{"id":2681,"date":"2026-10-05T18:09:07","date_gmt":"2026-10-05T16:09:07","guid":{"rendered":"https:\/\/vega78astronomie.fr\/?p=2681"},"modified":"2026-10-05T18:09:07","modified_gmt":"2026-10-05T16:09:07","slug":"sh2-112-sh2-115-et-sh2-116","status":"publish","type":"post","link":"https:\/\/vega78astronomie.fr\/index.php\/2026\/10\/05\/sh2-112-sh2-115-et-sh2-116\/","title":{"rendered":"SH2-112, Sh2-115 et Sh2-116"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Voici un tr\u00e8s beau trio de n\u00e9buleuses en \u00e9mission situ\u00e9es pr\u00e8s de Deneb dans la constellation du Cygne. Cette r\u00e9gion du ciel, entre 7000 et 13000 ann\u00e9es-lumi\u00e8re de la Terre, comporte de nombreuses nu\u00e9es d&rsquo;hydrog\u00e8ne ionis\u00e9 par le rayonnement UV intense d&rsquo;\u00e9toiles massives et jeunes. D&rsquo;o\u00f9 la dominante rouge de l&rsquo;image, pr\u00e9sent\u00e9e ici en deux versions de traitement : un traitement classique via le catalogue photom\u00e9trique de GAIA, et un traitement HOO pour faire ressortir l&rsquo;oxyg\u00e8ne III de Sh2-115 au centre gauche, Sh2-112 \u00e0 droite, et Sh2-116 plus haut \u00e0 gauche. Cette derni\u00e8re, aussi nomm\u00e9e Abell 71 est une n\u00e9buleuse plan\u00e9taire r\u00e9sultant de la mort d&rsquo;une \u00e9toile comme notre soleil il y a environ 18500 ans.<br><br>Cette image, r\u00e9alis\u00e9e par Lo\u00efck dans les Yvelines, a n\u00e9cessit\u00e9 9h15 de pose au total, avec une lunette 61EDPHIII associ\u00e9e \u00e0 une cam\u00e9ra ASI585MC Air.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"637\" src=\"https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/RGB_Starless_Stars-1024x637.jpg\" alt=\"\" class=\"wp-image-2682\" srcset=\"https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/RGB_Starless_Stars-1024x637.jpg 1024w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/RGB_Starless_Stars-300x187.jpg 300w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/RGB_Starless_Stars-768x478.jpg 768w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/RGB_Starless_Stars-100x62.jpg 100w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/RGB_Starless_Stars-1536x956.jpg 1536w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/RGB_Starless_Stars-2048x1274.jpg 2048w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/RGB_Starless_Stars-200x124.jpg 200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Photo Lo\u00efck Viger<\/em><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"637\" src=\"https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best-1024x637.jpg\" alt=\"\" class=\"wp-image-2683\" srcset=\"https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best-1024x637.jpg 1024w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best-300x187.jpg 300w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best-768x478.jpg 768w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best-100x62.jpg 100w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best-1536x956.jpg 1536w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best-2048x1274.jpg 2048w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best-200x124.jpg 200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Idem en traitement HOO<\/em><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"637\" src=\"https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best_Annotated-1024x637.jpg\" alt=\"\" class=\"wp-image-2684\" srcset=\"https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best_Annotated-1024x637.jpg 1024w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best_Annotated-300x187.jpg 300w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best_Annotated-768x478.jpg 768w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best_Annotated-100x62.jpg 100w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best_Annotated-1536x956.jpg 1536w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best_Annotated-2048x1274.jpg 2048w, https:\/\/vega78astronomie.fr\/wp-content\/uploads\/2026\/10\/HOO_Starless_Stars_Best_Annotated-200x124.jpg 200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Avec les annotations<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voici un tr\u00e8s beau trio de n\u00e9buleuses en \u00e9mission situ\u00e9es pr\u00e8s de Deneb dans la constellation du Cygne. Cette r\u00e9gion du ciel, entre 7000 et 13000 ann\u00e9es-lumi\u00e8re de la Terre, comporte de nombreuses nu\u00e9es d&rsquo;hydrog\u00e8ne ionis\u00e9 par le rayonnement UV intense d&rsquo;\u00e9toiles massives et jeunes. D&rsquo;o\u00f9 la dominante rouge de l&rsquo;image, pr\u00e9sent\u00e9e ici en deux [&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],"tags":[142,141,143],"class_list":["post-2681","post","type-post","status-publish","format-standard","hentry","category-ciel-profond","tag-sh2-112","tag-sh2-115","tag-sh2-116"],"_links":{"self":[{"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/posts\/2681","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=2681"}],"version-history":[{"count":1,"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/posts\/2681\/revisions"}],"predecessor-version":[{"id":2685,"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/posts\/2681\/revisions\/2685"}],"wp:attachment":[{"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/media?parent=2681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/categories?post=2681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vega78astronomie.fr\/index.php\/wp-json\/wp\/v2\/tags?post=2681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}