{"id":2458,"date":"2015-04-08T05:06:00","date_gmt":"2015-04-08T05:06:00","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=2458"},"modified":"2015-04-13T04:53:11","modified_gmt":"2015-04-13T04:53:11","slug":"mercure-passe-dans-le-champ-du-coronographe-de-la-sonde-soho","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/08\/mercure-passe-dans-le-champ-du-coronographe-de-la-sonde-soho\/","title":{"rendered":"Mercure passe dans le champ du coronographe de la sonde Soho"},"content":{"rendered":"<p>Le 10 avril <a title=\"V\u00e9nus et Mercure au cr\u00e9puscule\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/01\/13\/venus-et-mercure-au-crepuscule\/\" target=\"_blank\">Mercure<\/a>, la premi\u00e8re plan\u00e8te du Syst\u00e8me solaire, sera en conjonction sup\u00e9rieure avec le <a title=\"Soleil noir le 20 mars : r\u00e9cit d\u2019un chasseur d\u2019\u00e9clipses\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/03\/27\/soleil-noir-le-20-mars-recit-dun-chasseur-declipses\/\" target=\"_blank\">Soleil <\/a>(alignement Terre-Soleil-Mercure). Cela signifie que <a title=\"Zoom sur le sol de Mercure\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/11\/26\/zoom-sol-mercure\/\" target=\"_blank\">Mercure <\/a>est inobservable pour les <a title=\"Lumi\u00e8re rouge pour les astronomes\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/12\/14\/lumiere-rouge-les-astronomes\/\" target=\"_blank\">astronomes <\/a>(malgr\u00e9 une magnitude de -2) puisqu&#8217;elle passe derri\u00e8re le Soleil qui nous aveugle. Il existe malgr\u00e9 tout un moyen pour suivre le d\u00e9placement de cette plan\u00e8te : il suffit de se rendre sur la page du coronographe <a title=\"Derni\u00e8re image obtenue par Lasco C3\" href=\"http:\/\/sohowww.nascom.nasa.gov\/data\/realtime\/c3\/512\/\" target=\"_blank\">Lasco C3<\/a> qui se trouve \u00e0 bord de la sonde <a title=\"Soho\" href=\"http:\/\/sohowww.nascom.nasa.gov\/\" target=\"_blank\">Soho<\/a>.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/lasco06-04-2.jpg\" rel=\"lightbox[2458]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-2460\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/lasco06-04-2-450x450.jpg\" alt=\"lasco06-04-2\" width=\"450\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/lasco06-04-2-450x450.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/lasco06-04-2-150x150.jpg 150w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/lasco06-04-2.jpg 1024w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>L&#8217;observatoire solaire Soho (<em>SOlar and Heliospheric Observatory<\/em>) est un satellite de 1,8 tonne. Plac\u00e9 sur son orbite en 1996, il utilise depuis ses 12 instruments pour \u00e9tudier l&#8217;activit\u00e9 du Soleil.<\/p>\n<p><!--more-->Les coronographes Lasco C2 et C3 (<em>Large Angle and Spectrometric Coronagraph<\/em>) sont destin\u00e9s \u00e0 \u00e9tudier la couronne solaire. Un petit cache central leur permet de masquer le Soleil, trop lumineux, pour voir ce qui se passe autour : <a title=\"\u00e9ruption solaire du 10 septembre\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/09\/11\/eruption-solaire-du-10-septembre\/\" target=\"_blank\">\u00e9ruptions solaires<\/a> bien s\u00fbr, mais \u00e9galement \u00e9toiles, plan\u00e8tes, et parfois <a title=\"C\/2015 D1, la com\u00e8te qui d\u00e9fie le Soleil et les astronomes\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/03\/02\/c2015-d1-la-comete-qui-defie-le-soleil-et-les-astronomes\/\" target=\"_blank\">com\u00e8tes kamikazes<\/a>.<\/p>\n<p>Vous pourrez suivre le passage de Mercure dans le champ de Lasco C3 jusqu&#8217;au 17 avril : la premi\u00e8re plan\u00e8te du Syst\u00e8me solaire est le point le plus lumineux qui sature le capteur (un trait lumineux horizontal accompagne la plan\u00e8te).<\/p>\n<p>Mercure va ensuite continuer de s&#8217;\u00e9loigner et redeviendra visible pour les Terriens en d\u00e9but de soir\u00e9e apr\u00e8s le 20 avril.<\/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>Le 10 avril Mercure, la premi\u00e8re plan\u00e8te du Syst\u00e8me solaire, sera en conjonction sup\u00e9rieure avec le Soleil (alignement Terre-Soleil-Mercure). Cela signifie que Mercure est inobservable pour les astronomes (malgr\u00e9 une magnitude de -2) puisqu&#8217;elle passe derri\u00e8re le Soleil qui nous aveugle. Il existe malgr\u00e9 tout un moyen pour suivre le d\u00e9placement de cette plan\u00e8te : &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/08\/mercure-passe-dans-le-champ-du-coronographe-de-la-sonde-soho\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Mercure passe dans le champ du coronographe de la sonde Soho<\/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":2461,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[868,945,140,760,97],"class_list":["post-2458","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-coronographe","tag-lasco-c3","tag-mercure","tag-soho","tag-soleil"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Mercure passe dans le champ du coronographe de la sonde Soho<\/title>\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\/04\/08\/mercure-passe-dans-le-champ-du-coronographe-de-la-sonde-soho\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mercure passe dans le champ du coronographe de la sonde Soho\" \/>\n<meta property=\"og:description\" content=\"Le 10 avril Mercure, la premi\u00e8re plan\u00e8te du Syst\u00e8me solaire, sera en conjonction sup\u00e9rieure avec le Soleil (alignement Terre-Soleil-Mercure). Cela signifie que Mercure est inobservable pour les astronomes (malgr\u00e9 une magnitude de -2) puisqu&#8217;elle passe derri\u00e8re le Soleil qui nous aveugle. Il existe malgr\u00e9 tout un moyen pour suivre le d\u00e9placement de cette plan\u00e8te : &hellip; Continuer la lecture de Mercure passe dans le champ du coronographe de la sonde Soho &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/08\/mercure-passe-dans-le-champ-du-coronographe-de-la-sonde-soho\/\" \/>\n<meta property=\"og:site_name\" content=\"CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel\" \/>\n<meta property=\"article:published_time\" content=\"2015-04-08T05:06:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-04-13T04:53:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/lasco06-04.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\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\/04\/08\/mercure-passe-dans-le-champ-du-coronographe-de-la-sonde-soho\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/08\/mercure-passe-dans-le-champ-du-coronographe-de-la-sonde-soho\/\",\"name\":\"Mercure passe dans le champ du coronographe de la sonde Soho\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/08\/mercure-passe-dans-le-champ-du-coronographe-de-la-sonde-soho\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/08\/mercure-passe-dans-le-champ-du-coronographe-de-la-sonde-soho\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/lasco06-04.jpg\",\"datePublished\":\"2015-04-08T05:06:00+00:00\",\"dateModified\":\"2015-04-13T04:53:11+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#\/schema\/person\/62b391b709c307783237b759b62731ea\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/08\/mercure-passe-dans-le-champ-du-coronographe-de-la-sonde-soho\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/08\/mercure-passe-dans-le-champ-du-coronographe-de-la-sonde-soho\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/lasco06-04.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/lasco06-04.jpg\",\"width\":1024,\"height\":1024},{\"@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. 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