{"id":2636,"date":"2015-04-27T16:43:51","date_gmt":"2015-04-27T16:43:51","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=2636"},"modified":"2015-05-31T08:02:45","modified_gmt":"2015-05-31T08:02:45","slug":"triplet-de-galaxies-dans-la-constellation-du-lion","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/27\/triplet-de-galaxies-dans-la-constellation-du-lion\/","title":{"rendered":"Triplet de galaxies dans la constellation du Lion"},"content":{"rendered":"

Blottie entre le Cancer et la Vierge, la constellation du Lion est bien connue des astronomes<\/a>. D’abord parce que son \u00e9toile la plus brillante n’est autre que la c\u00e9l\u00e8bre R\u00e9gulus<\/a>, qui forme avec Arcturus (Bouvier) et Spica<\/a>\u00a0(Vierge)\u00a0le triangle de printemps (\u00e0 ne pas confondre avec le triangle d’\u00e9t\u00e9<\/a>).<\/p>\n

\"triplet<\/a><\/p>\n

Ensuite parce que cette constellation h\u00e9berge un c\u00e9l\u00e8bre trio de galaxies surnomm\u00e9 le triplet du Lion<\/a>.<\/p>\n

Sur cette image de Corine Yahia<\/a>, nous avons M 66 en haut \u00e0 gauche, M 65 en dessous et NGC 3628 \u00e0 droite. Messier 66 fut d\u00e9couverte en 1780 par les astronomes Charles Messier et Pierre M\u00e9chain. Il s’agit d’une galaxie spirale interm\u00e9diaire qui pr\u00e9sente une dissym\u00e9trie au niveau de ses bras spiraux, r\u00e9sultat d’une ancienne rencontre avec NGC 3628. Messier 65 est \u00e9galement une galaxie spirale d\u00e9couverte par M\u00e9chain et incorpor\u00e9e ensuite par Messier dans son c\u00e9l\u00e8bre catalogue<\/a>. Un peu plus d\u00e9licate \u00e0 observer que ses deux voisines, NGC 3628 est la troisi\u00e8me spirale du groupe ; elle est \u00e9galement surnomm\u00e9e la galaxie du Hamburger et fut d\u00e9couverte par William Herschel<\/a> 4 ans plus tard.<\/p>\n

Corine Yahia nous explique : “cette image a \u00e9t\u00e9 obtenue en combinant 34 poses de 2 mn faites le 19 mars 2015 \u00e0 Allons (47) et le 11 avril \u00e0 Saucats (33) \u00e0 l’aide d’un bo\u00eetier Canon 350D d\u00e9filtr\u00e9 (muni d’un correcteur de coma). L’appareil photo \u00e9tait install\u00e9 au foyer d’un t\u00e9lescope <\/a>Newton de 150 mm de diam\u00e8tre et 750 mm de focale sur une monture Orion Sirius EQ-G motoris\u00e9e. <\/em><\/p>\n

Passionn\u00e9e d’astronomie\u00a0depuis l’enfance, \u00e2g\u00e9e de 48 ans, cela fait 7 ans que je me suis lanc\u00e9e dans l’astrophotographie. J’\u00e9volue lentement mais s\u00fbrement.\u00a0Je ne ma\u00eetrise le logiciel IRIS que depuis 3 ans. J’ai eu d’excellents professeurs et je recherche encore et toujours des conseils pour m’am\u00e9liorer, surtout dans le traitement d’images.\u00a0<\/em><\/p>\n

Pr\u00e9sidente d’Astronomie Gironde 33<\/a> depuis 5 ans, je m’amuse beaucoup dans ma passion.\u00a0Cerise sur le g\u00e2teau, mon compagnon est aussi astronome amateur… ce qui fait que je n’ai aucune entrave \u00e0 ma pratique, si ce n’est la m\u00e9t\u00e9o assez capricieuse ces derniers mois !”<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Blottie entre le Cancer et la Vierge, la constellation du Lion est bien connue des astronomes. D’abord parce que son \u00e9toile la plus brillante n’est autre que la c\u00e9l\u00e8bre R\u00e9gulus, qui forme avec Arcturus (Bouvier) et Spica\u00a0(Vierge)\u00a0le triangle de printemps (\u00e0 ne pas confondre avec le triangle d’\u00e9t\u00e9). Ensuite parce que cette constellation h\u00e9berge un … Continuer la lecture de Triplet de galaxies dans la constellation du Lion<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":2637,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[84],"tags":[995,372,993,999,996,997,998,371,994,129],"class_list":["post-2636","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciel-etoile","tag-astronomie-gironde-33","tag-constellation-du-lion","tag-corine-yahia","tag-galaxie-du-hamburger","tag-messier-65","tag-messier-66","tag-ngc-3628","tag-regulus","tag-triplet-du-lion","tag-william-herschel"],"yoast_head":"\nTriplet de galaxies dans la constellation du Lion<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/27\/triplet-de-galaxies-dans-la-constellation-du-lion\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Triplet de galaxies dans la constellation du Lion\" \/>\n<meta property=\"og:description\" content=\"Blottie entre le Cancer et la Vierge, la constellation du Lion est bien connue des astronomes. D’abord parce que son \u00e9toile la plus brillante n’est autre que la c\u00e9l\u00e8bre R\u00e9gulus, qui forme avec Arcturus (Bouvier) et Spica\u00a0(Vierge)\u00a0le triangle de printemps (\u00e0 ne pas confondre avec le triangle d’\u00e9t\u00e9). 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