{"id":3721,"date":"2026-02-23T16:18:52","date_gmt":"2026-02-23T16:18:52","guid":{"rendered":"https:\/\/astrohodonin.cz\/index.php\/2026\/02\/23\/plejady-hvezdokupa-sedm-sester\/"},"modified":"2026-02-23T16:18:52","modified_gmt":"2026-02-23T16:18:52","slug":"plejady-hvezdokupa-sedm-sester","status":"publish","type":"post","link":"https:\/\/astrohodonin.cz\/index.php\/2026\/02\/23\/plejady-hvezdokupa-sedm-sester\/","title":{"rendered":"Plej\u00e1dy: Hv\u011bzdokupa Sedm sester"},"content":{"rendered":"<p>Vid\u011bli jste n\u011bkdy hv\u011bzdokupu Plej\u00e1dy? I kdy\u017e ano, pravd\u011bpodobn\u011b jste ji nikdy nevid\u011bli tak velkou a jasnou jako na t\u00e9to fotografii. Plej\u00e1dy jsou snad nejzn\u00e1m\u011bj\u0161\u00ed hv\u011bzdokupou na obloze a jejich jasn\u00e9 hv\u011bzdy lze vid\u011bt pouh\u00fdm okem i z hlubin m\u011bsta zne\u010di\u0161t\u011bn\u00e9ho sv\u011btlem. P\u0159i dlouh\u00e9 expozici z tmav\u00e9ho m\u00edsta je v\u0161ak prachov\u00fd mrak obklopuj\u00edc\u00ed hv\u011bzdokupu Plej\u00e1dy velmi dob\u0159e viditeln\u00fd. Na t\u00e9to fotografii s expozic\u00ed 18 hodin, po\u0159\u00edzen\u00e9 z Bory Tucholskie v Polsku, je zachycena oblast oblohy n\u011bkolikr\u00e1t v\u011bt\u0161\u00ed ne\u017e velikost \u00fapl\u0148ku. Plej\u00e1dy, zn\u00e1m\u00e9 tak\u00e9 jako Sedm sester a M45, le\u017e\u00ed asi 400 sv\u011bteln\u00fdch let daleko ve sm\u011bru souhv\u011bzd\u00ed B\u00fdka (Taurus).  B\u011b\u017en\u00e1 legenda s modern\u00edm n\u00e1dechem \u0159\u00edk\u00e1, \u017ee jedna z jasn\u011bj\u0161\u00edch hv\u011bzd od doby pojmenov\u00e1n\u00ed hv\u011bzdokupy pohasla, tak\u017ee pouh\u00fdm okem je vid\u011bt pouze \u0161est sestersk\u00fdch hv\u011bzd. Skute\u010dn\u00fd po\u010det viditeln\u00fdch hv\u011bzd v Plej\u00e1d\u00e1ch v\u0161ak m\u016f\u017ee b\u00fdt v\u00edce \u010di m\u00e9n\u011b ne\u017e sedm, v z\u00e1vislosti na temnot\u011b okoln\u00ed oblohy a ostrosti zraku pozorovatele. Sky Surprise: Jak\u00fd obr\u00e1zek APOD zve\u0159ejnil v den va\u0161ich narozenin? (po roce 1995)<\/p>\n<p><!-- astropress --><\/p>\n<p>**Credit**: Kamil Fiedosiuk<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vid\u011bli jste n\u011bkdy hv\u011bzdokupu Plej\u00e1dy? I kdy\u017e ano, pravd\u011bpodobn\u011b jste ji nikdy nevid\u011bli tak velkou a jasnou jako na t\u00e9to fotografii. Plej\u00e1dy jsou snad nejzn\u00e1m\u011bj\u0161\u00ed hv\u011bzdokupou na obloze a jejich [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3722,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3721","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\/3721","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=3721"}],"version-history":[{"count":0,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts\/3721\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media\/3722"}],"wp:attachment":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media?parent=3721"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/categories?post=3721"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/tags?post=3721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}