{"id":9273,"date":"2012-03-17T23:22:24","date_gmt":"2012-03-17T23:22:24","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/entre-rigel-et-betelgeuse-la-boucle-de-barnard\/"},"modified":"2025-06-08T22:47:08","modified_gmt":"2025-06-08T20:47:08","slug":"entre-rigel-et-betelgeuse-la-boucle-de-barnard","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/entre-rigel-et-betelgeuse-la-boucle-de-barnard\/","title":{"rendered":"Entre Rigel et Betelgeuse: la boucle de Barnard"},"content":{"rendered":"

Cette photo est un vieux r\u00eave et j’ai achet\u00e9 un ojectif sp\u00e9cialement pour le r\u00e9aliser: un simple canon 50mm de base, tout fait de plastique.<\/p>\n

Ici, en 25 x 240s.
\n\"\"<\/a><\/p>\n

La pollution lumineuse est vraiment une infortune en nos r\u00e9gions. Il faut capturer au plus haut et ensuite g\u00e9rer les gradients.
\nIci, le m\u00eame objet captur\u00e9 \u00e0 l’aide d’un filtre Ha 12nm sur le reste de la nuit. M\u00eame avec un tel outil, la pollution lumineuse et les gradients se rappellent \u00e0 nous.
\nIci, en 15x240s
\n\"\"<\/a><\/p>\n

Pour \u00e9viter le tourni, voici les images redress\u00e9es.
\n\"\"<\/a>
\n\"\"<\/a><\/p>\n

Les images sont montr\u00e9es \u00e0 30% de leur r\u00e9solution nominale.<\/p>\n

2012Fev12 Belgium
\nBarnard’s Loop (Sharpless 276: Sh2-276)
\nE-Nebula
\nSize [ArcMin] 1200<\/p>\n

AstroTrac
\nCanon\/EF-50mm-1.8 II @f3.5
\nCanon\/EOS40Da
\nFOV – X [ArcMin] 1514
\nFOV – Y [ArcMin] 1010
\nGuider NA
\nISO 800 <\/p>\n

Color Pic
\n25x240s
\nIDAS LPS P1 <\/p>\n

B\/W Pic
\n15×240
\nAstronomik Ha 12nm EOS Clip <\/p>\n

Dark; no flat<\/p>\n

Alexandre<\/p>\n\n\n

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

Cette photo est un vieux r\u00eave et j’ai achet\u00e9 un ojectif sp\u00e9cialement pour le r\u00e9aliser: un simple canon 50mm de base, tout fait de plastique. Ici, en 25 x 240s. La pollution lumineuse est vraiment une infortune en nos r\u00e9gions. Il faut capturer au plus haut et ensuite g\u00e9rer les gradients. Ici, le m\u00eame objet […]<\/p>\n","protected":false},"author":16,"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-9273","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9273","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\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=9273"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9273\/revisions"}],"predecessor-version":[{"id":12415,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9273\/revisions\/12415"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9273"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9273"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}