{"id":78389,"date":"2018-05-06T14:42:37","date_gmt":"2018-05-06T21:42:37","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2018\/05\/four-lasers-stream-into-the-night-sky"},"modified":"2018-05-09T11:07:44","modified_gmt":"2018-05-09T18:07:44","slug":"four-lasers-stream-into-the-night-sky","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2018\/05\/four-lasers-stream-into-the-night-sky","title":{"rendered":"Four lasers stream into the night sky"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/four-lasers-stream-into-the-night-sky.jpg\"><\/a><\/p>\n<p>One of the Unit Telescopes of ESO\u2019s Very Large Telescope (VLT) is producing an artificial star \u2014 a guide star \u2014 in the skies above the Atacama desert, above the flowing Milky Way.<\/p>\n<p>The <a href=\"http:\/\/www.eso.org\/sci\/facilities\/develop\/4LGSF.html\">Four Laser Guide Star Facility<\/a> (4LGSF) shines four 22-watt laser beams into the sky to create artificial <a href=\"https:\/\/en.wikipedia.org\/wiki\/Laser_guide_star\">guide stars<\/a> by making sodium atoms in the upper atmosphere glow so that they look just like real stars. The artificial stars allow the adaptive optics systems to compensate for the blurring caused by the Earth\u2019s atmosphere and so that the telescope can create sharp images.<\/p>\n<p><!-- Link: <a href=\"http:\/\/www.eso.org\/public\/australia\/images\/2017_11_18_upr_IMG_3318-laser-ok-CC\/\">http:\/\/www.eso.org\/public\/australia\/images\/2017_11_18_upr_IMG_3318-laser-ok-CC\/<\/a> --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>One of the Unit Telescopes of ESO\u2019s Very Large Telescope (VLT) is producing an artificial star \u2014 a guide star \u2014 in the skies above the Atacama desert, above the flowing Milky Way. The Four Laser Guide Star Facility (4LGSF) shines four 22-watt laser beams into the sky to create artificial guide stars by making [\u2026]<\/p>\n","protected":false},"author":396,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48,8],"tags":[],"class_list":["post-78389","post","type-post","status-publish","format-standard","hentry","category-particle-physics","category-space"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/78389","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/396"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=78389"}],"version-history":[{"count":1,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/78389\/revisions"}],"predecessor-version":[{"id":78503,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/78389\/revisions\/78503"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=78389"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=78389"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=78389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}