{"id":13216,"date":"2021-01-20T17:25:46","date_gmt":"2021-01-20T17:25:46","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=13216"},"modified":"2021-01-26T18:04:09","modified_gmt":"2021-01-26T18:04:09","slug":"le-cerro-tololo-un-observatoire-dans-la-cordillere-des-andes","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/01\/20\/le-cerro-tololo-un-observatoire-dans-la-cordillere-des-andes\/","title":{"rendered":"Le Cerro Tololo, un observatoire dans la Cordill\u00e8re des Andes"},"content":{"rendered":"<p><strong>L\u2019Observatoire du Cerro Tololo au Chili fait partie du <em>National Optical Astronomy Observatory<\/em>. Il dispose d&#8217;un t\u00e9lescope de quatre m\u00e8tres.\u00a0<\/strong><\/p>\n<h5>Sommet chilien :<\/h5>\n<p>Le CTIO (<em>Cerro Tololo Inter-American Observatory<\/em>) est install\u00e9 \u00e0 2.200 m\u00e8tres d\u2019altitude sur le Cerro Tololo. C\u2019est l\u2019un des sommets qui encadrent la vall\u00e9e de l\u2019Elqui au Chili. L\u2019air y est tr\u00e8s sec et la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/09\/25\/pollution-lumineuse-france-peut-faire-beaucoup-mieux\/\" target=\"_blank\" rel=\"noopener noreferrer\">pollution lumineuse<\/a> absente. C&#8217;est ce qui explique la pr\u00e9sence d\u2019autres installations astronomiques dans la r\u00e9gion. Le <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/astronomie-cure-jouvence-telescope-gemini-sud-27539\/\" target=\"_blank\" rel=\"noopener noreferrer\">Gemini sud<\/a>\u00a0et le\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/02\/07\/video-lsst-large-synoptic-survey-telescope\/\" target=\"_blank\" rel=\"noopener noreferrer\">LSST<\/a>\u00a0(<em>Large Synoptic Survey Telescope<\/em>) sont construits sur un autre sommet, le Cerro Pach\u00f3n. Le <em>Cerro Tololo Inter-American Observatory<\/em> est l&#8217;un des quatre observatoires rassembl\u00e9s au sein du <a href=\"https:\/\/www.noao.edu\/\" target=\"_blank\" rel=\"noopener\">NOAO<\/a>, une institution dont le si\u00e8ge est \u00e0 Tucson, en Arizona.<\/p>\n<figure id=\"attachment_13217\" aria-describedby=\"caption-attachment-13217\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/12\/kpno.jpg\" rel=\"lightbox[13216]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-13217\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/12\/kpno-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/12\/kpno-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2020\/12\/kpno.jpg 700w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-13217\" class=\"wp-caption-text\">L&#8217;Observatoire interam\u00e9ricain du Cerro Tololo domine la Cordill\u00e8re des Andes. \u00a9 KPNO<\/figcaption><\/figure>\n<p>Le CTIO compte une dizaine de coupoles qui abritent des instruments entre 50 centim\u00e8tres et 1,5 m\u00e8tre de diam\u00e8tre. Mais le fleuron de cet observatoire est le t\u00e9lescope Blanco dont on voit la grande coupole sur ce clich\u00e9.<!--more--><span id=\"more-11132\"><\/span><\/p>\n<h5>\u00c0 la recherche de l&#8217;\u00e9nergie sombre :<\/h5>\n<p>Le t\u00e9lescope Blanco a \u00e9t\u00e9 nomm\u00e9 en hommage \u00e0 l\u2019astronome portoricain Victor Manuel Blanco. L&#8217;instrument est dot\u00e9 d\u2019un miroir de 4 m\u00e8tres de diam\u00e8tre. Depuis quelques ann\u00e9es, ce t\u00e9lescope est \u00e9quip\u00e9 d\u2019une tr\u00e8s puissante cam\u00e9ra, la DEC. Avec ses 570 millions de pixels, la <em>Dark-Energy Camera<\/em> est capable de capturer 100.000 galaxies jusqu\u2019\u00e0 8 milliards d\u2019ann\u00e9es-lumi\u00e8re en une seule pose. Cette cam\u00e9ra (maintenue sous vide \u00e0 une temp\u00e9rature de -150\u00b0 C) est comme son nom l\u2019indique d\u00e9di\u00e9e \u00e0 la traque de l\u2019<a title=\"\u00c9nergie sombre et mati\u00e8re noire : \u00e0 la d\u00e9couverte du c\u00f4t\u00e9 obscur de l\u2019Univers\" href=\"http:\/\/www.futura-sciences.com\/videos\/d\/energie-sombre-matiere-noire-decouverte-cote-obscur-univers-1088\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u00e9nergie sombre<\/a>.<\/p>\n<figure id=\"attachment_11133\" aria-describedby=\"caption-attachment-11133\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/08\/cerro.jpg\" rel=\"lightbox[13216]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-11133\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/08\/cerro-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/08\/cerro-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/08\/cerro-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/08\/cerro-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/08\/cerro.