{"id":8523,"date":"2017-11-19T18:24:16","date_gmt":"2017-11-19T18:24:16","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=8523"},"modified":"2017-11-30T17:24:43","modified_gmt":"2017-11-30T17:24:43","slug":"jeune-croissant-de-lune-age-de-29-heures","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/11\/19\/jeune-croissant-de-lune-age-de-29-heures\/","title":{"rendered":"Jeune croissant de Lune \u00e2g\u00e9 de 29 heures"},"content":{"rendered":"<p><strong>29 heures apr\u00e8s la Nouvelle Lune, voici le retour d&#8217;un jeune croissant d\u00e9form\u00e9 par l&#8217;atmosph\u00e8re dans la soir\u00e9e du 19 novembre.<\/strong><\/p>\n<p>L&#8217;avant-derni\u00e8re lunaison de cette ann\u00e9e 2017 a d\u00e9but\u00e9 dans la soir\u00e9e du dimanche 19 novembre avec la br\u00e8ve apparition d&#8217;un jeune croissant sur l&#8217;horizon OUEST, une quarantaine de minutes apr\u00e8s <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/11\/09\/coucher-de-soleil-derriere-lobservatoire-du-pic-du-midi\/\" target=\"_blank\" rel=\"noopener\">le coucher du Soleil<\/a>. Comme ce jeune croissant \u00e9tait tr\u00e8s proche de l&#8217;horizon, il est d\u00e9form\u00e9 par l&#8217;atmosph\u00e8re (un ph\u00e9nom\u00e8ne qu&#8217;on peut d\u00e9couvrir sur <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/01\/04\/latmosphere-deforme-un-jeune-croissant-de-lune\/\" target=\"_blank\" rel=\"noopener\">une spectaculaire image<\/a> r\u00e9alis\u00e9e par l\u2019astrophotographe Petr Hor\u00e1lek dans le d\u00e9sert d&#8217;Atacama).<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/11\/croissant_lune2.jpg\" rel=\"lightbox[8523]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-8524\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/11\/croissant_lune2-450x280.jpg\" alt=\"\" width=\"450\" height=\"280\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/11\/croissant_lune2-450x280.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/11\/croissant_lune2-768x478.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/11\/croissant_lune2-1024x637.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/11\/croissant_lune2.jpg 1447w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Le clich\u00e9 ci-dessus a \u00e9t\u00e9 obtenu \u00e0 l&#8217;aide d&#8217;un bo\u00eetier Finepix HS20 dot\u00e9 d&#8217;un zoom utilis\u00e9 \u00e0 son amplitude maximale de 720 mm.<!--more--><\/p>\n<p>C&#8217;est toujours un agr\u00e9able d\u00e9fi de rep\u00e9rer le plus petit croissant qui suit (en soir\u00e9e) ou pr\u00e9c\u00e8de (\u00e0 l&#8217;aube) la Nouvelle Lune. Bien que celui de ce 19 novembre ne d\u00e9voile que 1,6% de notre satellite naturel, j&#8217;ai d\u00e9j\u00e0 fait beaucoup mieux le 19 f\u00e9vrier 2015 avec <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/02\/20\/un-minuscule-croissant-lunaire-age-de-18-heures\/\" target=\"_blank\" rel=\"noopener\">un minuscule croissant lunaire \u00e2g\u00e9 de 18 heures<\/a>, ce qui repr\u00e9sente 0,9% seulement de la surface de S\u00e9l\u00e9n\u00e9 !<\/p>\n<p>Si l&#8217;on dispose d&#8217;une monture permettant de pointer la Lune pendant qu&#8217;il fait jour dans un ciel tr\u00e8s pur, on peut faire beaucoup mieux. Le record absolu est d\u00e9tenu par l&#8217;astrophotographe fran\u00e7ais Thierry Legault qui est parvenu le 14 avril 2010 \u00e0 <a href=\"http:\/\/www.futura-sciences.com\/sciences\/actualites\/astronomie-premiere-fois-on-photographie-nouvelle-lune-23448\/\" target=\"_blank\" rel=\"noopener\">photographier pour la premi\u00e8re fois la Nouvelle Lune<\/a>.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" src=\"https:\/\/player.vimeo.com\/video\/134736291\" width=\"640\" height=\"480\" frameborder=\"0\" 0=\"webkitallowfullscreen\" 1=\"mozallowfullscreen\" 2=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>29 heures apr\u00e8s la Nouvelle Lune, voici le retour d&#8217;un jeune croissant d\u00e9form\u00e9 par l&#8217;atmosph\u00e8re dans la soir\u00e9e du 19 novembre. L&#8217;avant-derni\u00e8re lunaison de cette ann\u00e9e 2017 a d\u00e9but\u00e9 dans la soir\u00e9e du dimanche 19 novembre avec la br\u00e8ve apparition d&#8217;un jeune croissant sur l&#8217;horizon OUEST, une quarantaine de minutes apr\u00e8s le coucher du Soleil. &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/11\/19\/jeune-croissant-de-lune-age-de-29-heures\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Jeune croissant de Lune \u00e2g\u00e9 de 29 heures<\/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":8524,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[83],"tags":[483,82,161,1420,2179],"class_list":["post-8523","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-la-lune","tag-jeune-croissant","tag-lune","tag-nouvelle-lune","tag-petr-horalek","tag-thierry-legault"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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