{"id":17359,"date":"2026-09-17T20:23:24","date_gmt":"2026-09-17T18:23:24","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/?p=17359"},"modified":"2026-09-17T20:32:19","modified_gmt":"2026-09-17T18:32:19","slug":"nebuleuse-helix","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/nebuleuse-helix\/","title":{"rendered":"N\u00e9buleuse Helix"},"content":{"rendered":"
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Dans la constellation du Verseau, tapie dans l’ombre, \u00ab\u00a0l’oeil de dieu\u00a0\u00bb vous contemple \"\ud83d\ude09\"<\/span><\/div>\n
Voici une n\u00e9buleuse plan\u00e9taire appel\u00e9e \u00ab\u00a0Helix\u00a0\u00bb, NGC 7293 et (parfois) \u00ab\u00a0l’oeil de dieu\u00a0\u00bb.<\/div>\n
A une distance d’environ 650 ann\u00e9es-lumi\u00e8re de nous, elle est finalement tr\u00e8s proche; c’est m\u00eame une des plus proches n\u00e9buleuses plan\u00e9taires.<\/div>\n
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Cependant, elle n’a rien \u00e0 voir avec une plan\u00e8te. Cet objet signe la mort d’une \u00e9toile dont la masse \u00e9quivaut \u00e0 peu pr\u00e8s \u00e0 celle de notre Soleil.<\/p>\n

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

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Conditions d’acquisition:<\/div>\n
Attendre minuit pour l’extinction de l’\u00e9clairage public.<\/div>\n
Comme cette cible est fort basse sur l’horizon sud, j’ai seulement pu faire 30 poses de 111s avant qu’elle ne soit occult\u00e9e par la chemin\u00e9e du voisin \"\ud83d\ude09\"<\/span><\/div>\n
T\u00e9lescope de 280mm de diam\u00e8tre (C11) avec un r\u00e9ducteur de focale F\/D:6.3<\/div>\n
Cam\u00e9ra zwo asi 1600 mc pro refroidie \u00e0 -10\u00b0C pour r\u00e9duire un peu le bruit thermique.
\nPS: l’image est fortement cropp\u00e9e \u00e0 cause d’un vignettage important et des probl\u00e8mes de tilt. On va essayer d’y rem\u00e9dier. Merci \u00e0 Pierre pour ses conseils \u00e9clair\u00e9s !<\/em><\/div>\n<\/div>\n\n\n
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\n 9.7\/10 - (3 votes) <\/div>\n <\/div>\n","protected":false},"excerpt":{"rendered":"

Dans la constellation du Verseau, tapie dans l’ombre, \u00ab\u00a0l’oeil de dieu\u00a0\u00bb vous contemple Voici une n\u00e9buleuse plan\u00e9taire appel\u00e9e \u00ab\u00a0Helix\u00a0\u00bb, NGC 7293 et (parfois) \u00ab\u00a0l’oeil de dieu\u00a0\u00bb. A une distance d’environ 650 ann\u00e9es-lumi\u00e8re de nous, elle est finalement tr\u00e8s proche; c’est m\u00eame une des plus proches n\u00e9buleuses plan\u00e9taires. Cependant, elle n’a rien \u00e0 voir avec une […]<\/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-17359","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/17359","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=17359"}],"version-history":[{"count":2,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/17359\/revisions"}],"predecessor-version":[{"id":17362,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/17359\/revisions\/17362"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=17359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=17359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=17359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}