{"id":3710,"date":"2015-10-22T05:02:18","date_gmt":"2015-10-22T05:02:18","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=3710"},"modified":"2015-11-01T07:12:04","modified_gmt":"2015-11-01T07:12:04","slug":"la-lunette-meridienne-de-lobservatoire-de-besancon","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/","title":{"rendered":"La lunette m\u00e9ridienne de l&#8217;Observatoire de Besan\u00e7on"},"content":{"rendered":"<p><strong>Con\u00e7ue au XIXe si\u00e8cle pour l&#8217;astronomie de position, la lunette m\u00e9ridienne est encore pr\u00e9sente dans certains observatoires comme celui de Besan\u00e7on.<\/strong><\/p>\n<p>Depuis l&#8217;Antiquit\u00e9 les <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/12\/14\/lumiere-rouge-les-astronomes\/\" target=\"_blank\">astronomes <\/a>\u00e9tudient la position des astres (d&#8217;o\u00f9 le nom d&#8217;astronomie de position) et tentent de mesurer le plus pr\u00e9cis\u00e9ment possible ces positions, une science appel\u00e9e l&#8217;astrom\u00e9trie. De telles \u00e9tudes \u00e9taient indispensables pour \u00e9tablir la mesure du temps jusqu&#8217;\u00e0 l&#8217;apparition des horloges \u00e0 quartz et atomiques.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1.jpg\" rel=\"lightbox[3710]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-3712\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1-450x324.jpg\" alt=\"meridienne1\" width=\"450\" height=\"324\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1-450x324.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1-1024x737.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1.jpg 1250w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Une lunette m\u00e9ridienne est une <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/05\/bien-choisir-sa-premiere-lunette-astronomique\/\" target=\"_blank\">lunette astronomique<\/a> dont les mouvements sont limit\u00e9s au plan m\u00e9ridien, un plan vertical orient\u00e9 nord-sud. En observant l&#8217;instant du passage au m\u00e9ridien d&#8217;une <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/09\/19\/en-video-scintillaris-lhistoire-dun-cueilleur-detoiles\/\" target=\"_blank\">\u00e9toile <\/a>dont on conna\u00eet la position, on peut fabriquer le temps, c&#8217;est-\u00e0-dire corriger l&#8217;heure d&#8217;une horloge (si l&#8217;\u00e9toile passe trop t\u00f4t dans le champ de la lunette c&#8217;est que l&#8217;horloge retarde, si l&#8217;\u00e9toile passe trop tard c&#8217;est que l&#8217;horloge avance).<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne2.jpg\" rel=\"lightbox[3710]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-3716\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne2-450x339.jpg\" alt=\"meridienne2\" width=\"450\" height=\"339\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne2-450x339.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne2-1024x771.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne2.jpg 1195w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p><!--more-->La lunette m\u00e9ridienne de l&#8217;<a href=\"http:\/\/theta.obs-besancon.fr\/\" target=\"_blank\">Observatoire de Besan\u00e7on<\/a> fut mise en service en 1886 pour r\u00e9pondre aux besoins des nombreux horlogers de la r\u00e9gion.<\/p>\n<p>En 1913 c&#8217;est un \u00e9metteur T. S. F. (Transmission Sans Fil) qui transmet l&#8217;heure de l&#8217;Observatoire de Paris. La lunette m\u00e9ridienne de Besan\u00e7on devient alors un instrument d\u00e9di\u00e9 \u00e0 la r\u00e9alisation de catalogues de position d&#8217;\u00e9toiles, une activit\u00e9 qui prendra fin dans les ann\u00e9es 1980 avec le lancement de satellites d&#8217;astrom\u00e9trie comme <a href=\"http:\/\/www.futura-sciences.com\/magazines\/espace\/infos\/dico\/d\/univers-hipparcos-4163\/\" target=\"_blank\">Hipparcos <\/a>et <a href=\"http:\/\/www.futura-sciences.com\/magazines\/espace\/infos\/actu\/d\/astronomie-missions-gaia-satellite-astrometrie-europeen-48114\/\" target=\"_blank\">Gaia<\/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>Con\u00e7ue au XIXe si\u00e8cle pour l&#8217;astronomie de position, la lunette m\u00e9ridienne est encore pr\u00e9sente dans certains observatoires comme celui de Besan\u00e7on. Depuis l&#8217;Antiquit\u00e9 les astronomes \u00e9tudient la position des astres (d&#8217;o\u00f9 le nom d&#8217;astronomie de position) et tentent de mesurer le plus pr\u00e9cis\u00e9ment possible ces positions, une science appel\u00e9e l&#8217;astrom\u00e9trie. De telles \u00e9tudes \u00e9taient indispensables &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">La lunette m\u00e9ridienne de l&#8217;Observatoire de Besan\u00e7on<\/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":3712,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[87],"tags":[1257,1259,1258,1255,1256],"class_list":["post-3710","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-hommes-et-le-ciel","tag-astronomie-de-position","tag-gaia","tag-hipparcos","tag-lunette-meridienne","tag-observatoire-de-besancon"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La lunette m\u00e9ridienne de l&#039;Observatoire de Besan\u00e7on<\/title>\n<meta name=\"description\" content=\"Con\u00e7ue au XIXe si\u00e8cle pour l&#039;astronomie de position, la lunette m\u00e9ridienne est encore pr\u00e9sente dans certains observatoires comme celui de Besan\u00e7on.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La lunette m\u00e9ridienne de l&#039;Observatoire de Besan\u00e7on\" \/>\n<meta property=\"og:description\" content=\"Con\u00e7ue au XIXe si\u00e8cle pour l&#039;astronomie de position, la lunette m\u00e9ridienne est encore pr\u00e9sente dans certains observatoires comme celui de Besan\u00e7on.