{"id":10291,"date":"2019-02-25T13:33:12","date_gmt":"2019-02-25T13:33:12","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=10291"},"modified":"2019-03-06T12:27:24","modified_gmt":"2019-03-06T12:27:24","slug":"les-telescopes-reseau-speculoos-visent-ngc-6902","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/02\/25\/les-telescopes-reseau-speculoos-visent-ngc-6902\/","title":{"rendered":"Les t\u00e9lescopes du r\u00e9seau SPECULOOS visent NGC 6902"},"content":{"rendered":"

Quatre nouveaux t\u00e9lescopes jumeaux qui constituent le r\u00e9seau SPECULOOS viennent de de fournir leur premi\u00e8re image. Il s’agit de la galaxie NGC 6902.\u00a0<\/strong><\/p>\n

SPECULOOS (Search for habitable Planets EClipsing ULtra-cOOl Stars<\/em>) est un nouveau projet de d\u00e9tection d’exoplan\u00e8tes constitu\u00e9 de quatre t\u00e9lescopes de 1 m\u00e8tre de diam\u00e8tre construits en Allemagne pour 1 million d’euros pi\u00e8ce et install\u00e9s par l’ESO<\/a> au Chili dans le d\u00e9sert d’Atacama \u00e0 l’Observatoire de Paranal<\/a>\u00a0(qui accueille d\u00e9j\u00e0 les 4 VLT<\/a>). Ce r\u00e9seau s’ajoute \u00e0\u00a0NGTS<\/a>\u00a0(Next-Generation Transit Survey<\/em>) dont les 12 t\u00e9lescopes de 20 cm de diam\u00e8tre automatis\u00e9s sont install\u00e9s \u00e0 proximit\u00e9 et comme eux utilise la m\u00e9thode des transits pour d\u00e9couvrir de nouvelles exoplan\u00e8tes.<\/p>\n

\"\"<\/a>
Les t\u00e9lescopes du r\u00e9seau SPECULOOS sont d\u00e9di\u00e9s \u00e0 la recherche d’exoplan\u00e8tes. \u00a9 ESO<\/figcaption><\/figure>\n

Mais la particularit\u00e9 de SPECULOOS c’est que ses 4 t\u00e9lescopes vont traquer les mondes potentiellement habitables autour d’\u00e9toiles tr\u00e8s froides ou m\u00eame de naines brunes<\/a>.\u00a0 \u00a0 \u00a0<\/p>\n

Avant de commencer cette chasse, les quatre t\u00e9lescopes (qui portent les noms des 4 satellites d\u00e9couverts par Galil\u00e9e<\/a> autour de Jupiter<\/a>, \u00e0 savoir Io<\/a>, Europe<\/a>, Ganym\u00e8de<\/a> et Callisto<\/a>) se sont “fait la main” sur la galaxie NGC 6902 observable dans la constellation du Sagittaire<\/a>. C’est le t\u00e9lescope Ganym\u00e8de qui a servi \u00e0 r\u00e9aliser une\u00a0image-test<\/a>\u00a0de cette galaxie spirale d\u00e9couverte en 1836 par John Herschel (le fils de William Herschel<\/a>) et situ\u00e9e \u00e0\u00a0plus de 100 millions d’ann\u00e9es-lumi\u00e8re de nous.<\/p>\n

\"\"<\/a>
L’un des t\u00e9lescopes du r\u00e9seau SPECULOOS a photographi\u00e9 la galaxie NGC 6902. \u00a9 ESO<\/figcaption><\/figure>\n

Le r\u00e9seau de t\u00e9lescopes SPECULOOS install\u00e9 dans le d\u00e9sert d’Atacama et qui scrute le ciel de l’h\u00e9misph\u00e8re sud pourrait \u00eatre compl\u00e9t\u00e9 dans les ann\u00e9es \u00e0 venir par son \u00e9quivalent pour l’h\u00e9misph\u00e8re nord qui serait construit dans les \u00celes Canaries au Pic du Teide<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Quatre nouveaux t\u00e9lescopes jumeaux qui constituent le r\u00e9seau SPECULOOS viennent de de fournir leur premi\u00e8re image. Il s’agit de la galaxie NGC 6902.\u00a0 SPECULOOS (Search for habitable Planets EClipsing ULtra-cOOl Stars) est un nouveau projet de d\u00e9tection d’exoplan\u00e8tes constitu\u00e9 de quatre t\u00e9lescopes de 1 m\u00e8tre de diam\u00e8tre construits en Allemagne pour 1 million d’euros pi\u00e8ce … Continuer la lecture de Les t\u00e9lescopes du r\u00e9seau SPECULOOS visent NGC 6902<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":10292,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[496,633,1229,2635,2636],"class_list":["post-10291","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-constellation-du-sagittaire","tag-eso","tag-galaxie-spirale","tag-ngc-6902","tag-speculoos"],"yoast_head":"\nLes t\u00e9lescopes du r\u00e9seau SPECULOOS visent NGC 6902<\/title>\n<meta name=\"description\" content=\"Quatre nouveaux t\u00e9lescopes jumeaux qui constituent le r\u00e9seau SPECULOOS viennent de de fournir leur premi\u00e8re image. 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