Jak vlastn\u011b vypad\u00e1 galaxie Andromeda? Na \u00favodn\u00edm obr\u00e1zku je zachyceno, jak skute\u010dn\u011b vypad\u00e1 nejbli\u017e\u0161\u00ed velk\u00e1 sousedn\u00ed galaxie na\u0161\u00ed Ml\u00e9\u010dn\u00e9 dr\u00e1hy na sn\u00edmku po\u0159\u00edzen\u00e9m s dlouhou expozic\u00ed p\u0159es ru\u0161nou oblohu nad Zem\u00ed a digit\u00e1ln\u00edm fotoapar\u00e1tem, kter\u00fd do sn\u00edmku vn\u00e1\u0161\u00ed obvykl\u00e9 nedokonalosti. Sn\u00edmek je slo\u017een z 223 sn\u00edmk\u016f, z nich\u017e ka\u017ed\u00fd m\u00e1 expozici 300 sekund, po\u0159\u00edzen\u00fdch v roce 2019 ze zahradn\u00ed observato\u0159e v Portugalsku. Mezi zjevn\u00e9 nedostatky sn\u00edmku pat\u0159\u00ed jasn\u00e9 paraleln\u00ed stopy letadel, dlouh\u00e9 a souvisl\u00e9 stopy satelit\u016f, kr\u00e1tk\u00e9 pruhy kosmick\u00e9ho z\u00e1\u0159en\u00ed a vadn\u00e9 pixely. Tyto nedokonalosti nebyly ve skute\u010dnosti odstran\u011bny p\u0159\u00edmo pomoc\u00ed programu Photoshop, ale byly v\u00fdrazn\u011b redukov\u00e1ny pomoc\u00ed \u0159ady softwarov\u00fdch bal\u00ed\u010dk\u016f, mezi kter\u00e9 pat\u0159ily Astro Pixel Processor, DeepSkyStacker a PixInsight. V\u0161echna tato pr\u00e1ce nebyla provedena proto, abychom v\u00e1s oklamali digit\u00e1ln\u00ed fantazi\u00ed, kter\u00e1 m\u00e1 m\u00e1lo spole\u010dn\u00e9ho se skute\u010dn\u00fdm vzhledem galaxie Andromedy (M31), ale abychom minimalizovali pozemsk\u00e9 artefakty, kter\u00e9 s touto vzd\u00e1lenou galaxi\u00ed nemaj\u00ed nic spole\u010dn\u00e9ho, a tak l\u00e9pe ztv\u00e1rnili, jak M31 skute\u010dn\u011b vypad\u00e1. E-mailov\u00e1 adresa APOD pro zas\u00edl\u00e1n\u00ed sn\u00edmk\u016f se zm\u011bnila. Viz: APOD Submissions Hlavn\u00ed str\u00e1nka APOD na webu NASA se p\u0159esouv\u00e1: Z apod.nasa.gov na science.nasa.gov\/apod<\/p>\n
<\/p>\n
**Credit**: NASA<\/p>\n","protected":false},"excerpt":{"rendered":"
Jak vlastn\u011b vypad\u00e1 galaxie Andromeda? Na \u00favodn\u00edm obr\u00e1zku je zachyceno, jak skute\u010dn\u011b vypad\u00e1 nejbli\u017e\u0161\u00ed velk\u00e1 sousedn\u00ed galaxie na\u0161\u00ed Ml\u00e9\u010dn\u00e9 dr\u00e1hy na sn\u00edmku po\u0159\u00edzen\u00e9m s dlouhou expozic\u00ed p\u0159es ru\u0161nou oblohu nad […]<\/p>\n","protected":false},"author":1,"featured_media":4096,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4095","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\/4095","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=4095"}],"version-history":[{"count":0,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts\/4095\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media\/4096"}],"wp:attachment":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media?parent=4095"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/categories?post=4095"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/tags?post=4095"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}