{"id":5543,"date":"2016-05-09T13:23:38","date_gmt":"2016-05-09T13:23:38","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=5543"},"modified":"2016-05-16T08:20:58","modified_gmt":"2016-05-16T08:20:58","slug":"vieille-lune-very-large-telescope-chili","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/05\/09\/vieille-lune-very-large-telescope-chili\/","title":{"rendered":"Vieille Lune depuis le Very Large Telescope au Chili"},"content":{"rendered":"<p><strong>L&#8217;astrophotographe\u00a0Petr Hor\u00e1lek a saisi la vieille Lune et la plan\u00e8te V\u00e9nus \u00e0 l&#8217;aube depuis les coupoles du VLT au Cerro Paranal, dans les Andes chiliennes.<\/strong><\/p>\n<p>Qu&#8217;est-ce que la vieille Lune ? Il s&#8217;agit du mince croissant que l&#8217;on observe \u00e0 l&#8217;aube dans les jours qui pr\u00e9c\u00e8dent la Nouvelle Lune. \u00c0 l&#8217;inverse on parle de<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/20\/le-retour-dune-jeune-lune-agee-de-24-heures\/\" target=\"_blank\"> jeune Lune <\/a>pour le croissant du soir juste apr\u00e8s la Nouvelle Lune.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" src=\"https:\/\/player.vimeo.com\/video\/134736291\" width=\"640\" height=\"480\" frameborder=\"0\" 0=\"webkitallowfullscreen\" 1=\"mozallowfullscreen\" 2=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p>Petr Hor\u00e1lek est un astrophotographe dont je vous ai d\u00e9j\u00e0 pr\u00e9sent\u00e9 deux tr\u00e8s belles images : l&#8217;une nous r\u00e9v\u00e9lait\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/01\/09\/les-beautes-du-ciel-nocturne-dans-le-desert-du-kalahari\/\" target=\"_blank\">les beaut\u00e9s du ciel nocturne dans le d\u00e9sert du Kalahari<\/a>, l&#8217;autre une <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/01\/26\/26-janvier-2015-feerie-cosmique-dans-le-ciel-de-la-silla\/\" target=\"_blank\">f\u00e9erie cosmique dans le ciel de La Silla<\/a>. Le clich\u00e9 ci-dessous pr\u00e9sent\u00e9 par l&#8217;<a href=\"https:\/\/www.eso.org\/public\/france\/images\/potw1616a\/\" target=\"_blank\">ESO<\/a> a \u00e9t\u00e9 fait depuis le Cerro Paranal, ce sommet des Andes chiliennes (2635 m) qui a \u00e9t\u00e9 aras\u00e9 pour y construire les 4 coupoles du <em><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/02\/02\/site-very-large-telescope-chili-de-satellite\/\" target=\"_blank\">Very Large Telescope<\/a><\/em> qui abritent chacune un r\u00e9flecteur de 8,2 m de diam\u00e8tre.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/lune_venus2.jpg\"  rel=\"lightbox[5543] attachment wp-att-5545\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-5545\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/lune_venus2-450x300.jpg\" alt=\"lune_venus2\" width=\"450\" height=\"300\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/lune_venus2-450x300.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/lune_venus2-768x512.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/lune_venus2-1024x683.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/lune_venus2.jpg 1350w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Ces 4 t\u00e9lescopes g\u00e9ants peuvent \u00eatre coupl\u00e9s \u00e0 4 t\u00e9lescopes auxiliaires mobiles de 1,8 m de diam\u00e8tre de fa\u00e7on \u00e0\u00a0r\u00e9aliser un interf\u00e9rom\u00e8tre g\u00e9ant, le <a href=\"https:\/\/www.eso.org\/sci\/facilities\/paranal\/telescopes\/vlti.html\" target=\"_blank\">VLTI<\/a>, capable d\u2019offrir des vues de l\u2019Univers 25 fois plus pr\u00e9cises qu\u2019avec un seul des t\u00e9lescopes.<!--more--><\/p>\n<p>Le clich\u00e9 de Petr Hor\u00e1lek nous montre la vieille Lune surmont\u00e9e de la plan\u00e8te V\u00e9nus avec au premier plan la coupole de l&#8217;un de ces t\u00e9lescopes auxiliaires. Juste \u00e0 c\u00f4t\u00e9 deux photographes ont install\u00e9 leur mat\u00e9riel : Babak Tafreshi (fondateur de <a href=\"http:\/\/twanight.org\/newTWAN\/index.asp\" target=\"_blank\">TWAN<\/a> et auteur entre autres d\u2019une <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/02\/13\/en-video-le-kilimanjaro-sous-les-etoiles\/\" target=\"_blank\">vid\u00e9o du Kilimanjaro sous les \u00e9toiles<\/a>) et Yuri Beletsky \u00a0qui avait r\u00e9alis\u00e9 il y a un peu moins d&#8217;un an une extraordinaire image du rapprochement apparent entre <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/07\/19\/c2014-q1-panstarrs-la-comete-qui-a-croise-la-lune\/\" target=\"_blank\">la com\u00e8te C\/2014 Panstarrs et le fin croissant de Lune<\/a>.<\/p>\n<p>Ces trois photographes r\u00e9alisent actuellement des images qui serviront \u00e0 cr\u00e9er des spectacles audiovisuels dans le futur <a href=\"https:\/\/supernova.eso.org\/\" target=\"_blank\">plan\u00e9tarium Supernova<\/a> actuellement en construction au si\u00e8ge de l&#8217;ESO \u00e0 Garching (Allemagne).<\/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>L&#8217;astrophotographe\u00a0Petr Hor\u00e1lek a saisi la vieille Lune et la plan\u00e8te V\u00e9nus \u00e0 l&#8217;aube depuis les coupoles du VLT au Cerro Paranal, dans les Andes chiliennes. Qu&#8217;est-ce que la vieille Lune ? Il s&#8217;agit du mince croissant que l&#8217;on observe \u00e0 l&#8217;aube dans les jours qui pr\u00e9c\u00e8dent la Nouvelle Lune. \u00c0 l&#8217;inverse on parle de jeune &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/05\/09\/vieille-lune-very-large-telescope-chili\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Vieille Lune depuis le Very Large Telescope au Chili<\/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":5544,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[83],"tags":[841,1444,1420,1602,839,1032,1016],"class_list":["post-5543","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-la-lune","tag-babak-tafreshi","tag-cerro-paranal","tag-petr-horalek","tag-planetarium-supernova","tag-twan","tag-vieille-lune","tag-yuri-beletsky"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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