{"id":4037,"date":"2026-08-28T15:49:30","date_gmt":"2026-08-28T15:49:30","guid":{"rendered":"https:\/\/astrohodonin.cz\/index.php\/2026\/08\/28\/obloha-nad-paranalem-se-meni\/"},"modified":"2026-08-28T15:49:30","modified_gmt":"2026-08-28T15:49:30","slug":"obloha-nad-paranalem-se-meni","status":"publish","type":"post","link":"https:\/\/astrohodonin.cz\/index.php\/2026\/08\/28\/obloha-nad-paranalem-se-meni\/","title":{"rendered":"Obloha nad Paranalem se m\u011bn\u00ed"},"content":{"rendered":"<p>Na zem\u011bpisn\u00e9 \u0161\u00ed\u0159ce observato\u0159e ESO Paranal v Chile, p\u0159ibli\u017en\u011b 25 stup\u0148\u016f ji\u017en\u011b, posouv\u00e1 rotace Zem\u011b povrch planety sm\u011brem na v\u00fdchod rychlost\u00ed p\u0159es 1 500 kilometr\u016f za hodinu. A\u010dkoli je to rychlej\u0161\u00ed ne\u017e rychlost zvuku na \u00farovni mo\u0159sk\u00e9 hladiny, tento pohyb je nepost\u0159ehnuteln\u00fd. P\u0159esto lze tento pohyb odhalit ve zd\u00e1nliv\u00e9 rotaci no\u010dn\u00ed oblohy prost\u0159ednictv\u00edm fotografov\u00e1n\u00ed stop hv\u011bzd. Tento sn\u00edmek stop hv\u011bzd byl vytvo\u0159en slo\u017een\u00edm 300 po sob\u011b jdouc\u00edch 25sekundov\u00fdch expozic po\u0159\u00edzen\u00fdch digit\u00e1ln\u00ed kamerou upevn\u011bnou na stativu, aby bylo mo\u017en\u00e9 zachytit oblouky stop hv\u011bzd. Tyto ladn\u00e9 oblouky jsou soust\u0159edn\u00e9 a jejich st\u0159ed le\u017e\u00ed na ji\u017en\u00edm nebesk\u00e9m p\u00f3lu, co\u017e je prodlou\u017een\u00ed zemsk\u00e9 osy ot\u00e1\u010den\u00ed do vesm\u00edru na ji\u017en\u00ed polokouli. Jeden z provozovan\u00fdch 1,8metrov\u00fdch pomocn\u00fdch dalekohled\u016f observato\u0159e, AT 3, se objevuje pod ji\u017en\u00edm nebesk\u00fdm p\u00f3lem, slab\u011b osv\u011btlen\u00fd v pop\u0159ed\u00ed t\u00e9to dob\u0159e napl\u00e1novan\u00e9 sc\u00e9ny z rotuj\u00edc\u00ed planety.  Hlavn\u00ed str\u00e1nka APODu NASA se st\u011bhuje: Z apod.nasa.gov na science.nasa.gov\/apod<\/p>\n<p><!-- astropress --><\/p>\n<p>**Credit**: Osvaldo Castillo<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Na zem\u011bpisn\u00e9 \u0161\u00ed\u0159ce observato\u0159e ESO Paranal v Chile, p\u0159ibli\u017en\u011b 25 stup\u0148\u016f ji\u017en\u011b, posouv\u00e1 rotace Zem\u011b povrch planety sm\u011brem na v\u00fdchod rychlost\u00ed p\u0159es 1 500 kilometr\u016f za hodinu. A\u010dkoli je to [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4038,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4037","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nasa"],"_links":{"self":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts\/4037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/comments?post=4037"}],"version-history":[{"count":0,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts\/4037\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media\/4038"}],"wp:attachment":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media?parent=4037"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/categories?post=4037"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/tags?post=4037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}