Leto\u0161n\u00ed maximum roje p\u0159ipad\u00e1 pr\u00e1v\u011b na tyto dny, konkr\u00e9tn\u011b na noc z \u00fater\u00fd na st\u0159edu. Pro pozorovatele v \u010cesku je ale kl\u00ed\u010dov\u00e9 spr\u00e1vn\u00e9 na\u010dasov\u00e1n\u00ed i realistick\u00e1 o\u010dek\u00e1v\u00e1n\u00ed. \u201eTento meteorick\u00fd roj je obecn\u011b l\u00e9pe pozorovateln\u00fd z ji\u017en\u00edch zem\u011bpisn\u00fdch \u0161\u00ed\u0159ek. Jeho radiant u n\u00e1s vych\u00e1z\u00ed nad obzor a\u017e p\u0159ed t\u0159et\u00ed hodinou rann\u00ed. D\u0159\u00edve nen\u00ed mo\u017en\u00e9 meteory roje pozorovat. Na pozorov\u00e1n\u00ed m\u00e1me zhruba 1,5 hodiny, pak u\u017e za\u010d\u00edn\u00e1 sv\u00edt\u00e1n\u00ed,\u201c upozor\u0148uje astronom Pavel Koten z Odd\u011blen\u00ed meziplanet\u00e1rn\u00ed hmoty Astronomick\u00e9ho \u00fastavu AV \u010cR.<\/p>\n
Pr\u00e1v\u011b n\u00edzk\u00e1 poloha radiantu je hlavn\u00edm d\u016fvodem, pro\u010d je aktivita u n\u00e1s ni\u017e\u0161\u00ed ne\u017e nap\u0159\u00edklad na rovn\u00edku nebo na ji\u017en\u00ed polokouli. Zat\u00edmco tam lze b\u011b\u017en\u011b spat\u0159it des\u00edtky meteor\u016f za hodinu, u n\u00e1s je situace skromn\u011bj\u0161\u00ed. \u201eZ na\u0161ich zem\u011bpisn\u00fdch \u0161\u00ed\u0159ek to b\u00fdv\u00e1 m\u00e9n\u011b i za dobr\u00fdch pozorovac\u00edch podm\u00ednek. Vzhledem k jasn\u00e9mu M\u011bs\u00edci se ob\u00e1v\u00e1m, \u017ee letos to budou sp\u00ed\u0161e jednotky meteor\u016f za hodinu,\u201c dopl\u0148uje Koten.<\/p>\n
Podm\u00ednky letos nav\u00edc v\u00fdrazn\u011b zhor\u0161uje M\u011bs\u00edc. Ten byl ned\u00e1vno v \u00fapl\u0148ku a je nad obzorem ve druh\u00e9 polovin\u011b noci, kdy se roj pozoruje nejl\u00e9pe. Jeho sv\u011btlo potla\u010d\u00ed slab\u0161\u00ed meteory, tak\u017ee na obloze vyniknou hlavn\u011b ty nejjasn\u011bj\u0161\u00ed. Tomu je pot\u0159eba p\u0159izp\u016fsobit i samotn\u00e9 pozorov\u00e1n\u00ed. \u201eObvykle m\u016f\u017ee b\u00fdt \u00fahel pohledu libovoln\u00fd, proto\u017ee meteory se objevuj\u00ed na cel\u00e9 obloze. Ale letos je nezbytn\u00e9 d\u00edvat se sm\u011brem, kde nebude M\u011bs\u00edc, ide\u00e1ln\u011b jej m\u00edt za z\u00e1dy,\u201c rad\u00ed Koten.<\/p>\n
Z\u00e1sadn\u00ed roli hraje i v\u00fdb\u011br m\u00edsta. Plat\u00ed jednoduch\u00e9 pravidlo: \u010d\u00edm tmav\u0161\u00ed obloha, t\u00edm lep\u0161\u00ed z\u00e1\u017eitek. \u201eNaj\u00edt si m\u00edsto daleko od m\u011bstsk\u00e9ho osv\u011btlen\u00ed je z\u00e1kladn\u00edm p\u0159edpokladem v\u017edy, ale za dne\u0161n\u00edch podm\u00ednek to bude je\u0161t\u011b d\u016fle\u017eit\u011bj\u0161\u00ed,\u201c vysv\u011btluje. Pokud by bylo mo\u017en\u00e9 skr\u00fdt se p\u0159ed z\u00e1\u0159\u00ed M\u011bs\u00edce za n\u011bjakou p\u0159\u00edrodn\u00ed p\u0159ek\u00e1\u017eku, kopec \u010di les, m\u016f\u017ee to podle n\u011bj pomoci.<\/p>\n
Nejd\u016fle\u017eit\u011bj\u0161\u00ed je trp\u011blivost<\/p>\n
