{"id":835,"date":"2025-10-02T03:26:20","date_gmt":"2025-10-02T03:26:20","guid":{"rendered":"https:\/\/www.lonepeak.space\/?p=835"},"modified":"2025-10-02T03:31:31","modified_gmt":"2025-10-02T03:31:31","slug":"ic-5146","status":"publish","type":"post","link":"https:\/\/www.lonepeak.space\/index.php\/2025\/10\/02\/ic-5146\/","title":{"rendered":"IC 5146"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.lonepeak.space\/wp-content\/uploads\/2025\/10\/IC-5146.webp\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"672\" src=\"https:\/\/www.lonepeak.space\/wp-content\/uploads\/2025\/10\/IC-5146-1024x672.webp\" alt=\"\" class=\"wp-image-834\" srcset=\"https:\/\/www.lonepeak.space\/wp-content\/uploads\/2025\/10\/IC-5146-1024x672.webp 1024w, https:\/\/www.lonepeak.space\/wp-content\/uploads\/2025\/10\/IC-5146-300x197.webp 300w, https:\/\/www.lonepeak.space\/wp-content\/uploads\/2025\/10\/IC-5146-768x504.webp 768w, https:\/\/www.lonepeak.space\/wp-content\/uploads\/2025\/10\/IC-5146-1536x1008.webp 1536w, https:\/\/www.lonepeak.space\/wp-content\/uploads\/2025\/10\/IC-5146-2048x1343.webp 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>Wikipedia Description:   I<strong>C 5146<\/strong> (also <strong>Caldwell 19<\/strong>, <strong>Sh 2-125<\/strong>, <strong>Barnard 168<\/strong>, and the <strong>Cocoon Nebula<\/strong>) is a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Reflection_nebula\">reflection<\/a><sup><a href=\"https:\/\/en.wikipedia.org\/wiki\/IC_5146#cite_note-yard-2\">[2]<\/a><\/sup>\/<a href=\"https:\/\/en.wikipedia.org\/wiki\/Emission_nebula\">emission<\/a><sup><a href=\"https:\/\/en.wikipedia.org\/wiki\/IC_5146#cite_note-dougs-3\">[3]<\/a><\/sup> <a href=\"https:\/\/en.wikipedia.org\/wiki\/Nebula\">nebula<\/a> and <a href=\"https:\/\/en.wikipedia.org\/wiki\/Caldwell_catalogue\">Caldwell object<\/a> in the constellation <a href=\"https:\/\/en.wikipedia.org\/wiki\/Cygnus_(constellation)\">Cygnus<\/a>. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula. The cluster is also known as Collinder 470.<sup><a href=\"https:\/\/en.wikipedia.org\/wiki\/IC_5146#cite_note-4\">[4]<\/a><\/sup> It shines at magnitude +10.0<sup><a href=\"https:\/\/en.wikipedia.org\/wiki\/IC_5146#cite_note-atlas-5\">[5]<\/a><\/sup>\/+9.3<sup><a href=\"https:\/\/en.wikipedia.org\/wiki\/IC_5146#cite_note-dougs-3\">[3]<\/a><\/sup>\/+7.2.<sup><a href=\"https:\/\/en.wikipedia.org\/wiki\/IC_5146#cite_note-starry-6\">[6]<\/a><\/sup> Its celestial coordinates are RA 21<sup>h<\/sup> 53.5<sup>m<\/sup> , dec +47\u00b0\u00a016\u2032. It is located near the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Naked-eye\">naked-eye<\/a> star <a href=\"https:\/\/en.wikipedia.org\/wiki\/Pi_Cygni\">Pi Cygni<\/a>, the open cluster <a href=\"https:\/\/en.wikipedia.org\/wiki\/NGC_7209\">NGC 7209<\/a> in <a href=\"https:\/\/en.wikipedia.org\/wiki\/Lacerta\">Lacerta<\/a>, and the bright open cluster <a href=\"https:\/\/en.wikipedia.org\/wiki\/Messier_39\">M39<\/a>.<sup><a href=\"https:\/\/en.wikipedia.org\/wiki\/IC_5146#cite_note-yard-2\">[2]<\/a><a href=\"https:\/\/en.wikipedia.org\/wiki\/IC_5146#cite_note-atlas-5\">[5]<\/a><\/sup> The cluster is about 4,000\u00a0ly away, and the central star that lights it formed about 100,000 years ago;<sup><a href=\"https:\/\/en.wikipedia.org\/wiki\/IC_5146#cite_note-7\">[7]<\/a><\/sup> the nebula is about 12\u00a0arcmins across, which is equivalent to a span of 15 light years<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/IC_5146\" data-type=\"link\" data-id=\"https:\/\/en.wikipedia.org\/wiki\/IC_5146\">Wikipedia Link<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><br>Acquisition Details:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.49), 19px);\"><table class=\"has-fixed-layout\" style=\"border-top-style:none;border-top-width:0px;border-right-style:none;border-right-width:0px;border-bottom-style:none;border-bottom-width:0px;border-left-width:1px\"><tbody><tr><td>Telescope<\/td><td>Takahashi TOA-130<\/td><\/tr><tr><td>Optics<\/td><td>Takahashi TOA-645 Flattener<\/td><\/tr><tr><td>Filter<\/td><td>Optolong Ultimate Dual Band<\/td><\/tr><tr><td>Camera<\/td><td>ASI2600MC Pro OSC<\/td><\/tr><tr><td>Integration Time<\/td><td>6.25 hours<\/td><\/tr><tr><td>Subframes<\/td><td>75 x 300 seconds<\/td><\/tr><tr><td>Date<\/td><td>September 29, 2025<\/td><\/tr><tr><td>Location<\/td><td>Carlsbad, California<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Wikipedia Description: IC 5146 (also Caldwell 19, Sh 2-125, Barnard 168, and the Cocoon Nebula) is a reflection[2]\/emission[3] nebula and Caldwell object in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula. The cluster is also known as Collinder 470.[4] [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":834,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,12],"tags":[],"class_list":["post-835","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-everything","category-nebulas"],"_links":{"self":[{"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/posts\/835","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/comments?post=835"}],"version-history":[{"count":2,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/posts\/835\/revisions"}],"predecessor-version":[{"id":838,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/posts\/835\/revisions\/838"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/media\/834"}],"wp:attachment":[{"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/media?parent=835"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/categories?post=835"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/tags?post=835"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}