{"id":413915,"date":"2017-05-25T02:00:00","date_gmt":"2017-05-24T23:00:00","guid":{"rendered":"https:\/\/www.fyysika.ee\/?guid=09295cb8ac0b002caba6260b292e5a19"},"modified":"2017-05-25T02:00:00","modified_gmt":"2017-05-24T23:00:00","slug":"interferometry-of-binary-stars-using-polymer-optical-fibres-2","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=413915","title":{"rendered":"Interferometry of binary stars using polymer optical fibres"},"content":{"rendered":"<p>We show a laboratory experiment in which students can learn the use of interferometry as a valuable<br \/>\ntool in astronomy. We detail experiments based on the use of the classic Michelson stellar<br \/>\ninterferometer able to reproduce the size of single stars and to characterize double star systems.<br \/>\nStellar sources, single and double, are reproduced by a laser light emerging from the circular end<br \/>\nfaces of one or two step-index polymer optical fibres. Light coming from the fibre end faces passes<br \/>\nthrough two identical pinholes located on a lid covering the objective of a small telescope, thus<br \/>\nproducing interference fringes. The measurement of the fringe visibilities allows us to estimate<br \/>\nboth the diameters of the simulated stars and the separation between them, with errors lower than<br \/>\n18% for a range of light sources that can recreate the apparent size of the outer Solar System<br \/>\nplanets Uranus and Neptune and the binary properties of the Alpha Centauri system. The exercises<br \/>\nhere described illu&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We show a laboratory experiment in which students can learn the use of interferometry as a valuable<br \/>\ntool in astronomy. We detail experiments based on the use of the classic Michelson stellar<br \/>\ninterferometer able to reproduce the size of single stars a&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-413915","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/413915","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=413915"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/413915\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=413915"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=413915"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=413915"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}