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/\" \/>\n<meta property=\"og:site_name\" content=\"CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel\" \/>\n<meta property=\"article:published_time\" content=\"2015-10-22T05:02:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-11-01T07:12:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1250\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Jean-Baptiste FELDMANN\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jean-Baptiste FELDMANN\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/\",\"name\":\"La lunette m\u00e9ridienne de l'Observatoire de Besan\u00e7on\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1.jpg\",\"datePublished\":\"2015-10-22T05:02:18+00:00\",\"dateModified\":\"2015-11-01T07:12:04+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#\/schema\/person\/62b391b709c307783237b759b62731ea\"},\"description\":\"Con\u00e7ue au XIXe si\u00e8cle pour l'astronomie de position, la lunette m\u00e9ridienne est encore pr\u00e9sente dans certains observatoires comme celui de Besan\u00e7on.\",\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1.jpg\",\"width\":1250,\"height\":900},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#website\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/\",\"name\":\"CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel\",\"description\":\"&quot;J&#039;ai en moi un besoin terrible. Dirais-je le mot? La religion. Alors, je sors la nuit et je peins des \u00e9toiles.&quot;  Vincent van Gogh\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#\/schema\/person\/62b391b709c307783237b759b62731ea\",\"name\":\"Jean-Baptiste FELDMANN\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/41f96607fde7a81a14570eec74177c42?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/41f96607fde7a81a14570eec74177c42?s=96&d=mm&r=g\",\"caption\":\"Jean-Baptiste FELDMANN\"},\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/author\/jbfe\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"La lunette m\u00e9ridienne de l'Observatoire de Besan\u00e7on","description":"Con\u00e7ue au XIXe si\u00e8cle pour l'astronomie de position, la lunette m\u00e9ridienne est encore pr\u00e9sente dans certains observatoires comme celui de Besan\u00e7on.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/","og_locale":"fr_FR","og_type":"article","og_title":"La lunette m\u00e9ridienne de l'Observatoire de Besan\u00e7on","og_description":"Con\u00e7ue au XIXe si\u00e8cle pour l'astronomie de position, la lunette m\u00e9ridienne est encore pr\u00e9sente dans certains observatoires comme celui de Besan\u00e7on.","og_url":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/","og_site_name":"CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel","article_published_time":"2015-10-22T05:02:18+00:00","article_modified_time":"2015-11-01T07:12:04+00:00","og_image":[{"width":1250,"height":900,"url":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1.jpg","type":"image\/jpeg"}],"author":"Jean-Baptiste FELDMANN","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"Jean-Baptiste FELDMANN","Dur\u00e9e de lecture estim\u00e9e":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/","url":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/","name":"La lunette m\u00e9ridienne de l'Observatoire de Besan\u00e7on","isPartOf":{"@id":"https:\/\/blogs.futura-sciences.com\/feldmann\/#website"},"primaryImageOfPage":{"@id":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/#primaryimage"},"image":{"@id":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/#primaryimage"},"thumbnailUrl":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1.jpg","datePublished":"2015-10-22T05:02:18+00:00","dateModified":"2015-11-01T07:12:04+00:00","author":{"@id":"https:\/\/blogs.futura-sciences.com\/feldmann\/#\/schema\/person\/62b391b709c307783237b759b62731ea"},"description":"Con\u00e7ue au XIXe si\u00e8cle pour l'astronomie de position, la lunette m\u00e9ridienne est encore pr\u00e9sente dans certains observatoires comme celui de Besan\u00e7on.","inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/22\/la-lunette-meridienne-de-lobservatoire-de-besancon\/#primaryimage","url":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1.jpg","contentUrl":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/09\/meridienne1.jpg","width":1250,"height":900},{"@type":"WebSite","@id":"https:\/\/blogs.futura-sciences.com\/feldmann\/#website","url":"https:\/\/blogs.futura-sciences.com\/feldmann\/","name":"CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel","description":"&quot;J&#039;ai en moi un besoin terrible. Dirais-je le mot? La religion. Alors, je sors la nuit et je peins des \u00e9toiles.&quot;  Vincent van Gogh","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blogs.futura-sciences.com\/feldmann\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Person","@id":"https:\/\/blogs.futura-sciences.com\/feldmann\/#\/schema\/person\/62b391b709c307783237b759b62731ea","name":"Jean-Baptiste FELDMANN","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/blogs.futura-sciences.com\/feldmann\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/41f96607fde7a81a14570eec74177c42?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/41f96607fde7a81a14570eec74177c42?s=96&d=mm&r=g","caption":"Jean-Baptiste FELDMANN"},"url":"https:\/\/blogs.futura-sciences.com\/feldmann\/author\/jbfe\/"}]}},"_links":{"self":[{"href":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-json\/wp\/v2\/posts\/3710","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-json\/wp\/v2\/comments?post=3710"}],"version-history":[{"count":5,"href":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-json\/wp\/v2\/posts\/3710\/revisions"}],"predecessor-version":[{"id":3717,"href":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-json\/wp\/v2\/posts\/3710\/revisions\/3717"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-json\/wp\/v2\/media\/3712"}],"wp:attachment":[{"href":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-json\/wp\/v2\/media?parent=3710"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-json\/wp\/v2\/categories?post=3710"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-json\/wp\/v2\/tags?post=3710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}