Messier 27 Nébuleuse de l'Haltère ou Dumbbell Nebula (Lacheheb)

Celestial hemisphere: Northern · Constellation: Vulpecula (Vul) · Contains: Dumbbell Nebula · M 27 · NGC 6853

Messier 27 Nébuleuse de l'Haltère ou Dumbbell Nebula, Lacheheb

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Messier 27 Nébuleuse de l'Haltère ou Dumbbell Nebula

Link: https://1drv.ms/u/s!ApfteboMEzL6l1lH_Zehocn5NWHT?e=JTcIUG

Link to TIFF/FITS: https://1drv.ms/u/s!ApfteboMEzL6l1opt4bmYHk-AeAn?e=4PoN0q

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

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Messier 27 Nébuleuse de l'Haltère ou Dumbbell Nebula

Link: https://1drv.ms/u/s!ApfteboMEzL6l1lH_Zehocn5NWHT?e=JTcIUG

Link to TIFF/FITS: https://1drv.ms/u/s!ApfteboMEzL6l1opt4bmYHk-AeAn?e=4PoN0q

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

La nébuleuse de l'Haltère est une nébuleuse planétaire située dans la constellation du Petit Renard à environ 1227 années-lumière. Cette nébuleuse, découverte par Charles Messier le 12 juillet 1764, est la première nébuleuse planétaire observée de l'histoire de l'astronomie.

Cet objet est particulièrement brillant et possède un diamètre apparent très large, puisque la partie la plus lumineuse atteint 1/5 de celui de la Lune. Sachant que la vitesse d'expansion atteint 6,8 secondes d'arc par siècle, son âge est estimé à 3 000 ou 4 000 ans.

L'étoile centrale (à l'origine de la nébuleuse) a une magnitude apparente de 13,5, ce qui la rend difficilement observable pour un astronome amateur. C'est une naine blanche de couleur bleue très chaude (85 000 K). Elle est peut-être accompagnée d'une autre étoile, encore plus faible (magnitude 17), à 6,5 secondes d'arc de distance apparente.

La forme particulière de la partie lumineuse a valu à cette nébuleuse le nom de Nébuleuse de l'Haltère (Dumbbell en anglais). On lui connaît également les surnoms de Trognon de pomme, de Sablier.

Source: WIKIPEDIA

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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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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	4536193
PixInsight job	n/a
PixInsight queue size	n/a
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Messier 27 Nébuleuse de l'Haltère ou Dumbbell Nebula

Messier 27 Nébuleuse de l'Haltère ou Dumbbell Nebula

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Messier 27 Nébuleuse de l'Haltère ou Dumbbell Nebula

Messier 27 Nébuleuse de l'Haltère ou Dumbbell Nebula

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