{"id":2570,"date":"2026-02-15T17:48:43","date_gmt":"2026-02-15T16:48:43","guid":{"rendered":"https:\/\/vega78astronomie.fr\/?p=2570"},"modified":"2026-02-25T17:11:21","modified_gmt":"2026-02-25T16:11:21","slug":"le-globule-cometaire-cg4","status":"publish","type":"post","link":"https:\/\/vega78astronomie.fr\/index.php\/2026\/02\/15\/le-globule-cometaire-cg4\/","title":{"rendered":"Le globule com\u00e9taire CG4"},"content":{"rendered":"\n<p>Cette image remarquable, premi\u00e8re image en collaboration avec la team Vega-Sadr au Chili \u00e0 l\u2019observatoire SADR, a \u00e9t\u00e9 nomm\u00e9e <strong>\u00ab\u00a0top pick\u00a0\u00bb sur Astrobin<\/strong>. Bravo \u00e0 l&rsquo;\u00e9quipe !<\/p>\n\n\n\n<p>CG4 est un globule com\u00e9taire situ\u00e9 dans la constellation de la Poupe (Puppis), dans le ciel austral. Il s\u2019agit d\u2019un nuage dense de gaz et de poussi\u00e8res interstellaires, plong\u00e9 dans une vaste r\u00e9gion de formation stellaire.<\/p>\n\n\n\n<p>Visuellement, CG4 se distingue par sa forme allong\u00e9e : une \u00ab t\u00eate \u00bb compacte et opaque, suivie d\u2019une queue diffuse qui s\u2019\u00e9tire sur plusieurs ann\u00e9es-lumi\u00e8re. Cette morphologie est due au rayonnement intense et aux vents stellaires \u00e9mis par des \u00e9toiles massives voisines, qui \u00e9rodent progressivement le nuage et sculptent sa silhouette caract\u00e9ristique.<br><br>Tous les d\u00e9tails de prise de vue, r\u00e9alis\u00e9e avec une lunette de 140 mm en travail collaboratif sur 5 nuits pour un total de 36h30 de pose, sont disponibles <a href=\"https:\/\/app.astrobin.com\/i\/zzw7cm?r=0\">en cliquant sur ce lien<\/a>.<br><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"690\" src=\"https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/02\/CG4-VEGA-SADR-1024x690.jpg\" alt=\"\" class=\"wp-image-2576\" srcset=\"https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/02\/CG4-VEGA-SADR-1024x690.jpg 1024w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/02\/CG4-VEGA-SADR-300x202.jpg 300w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/02\/CG4-VEGA-SADR-768x517.jpg 768w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/02\/CG4-VEGA-SADR-100x67.jpg 100w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/02\/CG4-VEGA-SADR-1536x1034.jpg 1536w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/02\/CG4-VEGA-SADR-2048x1379.jpg 2048w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/02\/CG4-VEGA-SADR-200x135.jpg 200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Photo Emmanuel Valin, Jean-Paul Qu\u00e9au, Ga\u00ebtan Leroy, Hugues Talbot, Thibault Ploix de VEGA, et Cedric Humbert de SADR<\/em><\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Cette image remarquable, premi\u00e8re image en collaboration avec la team Vega-Sadr au Chili \u00e0 l\u2019observatoire SADR, a \u00e9t\u00e9 nomm\u00e9e \u00ab\u00a0top pick\u00a0\u00bb sur Astrobin. Bravo \u00e0 l&rsquo;\u00e9quipe ! CG4 est un globule com\u00e9taire situ\u00e9 dans la constellation de la Poupe (Puppis), dans le ciel austral. Il s\u2019agit d\u2019un nuage dense de gaz et de poussi\u00e8res interstellaires, [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19,29],"tags":[129],"class_list":["post-2570","post","type-post","status-publish","format-standard","hentry","category-ciel-profond","category-remote-chili","tag-cg4"],"_links":{"self":[{"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/posts\/2570","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/comments?post=2570"}],"version-history":[{"count":4,"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/posts\/2570\/revisions"}],"predecessor-version":[{"id":2582,"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/posts\/2570\/revisions\/2582"}],"wp:attachment":[{"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/media?parent=2570"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/categories?post=2570"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/tags?post=2570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}