{"id":952,"date":"2014-10-13T16:32:25","date_gmt":"2014-10-13T16:32:25","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=952"},"modified":"2014-10-28T08:37:25","modified_gmt":"2014-10-28T08:37:25","slug":"bien-debuter-en-astronomie","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/10\/13\/bien-debuter-en-astronomie\/","title":{"rendered":"Bien d\u00e9buter en astronomie"},"content":{"rendered":"

Le ciel vous attire, vous souhaitez partir \u00e0 sa d\u00e9couverte ? Voici quelques conseils pour vous guider.<\/p>\n

\"lunette\"<\/a><\/p>\n

Pour d\u00e9buter je vous invite \u00e0 commencer l’observation de la vo\u00fbte \u00e9toil\u00e9e \u00e0 l’oeil nu. Gr\u00e2ce \u00e0 une carte du ciel<\/a>, vous apprendrez \u00e0 vous orienter et \u00e0 reconna\u00eetre les principales constellations (comme la Grande Ourse<\/a> ou Cassiop\u00e9e<\/a>) et les \u00e9toiles les plus brillantes visibles tout au long de l’ann\u00e9e. Vous pourrez suivre les passages de l’ISS<\/a> et les essaims d’\u00e9toiles filantes comme les Pers\u00e9ides<\/a>.<\/p>\n

Vous remarquerez le lent d\u00e9placement de certains astres au fil des nuits, les plan\u00e8tes. Si vous poss\u00e9dez une paire de jumelles, pensez \u00e0 la pointer en direction de la Lune <\/a>: vous serez surpris de pouvoir admirer de nombreux crat\u00e8res (comme Tycho<\/a>) avec un instrument aussi simple.<\/p>\n

Pour entreprendre une exploration plus pouss\u00e9e de notre satellite naturel et faire de la s\u00e9l\u00e9nographie <\/a>il faudra faire l’acquisition d’une petite lunette de 60 \u00e0 80 mm de diam\u00e8tre. Ne soyez pas surpris par les diff\u00e9rences de prix : l’objectif d’une lunette peut \u00eatre compos\u00e9 d’une seule lentille en verre (image m\u00e9diocre) et jusqu’\u00e0 4 lentilles (images exceptionnelles). V\u00e9rifiez aussi la stabilit\u00e9 de la monture : tout grossissement amplifiant les vibrations, il est beaucoup plus confortable d’observer le ciel avec une monture stable.<\/p>\n

Outre la Lune, cette lunette vous permettra d’admirer les phases de V\u00e9nus<\/a>, les satellites de Jupiter <\/a>et les anneaux de Saturne<\/a>. Elle vous fera plonger dans les amas d’\u00e9toiles (comme celui des Pl\u00e9iades<\/a>) et approcher quelques galaxies (comme Messier 31<\/a>). Si le virus de l’astronomie vous prend, vous aurez alors envie d’acheter un t\u00e9lescope <\/a>plus gros. Je vous recommande \u00e0 ce moment de vous rendre dans une soir\u00e9e d’observation organis\u00e9e par un club : vous pourrez essayer de nombreux instruments et vous laisser guider dans votre choix par les astronomes amateurs pr\u00e9sents.<\/p>\n

Une derni\u00e8re recommandation : ne pointez jamais un instrument astronomique en direction du Soleil <\/a>s’il n’est pas muni d’un syst\u00e8me de filtration efficace, vous risqueriez de perdre la vue.<\/p>\n","protected":false},"excerpt":{"rendered":"

Le ciel vous attire, vous souhaitez partir \u00e0 sa d\u00e9couverte ? Voici quelques conseils pour vous guider. Pour d\u00e9buter je vous invite \u00e0 commencer l’observation de la vo\u00fbte \u00e9toil\u00e9e \u00e0 l’oeil nu. Gr\u00e2ce \u00e0 une carte du ciel, vous apprendrez \u00e0 vous orienter et \u00e0 reconna\u00eetre les principales constellations (comme la Grande Ourse ou Cassiop\u00e9e) … Continuer la lecture de Bien d\u00e9buter en astronomie<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":956,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[87],"tags":[94,450,130,89,296,112,196,90,82,148,331,451,172,114,92,136,390,97,96,386],"class_list":["post-952","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-hommes-et-le-ciel","tag-astronome","tag-carte-du-ciel","tag-ciel","tag-etoile","tag-etoile-filante","tag-galaxie","tag-iss","tag-jupiter","tag-lune","tag-lunette-astronomique","tag-messier-31","tag-paire-de-jumelles","tag-perseides","tag-planete","tag-pleiades","tag-saturne","tag-selenographie","tag-soleil","tag-telescope","tag-tycho"],"yoast_head":"\nBien d\u00e9buter en astronomie<\/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\/2014\/10\/13\/bien-debuter-en-astronomie\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bien d\u00e9buter en astronomie\" \/>\n<meta property=\"og:description\" content=\"Le ciel vous attire, vous souhaitez partir \u00e0 sa d\u00e9couverte ? Voici quelques conseils pour vous guider. Pour d\u00e9buter je vous invite \u00e0 commencer l’observation de la vo\u00fbte \u00e9toil\u00e9e \u00e0 l’oeil nu. Gr\u00e2ce \u00e0 une carte du ciel, vous apprendrez \u00e0 vous orienter et \u00e0 reconna\u00eetre les principales constellations (comme la Grande Ourse ou Cassiop\u00e9e) … Continuer la lecture de Bien d\u00e9buter en astronomie →\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/10\/13\/bien-debuter-en-astronomie\/\" \/>\n<meta property=\"og:site_name\" content=\"CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel\" \/>\n<meta property=\"article:published_time\" content=\"2014-10-13T16:32:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2014-10-28T08:37:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2014\/10\/lunette.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\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=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/10\/13\/bien-debuter-en-astronomie\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/10\/13\/bien-debuter-en-astronomie\/\",\"name\":\"Bien d\u00e9buter en astronomie\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/10\/13\/bien-debuter-en-astronomie\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/10\/13\/bien-debuter-en-astronomie\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2014\/10\/lunette.jpg\",\"datePublished\":\"2014-10-13T16:32:25+00:00\",\"dateModified\":\"2014-10-28T08:37:25+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\/2014\/10\/13\/bien-debuter-en-astronomie\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/10\/13\/bien-debuter-en-astronomie\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2014\/10\/lunette.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2014\/10\/lunette.jpg\",\"width\":1200,\"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\":\""J'ai en moi un besoin terrible. 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