{"id":903,"date":"2020-12-18T13:48:36","date_gmt":"2020-12-18T18:48:36","guid":{"rendered":"https:\/\/blogs.haverford.edu\/astronoblog\/?p=903"},"modified":"2020-12-18T13:48:36","modified_gmt":"2020-12-18T18:48:36","slug":"the-ring-nebula","status":"publish","type":"post","link":"https:\/\/blogs.haverford.edu\/astronoblog\/2020\/12\/18\/the-ring-nebula\/","title":{"rendered":"The Ring Nebula"},"content":{"rendered":"

Here’s a version of the Ring Nebula, composed by Kevin Sang ’22 using data I took in the summer.<\/p>\n

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Kevin explains “This is a composite image of Messier 57\/NGC 6720, also known as the Ring Nebula. The Ring Nebula is roughly 2,600 lightyears away and has an apparent magnitude of 8.8. It is a planetary nebula made up of ionized gas surrounding a stellar object that is evolving to become a white dwarf.<\/p>\n

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The image is taken using a 16-inch optical telescope and a Charged Coupled Device (CCD). The CCD consists of many individual pixel cells, each of which counts the amount of photons that it receives over a period of exposure time. Combined with SII, H-alpha, and OIII filters, images of the Ring Nebula in different wavelengths can be captured, and by using AstroImageJ, we composed a RGB image of it.”<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Here’s a version of the Ring Nebula, composed by Kevin Sang ’22 using data I took in the summer. Kevin explains “This is a composite image of Messier 57\/NGC 6720, also known as the Ring Nebula. The Ring Nebula is roughly 2,600 lightyears away and has an apparent magnitude of 8.8. It is a planetary … Continue reading “The Ring Nebula”<\/span><\/a><\/p>\n","protected":false},"author":25,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"wds_primary_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-903","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blogs.haverford.edu\/astronoblog\/wp-json\/wp\/v2\/posts\/903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.haverford.edu\/astronoblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.haverford.edu\/astronoblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.haverford.edu\/astronoblog\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.haverford.edu\/astronoblog\/wp-json\/wp\/v2\/comments?post=903"}],"version-history":[{"count":0,"href":"https:\/\/blogs.haverford.edu\/astronoblog\/wp-json\/wp\/v2\/posts\/903\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.haverford.edu\/astronoblog\/wp-json\/wp\/v2\/media?parent=903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.haverford.edu\/astronoblog\/wp-json\/wp\/v2\/categories?post=903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.haverford.edu\/astronoblog\/wp-json\/wp\/v2\/tags?post=903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}