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-11133\" class=\"wp-caption-text\">Vu du ciel, l&#8217;Observatoire interam\u00e9ricain du Cerro Tololo.\u00a9 CTIO<\/figcaption><\/figure>\n<p>Il s&#8217;agit d&#8217;une forme d&#8217;\u00e9nergie hypoth\u00e9tique qui a \u00e9t\u00e9 imagin\u00e9e depuis quelques ann\u00e9es pour expliquer l&#8217;acc\u00e9l\u00e9ration de l&#8217;expansion de l&#8217;Univers. La DEC a son \u00e9quivalent dans l\u2019h\u00e9misph\u00e8re nord : c&#8217;est <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/08\/19\/desi-un-nouvel-instrument-va-traquer-lenergie-noire\/\" target=\"_blank\" rel=\"noopener noreferrer\">DESI<\/a>, qui est install\u00e9 au <em>Kitt Peak National Observatory<\/em> en Arizona. Le 27 d\u00e9cembre 2014, la DEC avait magnifiquement immortalis\u00e9 le passage d\u2019un astre chevelu. C\u2019\u00e9tait la cinqui\u00e8me com\u00e8te d\u00e9couverte par l\u2019astronome amateur australien Terry Lovejoy, <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/03\/04\/une-image-epoustouflante-de-la-comete-c2014-q2-lovejoy\/\" target=\"_blank\" rel=\"noopener noreferrer\">C\/2014 Q2 Lovejoy<\/a>.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/03\/lovejoy.jpg\" rel=\"lightbox[13216]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-2040\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/03\/lovejoy-450x298.jpg\" alt=\"\" width=\"450\" height=\"298\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/03\/lovejoy-450x298.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/03\/lovejoy-1024x679.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/03\/lovejoy.jpg 1356w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<h5>Vous pourriez aimer :<\/h5>\n<ul>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/04\/18\/leso-fete-les-50-ans-de-son-observatoire-de-la-silla\/\" target=\"_blank\" rel=\"noopener\">L&#8217;ESO f\u00eate les 50 ans de son observatoire de La Silla<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/11\/25\/a-dijon-la-belle-renaissance-dun-observatoire-oublie\/\" target=\"_blank\" rel=\"noopener\">\u00c0 Dijon, la belle renaissance d&#8217;un observatoire oubli\u00e9<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/01\/17\/vlt-observatoire-desert-atacama\/\" target=\"_blank\" rel=\"noopener\">Le VLT, un observatoire au c\u0153ur du d\u00e9sert d&#8217;Atacama<\/a><\/li>\n<\/ul>\n<p>Suivez l\u2019actualit\u00e9 astronomique en vous abonnant \u00e0 Cielmania sur\u00a0<a href=\"https:\/\/www.facebook.com\/cielmania\/\" target=\"_blank\" rel=\"noopener noreferrer\">Facebook<\/a>\u00a0ou\u00a0<a href=\"https:\/\/twitter.com\/cielmania\" target=\"_blank\" rel=\"noopener noreferrer\">Twitter<\/a>.<\/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\u2019Observatoire du Cerro Tololo au Chili fait partie du National Optical Astronomy Observatory. Il dispose d&#8217;un t\u00e9lescope de quatre m\u00e8tres.\u00a0 Sommet chilien : Le CTIO (Cerro Tololo Inter-American Observatory) est install\u00e9 \u00e0 2.200 m\u00e8tres d\u2019altitude sur le Cerro Tololo. C\u2019est l\u2019un des sommets qui encadrent la vall\u00e9e de l\u2019Elqui au Chili. L\u2019air y est tr\u00e8s &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/01\/20\/le-cerro-tololo-un-observatoire-dans-la-cordillere-des-andes\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Le Cerro Tololo, un observatoire dans la Cordill\u00e8re des Andes<\/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":13217,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[87],"tags":[876,1372,2710],"class_list":["post-13216","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-hommes-et-le-ciel","tag-cerro-tololo","tag-noao","tag-telescope-blanco"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Le Cerro Tololo, un observatoire dans la Cordill\u00e8re des Andes<\/title>\n<meta name=\"description\" content=\"L\u2019Observatoire du Cerro Tololo au Chili fait partie du National Optical Astronomy Observatory. 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