{"id":10328,"date":"2022-05-23T00:41:47","date_gmt":"2022-05-23T00:41:47","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/hibou-du-soir\/"},"modified":"2025-06-08T22:44:22","modified_gmt":"2025-06-08T20:44:22","slug":"hibou-du-soir","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/hibou-du-soir\/","title":{"rendered":"Hibou du soir"},"content":{"rendered":"

La n\u00e9buleuse du Hibou situ\u00e9e dans la constellation de la Grande Ourse est une n\u00e9buleuse plan\u00e9taire. Elle n’a rien \u00e0 voir avec une plan\u00e8te mais on peut comprendre que sa forme rappelle une plan\u00e8te pour les premiers observateurs qui la d\u00e9couvrirent en 1781.
\nElle porte le num\u00e9ro 97 du catalogue de l’astronome fran\u00e7ais Messier.
\nCet objet marque la fin de vie d’une \u00e9toile comme notre Soleil.
\nOn remarque la pr\u00e9sence d’hydrog\u00e8ne dans les couches ext\u00e9rieures (en rouge) tandis que l’oxyg\u00e8ne se concentre vers le centre (en bleu\/vert).
\nLa vitesse d’expansion de la n\u00e9buleuse est de l’ordre de 30 km\/s.
\nLa temp\u00e9rature de l’\u00e9toile naine blanche au centre avoisine les 100.000 \u00b0C (5.500 \u00b0C pour notre \u00e9toile).<\/p>\n

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

75 poses de 60 secondes avec un t\u00e9lescope de 280mm de diam\u00e8tre et 1760mm de focale.<\/p>\n\n\n

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\n Veuillez voter<\/span>\n <\/div>\n <\/div>\n","protected":false},"excerpt":{"rendered":"

La n\u00e9buleuse du Hibou situ\u00e9e dans la constellation de la Grande Ourse est une n\u00e9buleuse plan\u00e9taire. Elle n’a rien \u00e0 voir avec une plan\u00e8te mais on peut comprendre que sa forme rappelle une plan\u00e8te pour les premiers observateurs qui la d\u00e9couvrirent en 1781. Elle porte le num\u00e9ro 97 du catalogue de l’astronome fran\u00e7ais Messier. Cet […]<\/p>\n","protected":false},"author":1,"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-10328","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10328","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=10328"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10328\/revisions"}],"predecessor-version":[{"id":11358,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10328\/revisions\/11358"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=10328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=10328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=10328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}