{"id":262,"date":"2023-11-07T22:24:47","date_gmt":"2023-11-07T21:24:47","guid":{"rendered":"https:\/\/martin-in.space\/?p=262"},"modified":"2023-11-07T22:26:28","modified_gmt":"2023-11-07T21:26:28","slug":"severna-amerika-na-oblohe","status":"publish","type":"post","link":"https:\/\/martin-in.space\/index.php\/2023\/11\/07\/severna-amerika-na-oblohe\/","title":{"rendered":"Severn\u00e1 Amerika na oblohe"},"content":{"rendered":"\n

Niektor\u00e9 objekty hlbok\u00e9ho vesm\u00edru svojim tvarom pripominaj\u00fa r\u00f4zne veci alebo n\u00e1zvy oblast\u00ed, ktor\u00e9 pozn\u00e1me na Zemi. Napr\u00edklad geografick\u00e9 n\u00e1zvy. V tomto pr\u00edpade Severn\u00fa Ameriku a Kaliforniu. Obe s\u00fa to geograficky bl\u00edzke oblasti, Kalifornia je s\u00fa\u010das\u0165ou Severnej Ameriku. Na oblohe s\u00edce Kalifornia nie je s\u00fa\u010das\u0165ou Severnej Ameriky a ani dokonca sa nenach\u00e1dzaj\u00fa v rovnakom s\u00fahvezd\u00ed, ale s\u00fa to podobn\u00e9 objekty, emisn\u00e9 hmloviny. <\/p>\n\n\n

\"\"<\/figure>\n\n\n\n\n\n\n

P\u00f4vodne som mal v pl\u00e1ne foti\u0165 nie\u010do in\u00e9, ale z pl\u00e1nu vzi\u0161lo. A ke\u010f\u017ee som v zostave zabudovan\u00fd dualband filter, tak som nar\u00fdchlo pozrel \u010do by sa n\u00edm dalo foti\u0165. Vysoko nad hlavou kulimovala Severn\u00e1 Amerika a trochu vy\u0161\u0161ie na v\u00fdchodom sa nach\u00e1dzala Kalifornia. Prv\u00fa polovicu noci som venoval Severnej Amerike a druh\u00fa polovicu noci Kalifornii. Severnej Amerike som e\u0161te venoval \u010das\u0165 nasleduj\u00facej noci.<\/p>\n\n\n\n

NGC 7000 (Severn\u00e1 Amerika)<\/h1>\n\n\n\n

NGC 7000 svoj\u00edm tvarom pripom\u00edna kontinent Severn\u00fa Ameriku. Jasne rozozna\u0165 napr\u00edklad Mexick\u00fd z\u00e1liv. Hmlovina sa nach\u00e1dza v s\u00fahvezd\u00ed Labu\u0165 a bola objaven\u00e1, alebo sk\u00f4r pozorovan\u00e1 William Herschelom 24. okt\u00f3bra 1786. <\/p>\n\n\n\n

NGC 7000 je emisn\u00e1 hmlovina (HII regi\u00f3n), ktor\u00e1 \u017eiari v\u010faka ultrafialov\u00e9mu \u017eiareniu z ne\u010falekej hor\u00facej hviezdy. Svojou rozhlohou na oblohe sa vyrovn\u00e1 10 Mesiacom v splne. Jej plo\u0161n\u00e1 jasnos\u0165 je ale dos\u0165 n\u00edzka a preto na jej pozorovanie je nutn\u00e9 pou\u017ei\u0165 aspo\u0148 trieder, najlep\u0161ie s UHC filtrom, aby sa potla\u010dilo pozadie a vynikla samotn\u00e1 hmlovina.<\/p>\n\n\n\n

Fotografovanie<\/h2>\n\n\n\n

T\u00e1to hmlovina je kv\u00f4li svojej ve\u013ekosti vhodn\u00e1 pre \u0161irokouhl\u00fa astrofotografiu. Uplatnenie si tu n\u00e1jdu \u0161irokouhl\u00e9 objet\u00edvy a \u010falekohlady s men\u0161ou ohniskovou vzdialenos\u0165ou. Ja som zvolil Askar FMA180 Pro, \u010do je apochoromatick\u00fd astrograf s priemerom objekt\u00edvu 40 mm a ohniskovou vzdialnos\u0165ou 180 mm, v\u00fdsledkom \u010doho je clona f\/4.5. S kamerou ZWO ASI 533 MC Pro mi poskytne zorn\u00e9 pole cca 3,5×3,5 stup\u0148a. Takmer na cel\u00fa hmlovinu. A ke\u010f\u017ee je to oblak ionizovan\u00e9ho vod\u00edka, tak sa uplatn\u00ed dualband filter. <\/p>\n\n\n\n

