{"id":12460,"date":"2020-09-12T09:03:37","date_gmt":"2020-09-12T09:03:37","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=12460"},"modified":"2020-10-04T12:55:26","modified_gmt":"2020-10-04T12:55:26","slug":"la-lune-etincelle-entre-venus-et-la-constellation-dorion","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2020\/09\/12\/la-lune-etincelle-entre-venus-et-la-constellation-dorion\/","title":{"rendered":"La Lune \u00e9tincelle entre V\u00e9nus et la constellation d’Orion"},"content":{"rendered":"

Sortie tr\u00e8s matinale pour admirer la Lune d\u00e9croissante qui s’est gliss\u00e9e entre l’\u00e9clatante plan\u00e8te V\u00e9nus et la belle constellation d’Orion de retour.<\/strong><\/p>\n

Un chasseur puni :<\/h5>\n

Elle est de retour ! La constellation d\u2019Orion, sans conteste la plus belle de toutes, est d\u00e9sormais visible avant l\u2019aube. Elle nous raconte l\u2019histoire d\u2019un chasseur arrogant. Il mourut foudroy\u00e9 par le venin d\u2019un scorpion (lire \u00e0 ce sujet\u00a0Pomp\u00e9i : une mosa\u00efque illustre le mythe d\u2019Orion et du Scorpion<\/a>). Dans la mythologie grecque le chasseur g\u00e9ant Orion passait son temps \u00e0 se vanter de ses prouesses. Exasp\u00e9r\u00e9e, H\u00e9ra, s\u0153ur et femme de Zeus, lui envoya un scorpion qui le piqua et le tua.<\/p>\n

\"\"<\/a>
Chez les Grecs, le chasseur Orion fut tu\u00e9 par un scorpion.<\/figcaption><\/figure>\n

Cette tr\u00e8s belle constellation, aussi c\u00e9l\u00e8bre que la Grande Ourse<\/a>, abrite une superbe n\u00e9buleuse, Messier 42 (la n\u00e9buleuse d’Orion<\/a>). Il faut un grand t\u00e9lescope pour en appr\u00e9cier toutes les subtilit\u00e9s, mais elle est d\u00e9j\u00e0 tr\u00e8s jolie dans une simple longue-vue<\/a>.<\/p>\n

D\u00e9cryptage d’une image :<\/h5>\n

Ce clich\u00e9 a \u00e9t\u00e9 r\u00e9alis\u00e9 vers 4 heures 30 le samedi 12 septembre avec la complicit\u00e9 de Christine, celle qui partage ma vie et m’accompagne r\u00e9guli\u00e8rement dans mes escapades nocturnes. La pose est de 15 secondes \u00e0 3200 iso avec un bo\u00eetier Nikon D7100 et un objectif Samyang de 12 mm de focale ouvert \u00e0 4. La Lune semble \u00e9clatante en raison de cette longue pose ; en r\u00e9alit\u00e9 nous sommes 5 jours avant la Nouvelle Lune<\/a>.<\/p>\n

\"\"<\/a>
La Lune \u00e9tincelle entre V\u00e9nus et la constellation d’Orion. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n

Outre la constellation d’Orion, nous pouvons \u00e9galement reconna\u00eetre Castor et Pollux, les deux principales \u00e9toiles de la constellation des G\u00e9meaux<\/a>. En dessous, V\u00e9nus attire l’\u0153il avec une magnitude<\/a> de -4. La seconde plan\u00e8te du Syst\u00e8me solaire est actuellement situ\u00e9e juste \u00e0 c\u00f4t\u00e9 de l’amas d’\u00e9toiles de la Cr\u00e8che<\/a> (faiblement visible sous le “n” de V\u00e9nus). \u00c0 l’aube du 14 septembre le fin croissant de Lune accompagn\u00e9 de sa lumi\u00e8re cendr\u00e9e<\/a> les rejoindra.<\/p>\n

Zoom sur Procyon et Sirius :<\/h5>\n

\u00c0 droite de V\u00e9nus brille Procyon (magnitude 0,4), une \u00e9toile g\u00e9ante double, l’\u00e9toile principale de la constellation du Petit Chien et la septi\u00e8me plus brillante du ciel nocturne. Encore plus \u00e0 droite se l\u00e8ve Sirius. Apr\u00e8s le Soleil<\/a>, Sirius est l’\u00e9toile la plus lumineuse vue de la Terre. Elle est situ\u00e9e \u00e0 un peu moins de 9 ann\u00e9es-lumi\u00e8re de nous et sa magnitude apparente est de -1,5. Sirius (Alpha Canis Majoris<\/em>) est la principale \u00e9toile de la constellation du Grand Chien ; son apparition \u00e0 l\u2019aube en \u00e9t\u00e9 est \u00e0 l\u2019origine du mot canicule. Chez les Egyptiens le retour de Sirius le matin annon\u00e7ait la prochaine crue du Nil.<\/p>\n","protected":false},"excerpt":{"rendered":"

Sortie tr\u00e8s matinale pour admirer la Lune d\u00e9croissante qui s’est gliss\u00e9e entre l’\u00e9clatante plan\u00e8te V\u00e9nus et la belle constellation d’Orion de retour. Un chasseur puni : Elle est de retour ! La constellation d\u2019Orion, sans conteste la plus belle de toutes, est d\u00e9sormais visible avant l\u2019aube. Elle nous raconte l\u2019histoire d\u2019un chasseur arrogant. Il mourut … Continuer la lecture de La Lune \u00e9tincelle entre V\u00e9nus et la constellation d’Orion<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":12461,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[354,2632,159],"class_list":["post-12460","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-constellation-dorion","tag-on-the-moon","tag-venus"],"yoast_head":"\nLa Lune \u00e9tincelle entre V\u00e9nus et la constellation d'Orion<\/title>\n<meta name=\"description\" content=\"Sortie tr\u00e8s matinale pour admirer la Lune d\u00e9croissante qui s'est gliss\u00e9e entre l'\u00e9clatante plan\u00e8te V\u00e9nus et la belle constellation d'Orion de retour.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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