{"id":9649,"date":"2014-11-16T10:43:04","date_gmt":"2014-11-16T10:43:04","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/une-petite-dumbell-darriere-saison\/"},"modified":"2025-06-23T12:20:16","modified_gmt":"2025-06-23T10:20:16","slug":"une-petite-dumbell-darriere-saison","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/une-petite-dumbell-darriere-saison\/","title":{"rendered":"Une petite Dumbbell d’arri\u00e8re saison"},"content":{"rendered":"

Bonjour,
\nje vous pr\u00e9sente une vue d’un grand classique du ciel, la n\u00e9buleuse M27 alias \u00ab\u00a0le trognon de pomme\u00a0\u00bb ou \u00ab\u00a0le battant de cloche\u00a0\u00bb.
\nCette image a \u00e9t\u00e9 captur\u00e9e depuis La Fosse le samedi 18\/10\/14 pour les couches rouge (16×2 minutes) et verte (12×2 minutes) et le 01\/11\/14 pour les couches bleue (15×2 minutes) et H\u03b1 (12×5 minutes), soit un temps de pose total \u00e9quivalent de 2 heures et 26 minutes; le tout en binning 2×2 avec le CG11 \u00e0 F\/D 6,3 sur la monture NJP. Cam\u00e9ra ST10 XME en binning 2×2. Soustraction du dark suivie de la division par le flat sous CCDSoft; registration puis compositage sigma clipping IRIS. Assemblage des couches RVB puis r\u00e9glages courbes et niveaux sous Photoshop, assemblage H\u03b1rvb puis r\u00e9glages finaux sous PSP7.<\/p>\n

L’\u00e9toile centrale de magnitude 13,5 est bien visible au centre de la n\u00e9buleuse. De couleur bleut\u00e9e, elle est extr\u00eamement chaude puisque sa temp\u00e9rature atteint 85000 Kelvin. Il s’agit d’une naine blanche, sorte de cadavre stellaire r\u00e9sidu de l’\u00e9toile qui a perdu ses couches ext\u00e9rieures.<\/p>\n

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

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

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

Bonjour, je vous pr\u00e9sente une vue d’un grand classique du ciel, la n\u00e9buleuse M27 alias \u00ab\u00a0le trognon de pomme\u00a0\u00bb ou \u00ab\u00a0le battant de cloche\u00a0\u00bb. Cette image a \u00e9t\u00e9 captur\u00e9e depuis La Fosse le samedi 18\/10\/14 pour les couches rouge (16×2 minutes) et verte (12×2 minutes) et le 01\/11\/14 pour les couches bleue (15×2 minutes) et […]<\/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-9649","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9649","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=9649"}],"version-history":[{"count":2,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9649\/revisions"}],"predecessor-version":[{"id":15484,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9649\/revisions\/15484"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}