{"id":10315,"date":"2022-04-03T14:50:25","date_gmt":"2022-04-03T14:50:25","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/galaxie-du-tourbillon\/"},"modified":"2025-06-08T22:44:24","modified_gmt":"2025-06-08T20:44:24","slug":"galaxie-du-tourbillon","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/galaxie-du-tourbillon\/","title":{"rendered":"Galaxie du Tourbillon"},"content":{"rendered":"

Galaxie du Tourbillon – M 51<\/p>\n

Voici ma version de ce classique, mais toujours un objet spectaculaire \u00e0 visionner.
\nC’est une galaxie spirale situ\u00e9e dans la constellation des Chiens de chasse \u00e0 environ 27 millions d’ann\u00e9es-lumi\u00e8re de la Voie lact\u00e9e.
\nEn compagnie de NGC 5195, quelquefois d\u00e9sign\u00e9 comme M51B, M51 forme un couple de galaxies en interaction.
\nSelon une \u00e9tude publi\u00e9e en 2009 et bas\u00e9e sur la vitesse interne de la galaxie mesur\u00e9e par le t\u00e9lescope spatial Hubble, la masse du trou noir supermassif au centre de M51 serait comprise entre 430 mille et 2,3 millions de masse solaire.
\nImages prises pendant la bonne p\u00e9riode m\u00e9t\u00e9o de fin mars dernier, toujours sous ciel plut\u00f4t Bortle 7.
\nPoses de 180 sec<\/p>\n

60 x L – 26 x R – 25 x G – 25 x B – 10 x Ha – soit un total de 7h 18 min.
\nFocale 1200 mm – F 4.7 – Bin 1×1 – Chaque pixel couvre 0.65″ d’arc.
\nImage que j’ai quelque peu rogn\u00e9e:<\/p>\n

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

Ci-dessous une image annot\u00e9e avec un champ plus large:<\/p>\n

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

Richard Hendrick<\/p>\n\n\n

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

Galaxie du Tourbillon – M 51 Voici ma version de ce classique, mais toujours un objet spectaculaire \u00e0 visionner. C’est une galaxie spirale situ\u00e9e dans la constellation des Chiens de chasse \u00e0 environ 27 millions d’ann\u00e9es-lumi\u00e8re de la Voie lact\u00e9e. En compagnie de NGC 5195, quelquefois d\u00e9sign\u00e9 comme M51B, M51 forme un couple de galaxies […]<\/p>\n","protected":false},"author":11,"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-10315","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10315","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\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=10315"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10315\/revisions"}],"predecessor-version":[{"id":11373,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10315\/revisions\/11373"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=10315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=10315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=10315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}