\u00c9ta Akvaridy maj\u00ed nav\u00edc zaj\u00edmav\u00fd p\u016fvod. Jejich mate\u0159sk\u00fdm t\u011blesem je Halleyova kometa, kter\u00e1 ob\u011bhne slunce p\u0159ibli\u017en\u011b jednou za 76 let. \u201eJej\u00ed dr\u00e1ha prot\u00edn\u00e1 dr\u00e1hu Zem\u011b hned dvakr\u00e1t za rok. D\u00edky tomu m\u016f\u017eeme pozorovat dva meteorick\u00e9 roje poch\u00e1zej\u00edc\u00ed z t\u00e9to komety. Krom\u011b kv\u011btnov\u00fdch \u00e9ta Akvarid jsou to tak\u00e9 Orionidy v \u0159\u00edjnu,\u201c p\u0159ipom\u00edn\u00e1 Koten.<\/p>\n
Pro astronomy je p\u0159itom tento roj zaj\u00edmav\u00fd i z v\u011bdeck\u00e9ho hlediska. \u201eDynamick\u00e9 studie p\u0159itom ukazuj\u00ed na odli\u0161n\u00e9 st\u00e1\u0159\u00ed obou dvou roj\u016f. Pro astronomy je proto i zaj\u00edmav\u00e9 studovat vnit\u0159n\u00ed strukturu meteoroid\u016f, kter\u00e1 se zjevn\u011b u obou roj\u016f li\u0161\u00ed,\u201c dod\u00e1v\u00e1.<\/p>\n
Samotn\u00fd princip \u201epadaj\u00edc\u00edch hv\u011bzd\u201c je p\u0159itom pom\u011brn\u011b jednoduch\u00fd. Jde o drobn\u00e9 \u010d\u00e1stice, kter\u00e9 p\u0159i vstupu do zemsk\u00e9 atmosf\u00e9ry sho\u0159\u00ed a vytvo\u0159\u00ed kr\u00e1tk\u00fd sv\u011bteln\u00fd z\u00e1blesk. Dok\u00e1\u017eou nab\u00eddnout p\u016fsobivou pod\u00edvanou \u2013 zvl\u00e1\u0161\u0165 kdy\u017e se objev\u00ed jasn\u011bj\u0161\u00ed bolidy, tedy mimo\u0159\u00e1dn\u011b v\u00fdrazn\u00e9 meteory. A\u010dkoliv leto\u0161n\u00ed podm\u00ednky nejsou ide\u00e1ln\u00ed, z\u00e1\u017eitek z no\u010dn\u00ed oblohy to nevylu\u010duje. Sta\u010d\u00ed si naj\u00edt tmav\u00e9 m\u00edsto, pohodln\u011b se usadit nebo si lehnout, nechat o\u010di p\u0159ivyknout tm\u011b a vydr\u017eet. Trp\u011blivost je toti\u017e p\u0159i sledov\u00e1n\u00ed meteor\u016f t\u00edm nejd\u016fle\u017eit\u011bj\u0161\u00edm.<\/p>\n
VIDEO: Lidi pr\u016fzkum vesm\u00edru nezaj\u00edm\u00e1, proto je slab\u00e1 i ve\u0159ejn\u00e1 podpora, \u0159\u00edk\u00e1 Jan \u0160ifner z Planet\u00e1ria a hv\u011bzd\u00e1rny hl. m. Prahy. <\/p>\n
Zdroje: \u010cesk\u00e1 astronomick\u00e1 spole\u010dnost<\/a>, Dark Sky Beskydy<\/a>, NASA<\/a>, Space<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Leto\u0161n\u00ed maximum roje p\u0159ipad\u00e1 pr\u00e1v\u011b na tyto dny, konkr\u00e9tn\u011b na noc z \u00fater\u00fd na st\u0159edu. Pro pozorovatele v…\n","protected":false},"author":2,"featured_media":76603,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[13744,74,73,78,75,77,76,1540],"class_list":{"0":"post-76602","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-veda-a-technika","8":"tag-meteor","9":"tag-science","10":"tag-science-technology","11":"tag-technika","12":"tag-technology","13":"tag-veda","14":"tag-veda-a-technika","15":"tag-vesmir"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@cz\/116523050247145376","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/76602","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/comments?post=76602"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/76602\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/76603"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=76602"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=76602"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=76602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}