{"id":3964,"date":"2015-10-28T06:57:15","date_gmt":"2015-10-28T06:57:15","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=3964"},"modified":"2015-11-03T05:51:43","modified_gmt":"2015-11-03T05:51:43","slug":"en-video-le-centre-galactique-passe-au-zenith-du-vlt","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/28\/en-video-le-centre-galactique-passe-au-zenith-du-vlt\/","title":{"rendered":"En vid\u00e9o : le centre galactique passe au z\u00e9nith du VLT"},"content":{"rendered":"<p><strong>Rendez-vous au VLT pour voir passer au z\u00e9nith la constellation du Sagittaire, direction dans laquelle se trouve le centre de notre galaxie. \u00a0<\/strong><\/p>\n<p>Le <a href=\"http:\/\/www.eso.org\/public\/france\/teles-instr\/paranal\/\" target=\"_blank\">Very Large Telescope<\/a>,\u00a0\u00a0un ensemble de quatre t\u00e9lescopes g\u00e9ants de 8,2 m\u00e8tres de diam\u00e8tre (accompagn\u00e9s de quatre t\u00e9lescopes auxiliaires mobiles de 1,8 m\u00e8tre), est le fleuron de l&#8217;Observatoire Europ\u00e9en Austral (ESO). Ces instruments sont install\u00e9s sur le\u00a0Cerro Paranal dans le d\u00e9sert d&#8217;Atacama au nord du Chili, \u00e0 une altitude de 2 635 m.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" src=\"https:\/\/player.vimeo.com\/video\/68260417\" width=\"500\" height=\"500\" frameborder=\"0\" 0=\"webkitallowfullscreen\" 1=\"mozallowfullscreen\" 2=\"allowfullscreen\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p>Alors qu&#8217;en France la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/10\/31\/mars-sagittaire\/\" target=\"_blank\">constellation du Sagittaire<\/a>\u00a0est tr\u00e8s basse sur l&#8217;horizon, elle passe au z\u00e9nith du\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/03\/10\/avec-muse-le-vlt-surpasse-le-telescope-spatial-hubble\/\" target=\"_blank\">VLT<\/a>, implant\u00e9 par 24 degr\u00e9s de latitude sud. C&#8217;est d&#8217;ailleurs depuis le site du Paranal qu&#8217;on a pu r\u00e9aliser <a href=\"http:\/\/www.futura-sciences.com\/magazines\/espace\/infos\/actu\/d\/astronomie-poster-geant-centre-galactique-9-milliards-pixels-42179\/\" target=\"_blank\">un poster g\u00e9ant du centre galactique de 9 milliards de pixels<\/a> en utilisant le t\u00e9lescope infrarouge <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/02\/17\/le-telescope-vista-rend-la-nebuleuse-trifide-transparente\/\" target=\"_blank\">Vista<\/a>.<\/p>\n<p><!--more-->C&#8217;est dans la direction du Sagittaire, \u00e0 un peu plus de 26 000 ann\u00e9es-lumi\u00e8re, que se trouve le centre de notre galaxie, la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/05\/du-mont-elbrouz-jaillissent-les-etoiles-de-la-voie-lactee\/\" target=\"_blank\">Voie lact\u00e9e<\/a>. M\u00eame lorsqu&#8217;il passe au z\u00e9nith du <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/09\/09\/insolite-un-drone-survole-le-very-large-telescope\/\" target=\"_blank\">VLT<\/a>, le centre galactique\u00a0n&#8217;est pas observable dans le spectre visible \u00e0 cause de la poussi\u00e8re galactique. Il faut donc scruter cette r\u00e9gion c\u00e9leste dans les courtes longueurs d&#8217;ondes (comme les rayons gamma) ou dans les grandes longueurs d&#8217;ondes (infrarouge, ondes radio&#8230;).<\/p>\n<p><a href=\"http:\/\/sguisard.astrosurf.com\/\" target=\"_blank\">St\u00e9phane Guisard<\/a>, ing\u00e9nieur responsable de l&#8217;optique du VLT et astrophotographe de talent, est l&#8217;auteur du <em>time-lapse<\/em> ci-dessus, dans lequel on assiste en acc\u00e9l\u00e9r\u00e9 \u00e0 la rotation nocturne du centre galactique au-dessus des coupoles qui abritent les 4 t\u00e9lescopes g\u00e9ants.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Rendez-vous au VLT pour voir passer au z\u00e9nith la constellation du Sagittaire, direction dans laquelle se trouve le centre de notre galaxie. \u00a0 Le Very Large Telescope,\u00a0\u00a0un ensemble de quatre t\u00e9lescopes g\u00e9ants de 8,2 m\u00e8tres de diam\u00e8tre (accompagn\u00e9s de quatre t\u00e9lescopes auxiliaires mobiles de 1,8 m\u00e8tre), est le fleuron de l&#8217;Observatoire Europ\u00e9en Austral (ESO). Ces &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/28\/en-video-le-centre-galactique-passe-au-zenith-du-vlt\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">En vid\u00e9o : le centre galactique passe au z\u00e9nith du VLT<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":3969,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[84],"tags":[635,496,633,894,1315,991,1013,637,166],"class_list":["post-3964","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciel-etoile","tag-chili","tag-constellation-du-sagittaire","tag-eso","tag-paranal","tag-stephane-guisard","tag-time-lapse","tag-video","tag-vlt","tag-voie-lactee"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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