{"id":3898,"date":"2015-10-27T05:41:25","date_gmt":"2015-10-27T05:41:25","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=3898"},"modified":"2015-11-02T05:58:27","modified_gmt":"2015-11-02T05:58:27","slug":"la-monture-du-telescope-spatial-james-webb-est-prete","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/27\/la-monture-du-telescope-spatial-james-webb-est-prete\/","title":{"rendered":"La monture du t\u00e9lescope spatial James Webb est pr\u00eate"},"content":{"rendered":"<p><strong>La construction du <em>James Webb Space Telescope <\/em>se poursuit avec la livraison de la structure qui va supporter le miroir de 6,5 m\u00e8tres de diam\u00e8tre.<\/strong><\/p>\n<p>Alors que les dix-huit segments en b\u00e9ryllium recouvert d\u2019or qui vont former le <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/07\/24\/le-telescope-spatial-james-webb-prend-forme\/\" target=\"_blank\">miroir principal du JWST<\/a> sont en cours de r\u00e9alisation, c&#8217;est la monture de ce futur t\u00e9lescope spatial qui est arriv\u00e9e au <em><a href=\"https:\/\/www.nasa.gov\/centers\/goddard\/home\/index.html\" target=\"_blank\">Goddard Space Flight Center<\/a><\/em> \u00e0 Greenbelt\u00a0 dans le Maryland, l\u00e0 o\u00f9 la <a href=\"https:\/\/www.nasa.gov\/\" target=\"_blank\">NASA<\/a> dispose de la plus grande salle blanche du monde (1200 m\u00b2) pour assembler et tester ses syst\u00e8mes spatiaux.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/jwst2.jpg\" rel=\"lightbox[3898]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-3900\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/jwst2-324x450.jpg\" alt=\"jwst2\" width=\"324\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/jwst2-324x450.jpg 324w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/jwst2-738x1024.jpg 738w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/jwst2.jpg 865w\" sizes=\"auto, (max-width: 324px) 100vw, 324px\" \/><\/a><\/p>\n<p>Successeur du <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/24\/en-video-science-et-poesie-pour-feter-le-telescope-hubble\/\" target=\"_blank\">t\u00e9lescope spatial Hubble<\/a>, le <em><a href=\"http:\/\/www.jwst.nasa.gov\/\" target=\"_blank\">James Webb Space Telescope<\/a> <\/em>(nomm\u00e9 en en hommage \u00e0 James Edwin Webb, administrateur de la NASA entre 1961 et 1968), sera \u00e9quip\u00e9 d&#8217;un miroir trois fois plus grand dont le rev\u00eatement de surface permettra d&#8217;\u00e9tudier le rayonnement infrarouge des astres les plus lointains de l\u2019Univers, comme l\u2019a fait avant lui le <a href=\"http:\/\/www.futura-sciences.com\/magazines\/espace\/infos\/actu\/d\/astronautique-fin-partie-telescope-spatial-herschel-46219\/\" target=\"_blank\">t\u00e9lescope spatial Herschel<\/a>.<\/p>\n<p>Comme l&#8217;a rappel\u00e9 l&#8217;ancien astronaute\u00a0<span class=\"notranslate\">John Grunsfeld (qui est d\u00e9sormais administrateur associ\u00e9 \u00e0 la Direction des missions scientifiques de la NASA),<\/span> &#8220;<em>le JWST peut remonter beaucoup plus loin dans le temps et dans l&#8217;espace que le t\u00e9lescope Hubble, de fa\u00e7on \u00e0 nous montrer les premi\u00e8res <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/09\/19\/en-video-scintillaris-lhistoire-dun-cueilleur-detoiles\/\" target=\"_blank\">\u00e9toiles <\/a>et <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/08\/12\/decouverte-dun-anneau-de-galaxies-geant\/\" target=\"_blank\">galaxies <\/a>form\u00e9es dans l&#8217;Univers&#8221;.<\/em><\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/jwst3.jpg\" rel=\"lightbox[3898]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-3901\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/jwst3-450x338.jpg\" alt=\"jwst3\" width=\"450\" height=\"338\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/jwst3-450x338.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/jwst3-1024x769.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/jwst3.jpg 1200w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Financ\u00e9 principalement par les Etats-Unis, le <em>James Webb Space Telescope<\/em> (dont on voit une repr\u00e9sentation d&#8217;artiste ci-dessus)devrait co\u00fbter la bagatelle de 10 milliards de dollars. Cet instrument de plus de 6 tonnes dont la temp\u00e9rature doit \u00eatre maintenue \u00e0 -223\u00b0C pour permettre les observations en infrarouge sera lanc\u00e9 en 2018 depuis la base de <a href=\"http:\/\/www.cnes-csg.fr\/web\/CNES-CSG-fr\/10805-2013-le-centre-spatial-guyanais.php\" target=\"_blank\">Kourou <\/a>en Guyane \u00e0 l\u2019aide d\u2019une fus\u00e9e <a href=\"http:\/\/www.futura-sciences.com\/magazines\/espace\/infos\/dico\/d\/univers-ariane-5-3455\/\" target=\"_blank\">Ariane 5<\/a>. Le JWST sera plac\u00e9 sur une orbite \u00e0 1,5 million de kilom\u00e8tres de la Terre pour mener \u00e0 bien ses observations.<\/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>La construction du James Webb Space Telescope se poursuit avec la livraison de la structure qui va supporter le miroir de 6,5 m\u00e8tres de diam\u00e8tre. Alors que les dix-huit segments en b\u00e9ryllium recouvert d\u2019or qui vont former le miroir principal du JWST sont en cours de r\u00e9alisation, c&#8217;est la monture de ce futur t\u00e9lescope spatial &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/27\/la-monture-du-telescope-spatial-james-webb-est-prete\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">La monture du t\u00e9lescope spatial James Webb est pr\u00eate<\/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":3899,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[1304,1303,741,486,821,544],"class_list":["post-3898","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-goddard-space-flight-center","tag-john-grunsfeld","tag-jwst","tag-nasa","tag-telescope-spatial-herschel","tag-telescope-spatial-hubble"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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