{"id":1016,"date":"2015-11-24T13:22:28","date_gmt":"2015-11-24T12:22:28","guid":{"rendered":"https:\/\/cielipiemontesi.it\/?p=1016"},"modified":"2015-11-24T13:32:20","modified_gmt":"2015-11-24T12:32:20","slug":"apod-2015-november-23-a-212-hour-exposure-of-orion","status":"publish","type":"post","link":"https:\/\/cielipiemontesi.it\/?p=1016","title":{"rendered":"APOD: 2015 November 23 – A 212 Hour Exposure of Orion"},"content":{"rendered":"

\"\"<\/a>A different astronomy and space science related image is featured each day, along with a brief explanation.<\/p>\n

he constellation of Orion is much more than three stars in a row. It is a direction in space that is rich<\/a><\/strong> with impressive nebulas. To better appreciate this well-known swath of sky, an extremely long exposure<\/a><\/strong> was taken over many clear nights in 2013 and 2014. After 212 hours of camera time and an additional year<\/a><\/strong> of processing, the featured 1400-exposure collage spanning over 40 times the angular diameter<\/a><\/strong> of the Moon<\/a><\/strong> emerged.
\nOf the many interesting details that have become visible, one that particularly draws the eye is Barnard’s Loop<\/a><\/strong>, the bright red circular filament arcing down from the middle. The Rosette Nebula is not<\/i> the giant red nebula near the top of the image — that is a larger but lesser known nebula known as Lambda Orionis.
\nThe Rosette Nebula<\/a><\/strong> is<\/i> visible, though: it is the red and white nebula on the upper left. The bright orange star just above the frame center is Betelgeuse<\/a><\/strong>, while the bright blue star on the lower right is Rigel<\/a><\/strong>. Other famous nebulas visible include the Witch Head Nebula<\/a><\/strong>, the Flame Nebula<\/a><\/strong>, the Fox Fur Nebula<\/a><\/strong>, and, if you know just where to look, the comparatively small Horsehead Nebula<\/a><\/strong>. About those famous three stars<\/a><\/strong> that cross the belt of Orion the Hunter<\/a><\/strong> — in this busy frame they can be hard to locate, but a discerning eye will find them just below and to the right of the image center.
\nSorgente: APOD: 2015 November 23 – A 212 Hour Exposure of Orion<\/a><\/em><\/strong><\/p>\n

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A different astronomy and space science related image is featured each day, along with a brief explanation. he constellation of Orion is much more than three stars in a row. It is a direction in space that is rich with impressive nebulas. To better appreciate this well-known swath of sky, an extremely long exposure was … <\/p>\n

Continua a leggere<\/a><\/p>\n","protected":false},"author":1,"featured_media":444,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[596,724],"tags":[449,745,226,746,747],"class_list":["post-1016","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fisica-stellare","category-nebulose","tag-apod","tag-long-exposure","tag-nasa","tag-orion","tag-orion-nebula","item-wrap"],"_links":{"self":[{"href":"https:\/\/cielipiemontesi.it\/index.php?rest_route=\/wp\/v2\/posts\/1016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cielipiemontesi.it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cielipiemontesi.it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cielipiemontesi.it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cielipiemontesi.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1016"}],"version-history":[{"count":3,"href":"https:\/\/cielipiemontesi.it\/index.php?rest_route=\/wp\/v2\/posts\/1016\/revisions"}],"predecessor-version":[{"id":1020,"href":"https:\/\/cielipiemontesi.it\/index.php?rest_route=\/wp\/v2\/posts\/1016\/revisions\/1020"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cielipiemontesi.it\/index.php?rest_route=\/wp\/v2\/media\/444"}],"wp:attachment":[{"href":"https:\/\/cielipiemontesi.it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cielipiemontesi.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cielipiemontesi.it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}