{"id":9476,"date":"2013-08-06T20:28:13","date_gmt":"2013-08-06T20:28:13","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/america\/"},"modified":"2025-06-08T22:46:35","modified_gmt":"2025-06-08T20:46:35","slug":"america","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/america\/","title":{"rendered":"America"},"content":{"rendered":"

Bonjour,
\nj’ai encore pu profiter des larges \u00e9claircies de la nuit de ce samedi 3 ao\u00fbt pour imager la belle et c\u00e9l\u00e8bre n\u00e9buleuse NGC7000 alias America Nebula. Les conditions \u00e9taient toutefois moins favorables que pour la s\u00e9ance consacr\u00e9e aux n\u00e9buleuses de Gamma Cygni en ce sens qu’il y avait r\u00e9guli\u00e8rement des passages de cirrus. Ces cirrus \u00e9taient parfois tellement fins qu’on ne les voyaient pas \u00e0 l’oeil nu, mais la mont\u00e9e de l’histogramme de luminosit\u00e9 des images qui se succ\u00e9daient \u00e0 l’\u00e9cran trahissait leur pr\u00e9sence. <\/p>\n

Donc, Am\u00e9rica captur\u00e9e depuis l’observatoire de La Fosse avec l’apn Canon 350D Baader sur la lunette Televue NP101IS avec r\u00e9ducteur 0,8x sur la monture NJP, le 03\/08\/2013. Compositage de 47 images RAW captur\u00e9es \u00e0 400 ISO en mode charentaise (cad sans autoguidage). Le traitement a \u00e9t\u00e9 moins facile que sur les n\u00e9bulosit\u00e9s de gamma, preuve que la qualit\u00e9 du ciel joue un grand r\u00f4le en astrophoto. R\u00e9sultat pr\u00e9sent\u00e9 \u00e0 50pc de la taille d’acquisition pour le forum.<\/p>\n

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

J-luc<\/p>\n\n\n

\n \n
\n \n
\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n <\/div>\n \n
\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n <\/div>\n<\/div>\n \n\n
\n 10\/10 - (1 vote) <\/div>\n <\/div>\n","protected":false},"excerpt":{"rendered":"

Bonjour, j’ai encore pu profiter des larges \u00e9claircies de la nuit de ce samedi 3 ao\u00fbt pour imager la belle et c\u00e9l\u00e8bre n\u00e9buleuse NGC7000 alias America Nebula. Les conditions \u00e9taient toutefois moins favorables que pour la s\u00e9ance consacr\u00e9e aux n\u00e9buleuses de Gamma Cygni en ce sens qu’il y avait r\u00e9guli\u00e8rement des passages de cirrus. Ces […]<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[2],"tags":[],"class_list":["post-9476","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9476","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=9476"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9476\/revisions"}],"predecessor-version":[{"id":12202,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9476\/revisions\/12202"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}