{"id":3353,"date":"2015-08-07T07:52:22","date_gmt":"2015-08-07T07:52:22","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=3353"},"modified":"2016-10-28T11:59:18","modified_gmt":"2016-10-28T11:59:18","slug":"rotation-detoiles-dans-le-ciel-de-la-bresse","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/08\/07\/rotation-detoiles-dans-le-ciel-de-la-bresse\/","title":{"rendered":"Rotation d&#8217;\u00e9toiles dans le ciel de la Bresse"},"content":{"rendered":"<p><strong>Un s\u00e9jour loin de toute pollution lumineuse permet de s&#8217;adonner aux joies de l&#8217;astrophotographie. Exemple avec une rotation d&#8217;\u00e9toiles r\u00e9alis\u00e9e en Bresse.\u00a0<\/strong><\/p>\n<p>Avec une superficie de pr\u00e8s de 4 000 km2, la Bresse est une r\u00e9gion fran\u00e7aise essentiellement rurale qui se loge entre le <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/03\/07\/la-pleine-lune-du-corbeau-se-leve-sur-le-doubs\/\" target=\"_blank\">Doubs <\/a>au nord, le Jura \u00e0 l&#8217;est, la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/06\/21\/la-lune-jupiter-et-venus-au-dessus-du-pont-de-bourgogne\/\" target=\"_blank\">Sa\u00f4ne <\/a>\u00e0 l&#8217;ouest et les Dombes au sud. L&#8217;absence de grosse agglom\u00e9ration pr\u00e9serve le ciel bressan de la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/06\/28\/pollution-lumineuse\/\" target=\"_blank\">pollution lumineuse<\/a> que l&#8217;on trouve sur une grande partie du territoire et offre des possibilit\u00e9s int\u00e9ressantes pour les <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/12\/14\/lumiere-rouge-les-astronomes\/\" target=\"_blank\">astronomes <\/a>amateurs et les astrophotographes.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/08\/rotation2.jpg\" rel=\"lightbox[3353]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-3355\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/08\/rotation2-450x299.jpg\" alt=\"rotation2\" width=\"450\" height=\"299\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/08\/rotation2-450x299.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/08\/rotation2-1024x681.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/08\/rotation2.jpg 1354w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Quelques jours pass\u00e9s du c\u00f4t\u00e9 de la Chapelle-Saint-Sauveur m&#8217;ont permis de r\u00e9aliser des images de rotations d&#8217;\u00e9toiles (c&#8217;est en r\u00e9alit\u00e9 la rotation de la Terre qui nous donne l&#8217;impression que les astres se d\u00e9placent d&#8217;est en ouest dans le ciel).<\/p>\n<p><!--more-->Chaque clich\u00e9 est le r\u00e9sultat final d&#8217;un assemblage de plusieurs dizaines d&#8217;images \u00e0 l&#8217;aide de\u00a0<a href=\"http:\/\/ggrillot.free.fr\/astro\/starmax.html\" target=\"_blank\">Starmax<\/a>,\u00a0un logiciel gratuit cr\u00e9\u00e9 par Gilbert Grillot et Sylvain Weiller qui permet d&#8217;additionner des photos d&#8217;\u00e9toiles.<\/p>\n<p>L&#8217;image ci-dessus repr\u00e9sente 1 h 30 de poses cumul\u00e9es (180 images de 30 sec) en pointant un bo\u00eetier photo en direction de l&#8217;<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/03\/31\/astuce-comment-reperer-la-celebre-etoile-polaire\/\" target=\"_blank\">\u00e9toile polaire<\/a> (en haut de l&#8217;image). L&#8217;objectif utilis\u00e9 \u00e9tait un 18 mm ouvert \u00e0 3,5 et la sensibilit\u00e9 \u00e9tait de 800 iso.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" src=\"https:\/\/player.vimeo.com\/video\/189298626\" width=\"640\" height=\"360\" frameborder=\"0\" 0=\"webkitallowfullscreen\" 1=\"mozallowfullscreen\" 2=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p>&nbsp;<\/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>Un s\u00e9jour loin de toute pollution lumineuse permet de s&#8217;adonner aux joies de l&#8217;astrophotographie. Exemple avec une rotation d&#8217;\u00e9toiles r\u00e9alis\u00e9e en Bresse.\u00a0 Avec une superficie de pr\u00e8s de 4 000 km2, la Bresse est une r\u00e9gion fran\u00e7aise essentiellement rurale qui se loge entre le Doubs au nord, le Jura \u00e0 l&#8217;est, la Sa\u00f4ne \u00e0 l&#8217;ouest &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/08\/07\/rotation-detoiles-dans-le-ciel-de-la-bresse\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Rotation d&#8217;\u00e9toiles dans le ciel de la Bresse<\/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":3355,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[84],"tags":[1198,98,196,1199,1197,963],"class_list":["post-3353","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciel-etoile","tag-bresse","tag-etoile-polaire","tag-iss","tag-la-chapelle-saint-sauveur","tag-rotation-detoiles","tag-starmax"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Rotation d&#039;\u00e9toiles dans le ciel de la Bresse<\/title>\n<meta name=\"description\" content=\"Un s\u00e9jour loin de toute pollution lumineuse permet de s&#039;adonner aux joies de l&#039;astrophotographie. 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