{"id":195105,"date":"2020-06-20T14:13:39","date_gmt":"2020-06-20T13:13:39","guid":{"rendered":"http:\/\/zakrasnejsivimperk.cz\/?p=195105"},"modified":"2020-06-20T22:24:32","modified_gmt":"2020-06-20T21:24:32","slug":"astronomicky-ustav-akademie-ved-cr-letni-slunovrat-je-tu-zacina-astronomicke-leto-ac-to-tak-nevypada","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=195105","title":{"rendered":"ASTRONOMICK\u00dd \u00daSTAV AKADEMIE V\u011aD \u010cR: Letn\u00ed slunovrat je tu \u2013 za\u010d\u00edn\u00e1 astronomick\u00e9 l\u00e9to (a\u010d to tak nevypad\u00e1)"},"content":{"rendered":"

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20. \u010dervna ve 23:44 st\u0159edoevropsk\u00e9ho letn\u00edho \u010dasu (tedy toho, kter\u00fd pr\u00e1v\u011b pou\u017e\u00edv\u00e1me) za\u010dne astronomick\u00e9 l\u00e9to. V tomto okam\u017eiku toti\u017e dos\u00e1hne Slunce (bez ohledu na to, \u017ee pr\u00e1v\u011b nebude na obloze vid\u011bt) na sv\u00e9 ka\u017edoro\u010dn\u00ed dr\u00e1ze nejsevern\u011bj\u0161\u00edho bodu, vstoup\u00ed do znamen\u00ed Raka a severn\u00ed polokoule Zem\u011b se nejv\u00edce p\u0159iklon\u00ed ke Slunci.<\/h6>\n

\"\"Noc ze soboty na ned\u011bli tak bude nejkrat\u0161\u00ed v roce. Slunce u n\u00e1s setrv\u00e1 16 hodin 22 minut\u00a0nad obzorem a jen 7 hodin 38 minut zb\u00fdv\u00e1 pro letn\u00ed noc. Tak m\u016f\u017eeme vysv\u011btlit, pro\u010d jsou u n\u00e1s noci v tomto obdob\u00ed hodn\u011b sv\u011btl\u00e9 a \u00fapln\u011b se nesetm\u00ed. Po celou noc trv\u00e1 jen tzv. astronomick\u00fd soumrak a nenast\u00e1v\u00e1 skute\u010dn\u00e1 astronomick\u00e1 noc. <\/span><\/p>\n

Obdob\u00ed kolem letn\u00edho slunovratu p\u0159in\u00e1\u0161\u00ed ale v\u00fdjime\u010dnou p\u0159\u00edle\u017eitost pozorovat no\u010dn\u00ed sv\u00edt\u00edc\u00ed oblaka (http:\/\/ukazy.astro.cz\/nlc.php<\/a><\/strong>), letos u\u017e byla n\u011bkolikr\u00e1t pozorov\u00e1na. Ide\u00e1ln\u00ed doba k pozorov\u00e1n\u00ed ve\u010der je zhruba od 22:30. Pozn\u00e1te je snadno, vypadaj\u00ed jako st\u0159\u00edb\u0159it\u00e1 jemn\u011b sv\u00edt\u00edc\u00ed pavu\u010dina.<\/span><\/p>\n

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Oslavte letn\u00ed slunovrat v Praze na Karlov\u011b most\u011b u Starom\u011bstsk\u00e9 mosteck\u00e9 v\u011b\u017ee<\/p>\n

Ka\u017edoro\u010dn\u011b o letn\u00edm slunovratu v poledne vrh\u00e1 plastika lva po velmi kr\u00e1tkou dobu st\u00edn na erb se svatov\u00e1clavskou orlic\u00ed. Doch\u00e1z\u00ed k tomu v jedin\u00fd den v roce. A v ten sam\u00fd den (na kter\u00fd ve st\u0159edov\u011bku p\u0159ipadal sv\u00e1tek svat\u00e9ho V\u00edta) ve\u010der zapad\u00e1 Slunce p\u0159i pohledu od paty v\u011b\u017ee nad m\u00edstem, kde jsou ve svatov\u00edtsk\u00e9 katedr\u00e1le ulo\u017eeny ostatky sv. V\u00edta. Slunce nejprve projde velkou ji\u017en\u00ed v\u011b\u017e\u00ed katedr\u00e1ly (pod n\u00ed je pochov\u00e1n sv. V\u00e1clav), pak ozna\u010d\u00ed v\u00fdchodn\u00ed v\u011b\u017e (zde spo\u010d\u00edvaj\u00ed ostatky sv. Vojt\u011bcha) a zapadne v m\u00edstech ulo\u017een\u00ed ostatk\u016f sv. V\u00edta. Jde o d\u016fkladn\u00e9 propojen\u00ed Starom\u011bstsk\u00e9 mosteck\u00e9 v\u011b\u017ee s pl\u00e1nem a polohou cel\u00e9ho m\u011bsta. Na obr\u00e1zku z\u00e1pad Slunce p\u0159i letn\u00edm slunovratu nad katedr\u00e1lou zachycen\u00fd od Starom\u011bstsk\u00e9 mosteck\u00e9 v\u011b\u017ee – autor Ivan Korda\u010d.<\/p>\n<\/div>\n

FB \u2013\u00a0Astronomick\u00fd \u00fastav AV \u010cR<\/a><\/strong><\/p>\n

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