{"id":17470,"date":"2023-02-08T13:11:24","date_gmt":"2023-02-08T13:11:24","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=17470"},"modified":"2023-02-18T16:02:26","modified_gmt":"2023-02-18T16:02:26","slug":"taches-solaires-visibles-au-lever-du-soleil","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2023\/02\/08\/taches-solaires-visibles-au-lever-du-soleil\/","title":{"rendered":"Taches solaires visibles au lever du Soleil"},"content":{"rendered":"<p><strong>Le Soleil montre actuellement de belles taches que j&#8217;ai pu photographier ce matin sans filtre juste apr\u00e8s son lever.<\/strong><\/p>\n<h5>Un nouveau cycle riche en taches :<\/h5>\n<p>Les taches sont des zones sombres moins chaudes qui trahissent une intense activit\u00e9 magn\u00e9tique \u00e0 la surface du Soleil. Elles sont num\u00e9rot\u00e9es dans l\u2019ordre d\u2019apparition, le num\u00e9ro \u00e9tant pr\u00e9c\u00e9d\u00e9 par les lettres AR qui signifient <em>Active Region<\/em>. Depuis d\u00e9cembre 2019, date \u00e0 laquelle on a assist\u00e9 au changement de polarit\u00e9 du <a href=\"https:\/\/www.futura-sciences.com\/sciences\/breves\/soleil-explosions-magnetiques-inconnues-surface-soleil-1700\/\" target=\"_blank\" rel=\"noopener noreferrer\">magn\u00e9tisme du Soleil<\/a>, nous sommes dans un nouveau cycle solaire, le vingt-cinqui\u00e8me. L\u2019activit\u00e9 de ce nouveau cycle se r\u00e9v\u00e8le beaucoup plus \u00e9lev\u00e9e que ce que les simulations pr\u00e9voyaient. Ce matin 8 f\u00e9vrier, j&#8217;ai pu photographier quelques-unes des taches visibles actuellement :<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/02\/soleil_08fevrier.jpg\" rel=\"lightbox[17470]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-17471\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/02\/soleil_08fevrier-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/02\/soleil_08fevrier-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/02\/soleil_08fevrier-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/02\/soleil_08fevrier-768x460.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/02\/soleil_08fevrier.jpg 1501w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>J&#8217;ai profit\u00e9 d&#8217;une \u00e9paisse couche de brouillard \u00e0 l&#8217;horizon pour r\u00e9aliser une image sans filtre avec mon bo\u00eetier Panasonic FZ82. Une pose de 1\/2.000e de seconde et le zoom au maximum (1.200 millim\u00e8tres) ont \u00e9t\u00e9 suffisants pour visualiser les taches du jour.<!--more--><\/p>\n<h5>\u00c0 savoir :<\/h5>\n<ul>\n<li>Sans brouillard pour att\u00e9nuer fortement la luminosit\u00e9 du Soleil, son observation n\u00e9cessite imp\u00e9rativement l\u2019adjonction d\u2019un filtre. La soci\u00e9t\u00e9 Stelvision vous propose par exemple deux mod\u00e8les (<a href=\"https:\/\/www.stelvision.com\/astro\/boutique\/filtre-solaire-astf80-pour-lunette-astronomique-stelescope-70-ou-equivalent\/\" target=\"_blank\" rel=\"noopener\">ASTF 80<\/a>\u00a0ou\u00a0<a href=\"https:\/\/www.stelvision.com\/astro\/boutique\/filtre-solaire-astf140-pour-telescope-stelescope-130-ou-equivalent\/\" target=\"_blank\" rel=\"noopener\">ASTF 140<\/a>) adaptables sur un <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2023\/01\/11\/peut-on-choisir-son-premier-telescope-sans-se-tromper\/\" target=\"_blank\" rel=\"noopener\">t\u00e9lescope<\/a>, qui ne laissent passer que 1\/100.000e du rayonnement solaire.<\/li>\n<li>Sans filtre, on peut quand m\u00eame suivre sans danger l\u2019activit\u00e9 ne notre \u00e9toile. Pour cela, il suffit de se rendre sur la page du satellite solaire\u00a0<a href=\"http:\/\/sohowww.nascom.nasa.gov\/sunspots\/\" target=\"_blank\" rel=\"noopener noreferrer\">SOHO\u00a0<\/a>(<em>SOlar and Heliospheric Observatory<\/em>).<\/li>\n<li>C\u2019est\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/01\/06\/galilee-le-savant-qui-a-ouvert-nos-yeux-sur-lunivers\/\" target=\"_blank\" rel=\"noopener noreferrer\">Galil\u00e9e<\/a>\u00a0qui le premier observa des taches solaires avec une\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/05\/bien-choisir-sa-premiere-lunette-astronomique\/\" target=\"_blank\" rel=\"noopener noreferrer\">lunette astronomique<\/a> en 1612. Heinrich Schwabe remarqua la p\u00e9riodicit\u00e9 de ces taches en 1848. Puis l\u2019astronome Rudolph Wolf d\u00e9termina la dur\u00e9e moyenne d\u2019un cycle solaire : environ 11 ans.<\/li>\n<\/ul>\n<h5>Vous pourriez aimer :<\/h5>\n<ul>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/09\/26\/uy-scuti-la-supergeante-1-700-fois-plus-grande-que-le-soleil\/\" target=\"_blank\" rel=\"noopener\">UY Scuti, la superg\u00e9ante 1.700 fois plus grande que le Soleil<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/08\/23\/video-famille-francaise-soleil-noir\/\" target=\"_blank\" rel=\"noopener\">En vid\u00e9o : une famille fran\u00e7aise sous le Soleil noir<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/11\/25\/une-eclipse-solaire-vue-de-lespace\/\" target=\"_blank\" rel=\"noopener\">Une \u00e9clipse solaire vue de l\u2019espace<\/a><\/li>\n<\/ul>\n<p>Suivez l\u2019actualit\u00e9 astronomique et d\u00e9couvrez mes images du ciel en vous abonnant \u00e0 Cielmania sur\u00a0<a href=\"https:\/\/www.facebook.com\/cielmania\/\" target=\"_blank\" rel=\"noopener noreferrer\">Facebook<\/a>.<\/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 Soleil montre actuellement de belles taches que j&#8217;ai pu photographier ce matin sans filtre juste apr\u00e8s son lever. Un nouveau cycle riche en taches : Les taches sont des zones sombres moins chaudes qui trahissent une intense activit\u00e9 magn\u00e9tique \u00e0 la surface du Soleil. Elles sont num\u00e9rot\u00e9es dans l\u2019ordre d\u2019apparition, le num\u00e9ro \u00e9tant pr\u00e9c\u00e9d\u00e9 &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2023\/02\/08\/taches-solaires-visibles-au-lever-du-soleil\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Taches solaires visibles au lever du Soleil<\/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":17471,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[2623,97,3107],"class_list":["post-17470","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-panasonic-dc-fz82","tag-soleil","tag-taches-solaires"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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