, la population terrestre, et la position de la Terre dans le système solaire. Il mettra plus de 22 000 ans à y parvenir.

Source: WIKIPEDIA

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	Image of the day	Top pick	Top pick nominations	Total submitted
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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.

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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.
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Astrometry.net job	4543843
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Messier 13 Amas d'Hercule ou Amas Globulaire d'Hercule

Messier 13 Amas d'Hercule ou Amas Globulaire d'Hercule

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Messier 13 Amas d'Hercule ou Amas Globulaire d'Hercule

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