{"id":3686,"date":"2012-12-18T05:01:34","date_gmt":"2012-12-18T03:01:34","guid":{"rendered":"http:\/\/www.ilkkimbuldu.com\/?p=3686"},"modified":"2016-12-26T00:27:05","modified_gmt":"2016-12-25T22:27:05","slug":"sekstanti-kim-buldu","status":"publish","type":"post","link":"https:\/\/www.ilkkimbuldu.com\/?p=3686","title":{"rendered":"Sekstant’\u0131 kim buldu"},"content":{"rendered":"

Denizlerde gemicilerin, bulunduklar\u0131 yerin mevkiini\u00a0anlayabilmeleri i\u00e7in, g\u00fcne\u015fle ufuk d\u00fczlemi aras\u0131ndaki a\u00e7\u0131sal mes\u00e2feyi \u00f6l\u00e7en optik seyir cihaz\u0131.\u00a0D\u00e2irenin alt\u0131da biri b\u00fcy\u00fckl\u00fc\u011f\u00fcnde bir a\u00e7\u0131ya s\u00e2hip oldu\u011fu i\u00e7in, sekstant ismini alm\u0131\u015ft\u0131r. 1731 senesinde\u00a0John Handley taraf\u0131ndan yap\u0131lan ilk 45 derecelik oktantla modern sekstant aras\u0131nda hemen hi\u00e7 fark\u00a0yoktur.<\/p>\n

Sekstant ayn\u0131 zamanda gemiden veya u\u00e7aktan herhangi bir g\u00f6k cisminin y\u00fcksekli\u011fini \u00f6l\u00e7meye\u00a0de yarar. Bunlardan en basiti kuzey yar\u0131m k\u00fcrede kutup y\u0131ld\u0131z\u0131n\u0131n a\u00e7\u0131sal y\u00fcksekli\u011fini bulmakt\u0131r.\u00a0Sekstantla en hassas mevki t\u00e2yini, g\u00fcne\u015fin en y\u00fcksek noktas\u0131na ula\u015ft\u0131\u011f\u0131 \u00f6\u011flen vakti yap\u0131l\u0131r. Bu en\u00a0y\u00fcksek noktaya g\u00fcne\u015fin \u00fcst y\u00fccelim noktas\u0131 denir.<\/p>\n

Sekstantla a\u00e7\u0131 \u00f6l\u00e7mek i\u00e7in, sekstant d\u00fcrb\u00fcn\u00fcnden gemici, ufuk hatt\u0131na bakar. Gemici, gemi
\ng\u00fcvertesinde dik olarak durdu\u011fu ve gemiyle beraber salland\u0131\u011f\u0131 i\u00e7in \u00f6l\u00e7\u00fclecek a\u00e7\u0131 hi\u00e7 de\u011fi\u015fmez.
\nG\u00fcne\u015fin aynalardan yans\u0131yan g\u00f6r\u00fcnt\u00fcs\u00fc de tam ufuk hatt\u0131na \u00e7ak\u0131\u015ft\u0131\u011f\u0131 an sekstant a\u00e7\u0131s\u0131 okunur. A\u00e7\u0131n\u0131n
\nokundu\u011fu yerel saat da tablolarda kullan\u0131lmak \u00fczere hassas olarak tespit edilir.<\/p>\n

Modern sekstantlarda ufuk aynas\u0131n\u0131n yar\u0131s\u0131 g\u00fcm\u00fc\u015flenmi\u015ftir. Bu durumda sekstant teleskopundan
\nbak\u0131ld\u0131\u011f\u0131nda teleskopta <\/a>hem g\u00fcne\u015f, hem de ufuk d\u00fczlemi yanyana g\u00f6r\u00fcl\u00fcr. \u00d6l\u00e7\u00fcm kolayl\u0131\u011f\u0131 i\u00e7in
\ng\u00fcne\u015fin parlakl\u0131\u011f\u0131n\u0131 azaltan filitreleme, a\u00e7\u0131y\u0131 hassas bir \u015fekilde okumak ve a\u00e7\u0131 de\u011fi\u015ftirmede s\u00fcratli
\nolabilmek i\u00e7in verniyer sistemi de bulunur.<\/p>\n

Sekstant\u0131n hava trafi\u011finde de \u00f6nemi vard\u0131r. U\u00e7ak sekstant\u0131nda \u00e7o\u011fu kere ufuk d\u00fczlemi yerine su
\ntesviye \u00e2leti \u00f6l\u00e7\u00fcmde yatay hatt\u0131 verir. Sekstant u\u00e7akta astrdom denilen \u015feffaf \u00e7\u0131k\u0131nt\u0131ya yerle\u015ftirilir.<\/p>\n","protected":false},"excerpt":{"rendered":"

Denizlerde gemicilerin, bulunduklar\u0131 yerin mevkiini\u00a0anlayabilmeleri i\u00e7in, g\u00fcne\u015fle ufuk d\u00fczlemi aras\u0131ndaki a\u00e7\u0131sal mes\u00e2feyi \u00f6l\u00e7en optik seyir cihaz\u0131.\u00a0D\u00e2irenin alt\u0131da biri b\u00fcy\u00fckl\u00fc\u011f\u00fcnde bir a\u00e7\u0131ya s\u00e2hip oldu\u011fu i\u00e7in, sekstant ismini alm\u0131\u015ft\u0131r. 1731 senesinde\u00a0John Handley…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,1],"tags":[2192],"class_list":["post-3686","post","type-post","status-publish","format-standard","hentry","category-gezi","category-teknoloji","tag-sekstant"],"_links":{"self":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/3686"}],"collection":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3686"}],"version-history":[{"count":4,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/3686\/revisions"}],"predecessor-version":[{"id":7192,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=\/wp\/v2\/posts\/3686\/revisions\/7192"}],"wp:attachment":[{"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ilkkimbuldu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}