{"id":2194,"date":"2025-04-11T14:01:19","date_gmt":"2025-04-11T20:01:19","guid":{"rendered":"https:\/\/albersheim.com\/wordpress\/?p=2194"},"modified":"2025-04-11T14:01:20","modified_gmt":"2025-04-11T20:01:20","slug":"crescent-nebula","status":"publish","type":"post","link":"https:\/\/albersheim.com\/wordpress\/2025\/04\/11\/crescent-nebula\/","title":{"rendered":"Crescent Nebula"},"content":{"rendered":"\n

The Crescent Nebula<\/strong> (oka SH2-105<\/strong>) is an emision nebula in the constellation Cygnus, about 5000 light-years away from Earth, or 29,400 trillion miles away. It is formed by the fast stellar from the <\/a>Wolf-Rayet star colliding with and energizing the slower moving wind ejected by the star when it became a red giant star around 250,000 to 400,000 years ago. The result of the wind collision is a shell and two shock waved, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to x-ray-emitting temperatures. The surrounding nebulosity is mostly hydrogen gas, indicated by its typical red color. <\/p>\n\n\n\n

This particular image is comprised of 40 subs @ 300s, 53 subs @ 600s (730mins or 12+ hrs) and was calibrated using 60 dark frames, 60 bias frames, and 60 flat images.<\/p>\n\n\n\n

\"Crescent
Crescent Nebula<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

The Crescent Nebula (oka SH2-105) is an emision nebula in the constellation Cygnus, about 5000 light-years away from Earth, or 29,400 trillion<\/p>\n

Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-2194","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":2279,"url":"https:\/\/albersheim.com\/wordpress\/2025\/07\/20\/the-phantom-of-the-opera-nebula\/","url_meta":{"origin":2194,"position":0},"title":"The Phantom of the Opera Nebula","author":"admin_j9ezzpi4","date":"July 20, 2025","format":false,"excerpt":"Start the music! With \u201cChildren of the Night\u201d playing in my head, I shot this faint target last night. Sh2-173 is an extremely faint emission nebula rich in ionized Hydrogen with a diameter of 77 light-years. It is part of the Perseus arm of our Milky Way Galaxy. Its shape\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Phantom of the Opera Nebula","src":"https:\/\/i0.wp.com\/albersheim.com\/wordpress\/wp-content\/uploads\/2025\/07\/sh2-173-phantom-sq-cr-scaled.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/albersheim.com\/wordpress\/wp-content\/uploads\/2025\/07\/sh2-173-phantom-sq-cr-scaled.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/albersheim.com\/wordpress\/wp-content\/uploads\/2025\/07\/sh2-173-phantom-sq-cr-scaled.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/albersheim.com\/wordpress\/wp-content\/uploads\/2025\/07\/sh2-173-phantom-sq-cr-scaled.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/albersheim.com\/wordpress\/wp-content\/uploads\/2025\/07\/sh2-173-phantom-sq-cr-scaled.jpeg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/albersheim.com\/wordpress\/wp-content\/uploads\/2025\/07\/sh2-173-phantom-sq-cr-scaled.jpeg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/posts\/2194","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/comments?post=2194"}],"version-history":[{"count":1,"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/posts\/2194\/revisions"}],"predecessor-version":[{"id":2195,"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/posts\/2194\/revisions\/2195"}],"wp:attachment":[{"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/media?parent=2194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/categories?post=2194"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/tags?post=2194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}