{"id":20690,"date":"2024-12-20T07:56:46","date_gmt":"2024-12-20T06:56:46","guid":{"rendered":"http:\/\/www.on4cn.be\/blog_radio\/?p=20690"},"modified":"2024-12-20T08:07:08","modified_gmt":"2024-12-20T07:07:08","slug":"le-radiotelescope-dwingeloo-recoit-des-signaux-de-voyager-1","status":"publish","type":"post","link":"http:\/\/www.on4cn.be\/blog_radio\/2024\/12\/20\/le-radiotelescope-dwingeloo-recoit-des-signaux-de-voyager-1\/","title":{"rendered":"Le radiot\u00e9lescope Dwingeloo re\u00e7oit des signaux de Voyager 1"},"content":{"rendered":"<article class=\"article\">\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/encrypted-tbn0.gstatic.com\/images?q=tbn:ANd9GcTTRF44Ae44cCa_D0nmagQoB445CqaWrQa8BoDMLqQdlwJVMJ4DB_jyCqNEK7cpAARQfmQ&#038;usqp=CAU\" width=\"300\" height=\"100\" \/><br \/>\n<center><strong><span style=\"color: #ff0000;\">Le radiot\u00e9lescope Dwingeloo re\u00e7oit des signaux de Voyager 1<\/span><\/strong><\/center><\/p>\n<p><a href=\"https:\/\/www.darc.de\/fileadmin\/filemounts\/gs\/redaktion\/DARC-Portal\/2024\/2412\/Dwingeloo-Radioteleskop.JPG\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.darc.de\/fileadmin\/filemounts\/gs\/redaktion\/DARC-Portal\/2024\/2412\/Dwingeloo-Radioteleskop.JPG\" width=\"330\" height=\"160\" \/><\/a>&nbsp;&nbsp;<br \/>\nLe radiot\u00e9lescope n\u00e9erlandais de Dwingeloo, utilis\u00e9 par des radioamateurs pour diff\u00e9rents projets, a capt\u00e9 des signaux de la sonde spatiale Voyager 1. Ces signaux sont tr\u00e8s faibles en raison de la distance de Voyager 1 : presque 25 milliards de kilom\u00e8tres, soit plus de quatre fois la distance jusqu&rsquo;\u00e0 Pluton.<\/p>\n<p>Voyager 1 a \u00e9t\u00e9 lanc\u00e9e en 1977 pour visiter les plan\u00e8tes ext\u00e9rieures du syst\u00e8me solaire. Apr\u00e8s la fin de sa mission principale, elle a \u00e9t\u00e9 envoy\u00e9e en voyage hors du syst\u00e8me solaire. Elle est actuellement l&rsquo;objet fabriqu\u00e9 par l&rsquo;homme le plus \u00e9loign\u00e9 et le plus rapide, se d\u00e9pla\u00e7ant dans l&rsquo;espace interstellaire. Les signaux radio de la sonde mettent actuellement 23 heures pour atteindre la Terre.<\/p>\n<p>Le t\u00e9lescope de Dwingeloo a \u00e9t\u00e9 construit en 1956 par l&rsquo;ASTRON, l&rsquo;Institut n\u00e9erlandais de radioastronomie. Aujourd&rsquo;hui, le t\u00e9lescope est un monument national et est utilis\u00e9 par des amateurs organis\u00e9s au sein de la fondation CAMRAS.<\/p>\n<p>Comme le t\u00e9lescope de Dwingeloo \u00e9tait con\u00e7u pour l&rsquo;observation \u00e0 des fr\u00e9quences plus basses que la t\u00e9l\u00e9m\u00e9trie de 8,4 GHz envoy\u00e9e par Voyager 1, une nouvelle antenne a d\u00fb \u00eatre install\u00e9e. \u00c0 ces fr\u00e9quences plus \u00e9lev\u00e9es, le r\u00e9seau de l&rsquo;antenne est moins r\u00e9fl\u00e9chissant, rendant la r\u00e9ception des signaux faibles particuli\u00e8rement difficile.<\/p>\n<p>Pour localiser le tr\u00e8s faible signal porteur dans le bruit, l&rsquo;\u00e9quipe de CAMRAS a utilis\u00e9 les pr\u00e9visions de trajectoire de Voyager 1 afin de corriger le d\u00e9calage Doppler de la fr\u00e9quence caus\u00e9 par les mouvements de la Terre et de Voyager 1. De cette fa\u00e7on, le signal a pu \u00eatre observ\u00e9 en temps r\u00e9el dans la salle d&rsquo;observation du t\u00e9lescope.<\/p>\n<p>Info de la Source  <a href=\"https:\/\/www.darc.de\/home\/\" target=\"_blank\" rel=\"noopener noreferrer\"><b><span style=\"color: #ff0000;\"> * ICI<\/span><\/b><\/a><\/p>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>Le radiot\u00e9lescope Dwingeloo re\u00e7oit des signaux de Voyager 1 &nbsp;&nbsp; Le radiot\u00e9lescope n\u00e9erlandais de Dwingeloo, utilis\u00e9 par des radioamateurs pour diff\u00e9rents projets, a capt\u00e9 des signaux de la sonde spatiale Voyager 1. Ces signaux sont tr\u00e8s faibles en raison de la distance de Voyager 1 : presque 25 milliards de kilom\u00e8tres, soit plus de quatre &hellip; <a href=\"http:\/\/www.on4cn.be\/blog_radio\/2024\/12\/20\/le-radiotelescope-dwingeloo-recoit-des-signaux-de-voyager-1\/\" class=\"more-link\">Continuer la lecture<span class=\"screen-reader-text\"> de &laquo;&nbsp;Le radiot\u00e9lescope Dwingeloo re\u00e7oit des signaux de Voyager 1&nbsp;&raquo;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35,24,25],"tags":[],"class_list":["post-20690","post","type-post","status-publish","format-standard","hentry","category-info","category-trafic-radio","category-trafic-radioamatuer"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"Le radiot\u00e9lescope Dwingeloo re\u00e7oit des signaux de Voyager 1 Le radiot\u00e9lescope n\u00e9erlandais de Dwingeloo, utilis\u00e9 par des radioamateurs pour diff\u00e9rents projets, a capt\u00e9 des signaux de la sonde spatiale Voyager 1. 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