V\u00fdsledn\u00e1 fotografia:<\/p>\n\n\n\n

\"\"
NGC 7000 (Severn\u00e1 Amerika)<\/figcaption><\/figure>\n\n\n\n

Hmlovina je s\u00fa\u010das\u0165ou v\u00e4\u010d\u0161ieho oblaku plynu, ktor\u00fd sa okrem NGC 7000 sklad\u00e1 aj z hmloviny IC 5070 (hmlovina Pelik\u00e1n). IC 5070, Pelik\u00e1na som fotil cez toto leto a v\u00fdsledok si mo\u017eno pozrie\u0165 v tomto \u010dl\u00e1nku: Hmlovina Pelik\u00e1n (IC 5070)<\/a>.<\/p>\n\n\n\n

Viac inform\u00e1ci\u00ed o sn\u00edmke: https:\/\/astrob.in\/0t2f29\/B\/<\/a>.<\/p>\n\n\n\n

NGC 1499 (Kalifornia)<\/h1>\n\n\n\n

Hmlovina NGC 1499 (Kalifornia) sa nach\u00e1dza v s\u00fahvezd\u00ed Perzeus. Je to takisto emisn\u00e1 hmlovina (oblak ionizovan\u00e9ho vod\u00edka). Svoj\u00edm tvarom pripom\u00edna pobre\u017eie \u0161t\u00e1tu Kalifornia v USA. Kvoli jej n\u00edzkej plo\u0161nej jasnosti je ju \u0165a\u017eko pozorova\u0165 vizu\u00e1lne. Vynikne iba fotagrafi\u00e1ch s \u00fazkopasmov\u00fdmi filtrami. Opa\u0165 je to vhodn\u00fd objekt pre \u0161irokuhl\u00fa astrofotografiu, ke\u010f\u017ee hmlovina je dlh\u00e1 2,5 stup\u0148a. Jej vzdialnos\u0165 je cca 1000 sveteln\u00fdch rokov od Zeme.<\/p>\n\n\n\n

Hmlovinu objavil v roku 1884 americk\u00fd astron\u00f3m E.E. Barnard<\/p>\n\n\n\n

Fotografovanie<\/h2>\n\n\n\n

Pre fotografovanie tejto hmloviny som pou\u017eil rovnak\u00e9 vybavenia ako pri NGC 7000 (Severn\u00e1 Amerika). Tak\u017ee v\u00fdsledok:<\/p>\n\n\n\n

\"\"
NGC 1499 (hmlovina Kalifornia)<\/figcaption><\/figure>\n\n\n\n

Op\u00e4\u0165, viac info o sn\u00edmke mo\u017eno n\u00e1js\u0165 na https:\/\/astrob.in\/i02non\/0\/<\/a>. <\/p>\n","protected":false},"excerpt":{"rendered":"

Niektor\u00e9 objekty hlbok\u00e9ho vesm\u00edru svojim tvarom pripominaj\u00fa r\u00f4zne veci alebo n\u00e1zvy oblast\u00ed, ktor\u00e9 pozn\u00e1me na Zemi. Napr\u00edklad geografick\u00e9 n\u00e1zvy. V tomto pr\u00edpade Severn\u00fa Ameriku a Kaliforniu. Obe s\u00fa to geograficky bl\u00edzke oblasti, Kalifornia je s\u00fa\u010das\u0165ou Severnej Ameriku. Na oblohe s\u00edce … Pokra\u010dova\u0165 v \u010d\u00edtan\u00ed →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":264,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,14],"tags":[22,23,25,24],"class_list":["post-262","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astrofoto","category-hmloviny","tag-astofoto","tag-hmlovina","tag-kalifornia","tag-severna-amerika"],"_links":{"self":[{"href":"https:\/\/martin-in.space\/index.php\/wp-json\/wp\/v2\/posts\/262","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/martin-in.space\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/martin-in.space\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/martin-in.space\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/martin-in.space\/index.php\/wp-json\/wp\/v2\/comments?post=262"}],"version-history":[{"count":5,"href":"https:\/\/martin-in.space\/index.php\/wp-json\/wp\/v2\/posts\/262\/revisions"}],"predecessor-version":[{"id":270,"href":"https:\/\/martin-in.space\/index.php\/wp-json\/wp\/v2\/posts\/262\/revisions\/270"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/martin-in.space\/index.php\/wp-json\/wp\/v2\/media\/264"}],"wp:attachment":[{"href":"https:\/\/martin-in.space\/index.php\/wp-json\/wp\/v2\/media?parent=262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/martin-in.space\/index.php\/wp-json\/wp\/v2\/categories?post=262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/martin-in.space\/index.php\/wp-json\/wp\/v2\/tags?post=262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}