{"id":82,"date":"2021-07-26T00:00:00","date_gmt":"2021-07-25T22:00:00","guid":{"rendered":"https:\/\/hujer.net\/?p=82"},"modified":"2025-11-09T21:55:32","modified_gmt":"2025-11-09T20:55:32","slug":"letni-pozorovani-velkych-planet-26-7-2021","status":"publish","type":"post","link":"https:\/\/hujer.net\/?p=82","title":{"rendered":"Letn\u00ed pozorov\u00e1n\u00ed velk\u00fdch planet"},"content":{"rendered":"

\"\" <\/p>\n

Po\u010d\u00e1tkem leto\u0161n\u00edho l\u00e9ta nastalo na m\u00e9m obl\u00edben\u00e9m pozorovac\u00edm m\u00edst\u011b nedaleko Skuhrova n\u011bkolik noc\u00ed s velmi p\u0159\u00edzniv\u00fdm seeingem, a tak bylo mo\u017en\u00e9 pomoc\u00ed m\u00e9ho relativn\u011b mal\u00e9ho dalekohledu zaznamenat n\u011bkolik tranzit\u016f Galileov\u00fdch m\u011bs\u00edc\u016f p\u0159es Jupiter a zpracovat je do n\u011bkolika animac\u00ed.<\/p>\n

<\/p>\n

Pou\u017eit\u00e1 technika<\/h2>\n

\"\"<\/a><\/h2>\n

Dalekohled Celestron EdgeHD 9.25″ (prim\u00e1rn\u00ed zrcadlo 235 mm) se z\u00e1kladn\u00ed sv\u011btelnost\u00ed f\/10, tj. ohniskov\u00e1 vzd\u00e1lenost 2350 mm. Pro pozorov\u00e1n\u00ed planet je pot\u0159eba toto z\u00e1kladn\u00ed ohnisko prodlou\u017eit. K tomuto \u00fa\u010delu se pou\u017e\u00edv\u00e1 tzv. Barlow \u010do\u010dka. J\u00e1 vlastn\u00edm pom\u011brn\u011b kvalitn\u00ed modul\u00e1rn\u00ed 2″ Barlow ED \u010dlen, kter\u00fd v z\u00e1vislosti na vzd\u00e1lenosti \u010dipu kamery od \u010do\u010dky umo\u017e\u0148uje dos\u00e1hnout prodlou\u017een\u00ed 1,5\u00d7 a\u017e 2,5\u00d7. V m\u00e9 konfiguraci, kdy pou\u017e\u00edv\u00e1m \u0161upl\u00ed\u010dek pro rychlou v\u00fdm\u011bnu filtr\u016f a ADC (Atmospheric Dispersion Corrector) od firmy Omegon, je v\u00fdsledn\u00e9 prodlou\u017een\u00ed cca 2,1\u00d7 a ohniskov\u00e1 vzd\u00e1lenost 4900 mm, tj. sv\u011btelnost f\/21.<\/p>\n

Pro sn\u00edm\u00e1n\u00ed planet m\u00e1m dv\u011b planet\u00e1rn\u00ed kamery od firmy ZWO:
\nPrvn\u00ed je ASI178MC,<\/a> kter\u00e1 disponuje \u010dipem o velikosti 7,4\u00d75 mm s rozli\u0161en\u00edm 3096\u00d72080 a s velikost\u00ed pixelu 2,4 \u03bcm. Tato kamera d\u00edky sv\u00fdm vlastnostem umo\u017e\u0148uje za p\u0159\u00edzniv\u00fdch podm\u00ednek zachytit velmi jemn\u00e9 detaily na povrchu planety.<\/p>\n

Druhou je ASI224MC<\/a>, kter\u00e1 disponuje \u010dipem o velikosti 4,9\u00d73,7 mm s rozli\u0161en\u00edm 1304\u00d7976 a velikost\u00ed pixel\u016f 3,75 \u03bcm. Tato kamera sice neumo\u017e\u0148uje zachytit takov\u00e9 mno\u017estv\u00ed detail\u016f jako ASI178MC, ale na druhou stranu disponuje dvojn\u00e1sobnou sn\u00edmkovou frekvenc\u00ed, a tak i za hor\u0161\u00edch podm\u00ednek umo\u017en\u00ed z\u00edsk\u00e1n\u00ed pou\u017eiteln\u00fdch v\u00fdsledk\u016f.<\/p>\n

V\u00fd\u0161e uveden\u00fd dalekohled provozuji na m\u00e9 upraven\u00e9 EQ6 Pro OnStep<\/a> rovn\u00edkov\u00e9 mont\u00e1\u017ei, kter\u00e1 proti p\u016fvodn\u00ed Synscan m\u00e1 nyn\u00ed znateln\u011b lep\u0161\u00ed p\u0159esnost najet\u00ed. Planeta se i p\u0159i dlouh\u00e9m ohnisku t\u00e9m\u011b\u0159 v\u017edy objev\u00ed v zorn\u00e9m poli kamery.<\/p>\n

Pro celkov\u00e9 \u0159\u00edzen\u00ed a z\u00e1znam dat pak pou\u017e\u00edv\u00e1m ZWO ASiair Pro<\/strong><\/a> s extern\u00edm SSD diskem. Ovl\u00e1dan\u00ed pak prob\u00edh\u00e1 bezdr\u00e1tov\u011b promoc\u00ed lehk\u00e9ho tabletu.<\/p>\n

 <\/p>\n

27. \u010dervna \u2013 tranzit m\u011bs\u00edce Europa<\/h2>\n
Tranzit m\u011bs\u00edce\u00a0Europa<\/b>\u00a0p\u0159es\u00a0Jupiter<\/b> 27. 6. 2021 03:17 \u2013 04:31. <\/span>V\u0161imn\u011bte si, \u017ee v pr\u016fb\u011bhu animace m\u011bs\u00edc\u00a0Io<\/b> vstoup\u00ed do st\u00ednu Jupiteru \u2013 n\u00e1hle zmiz\u00ed. Dal\u0161\u00ed m\u011bs\u00edce jsou Callisto<\/b>\u00a0a\u00a0Ganymedes. <\/b>Animace je slo\u017eena z 31 samostatn\u00fdch sn\u00edmk\u016f, p\u0159i\u010dem\u017e ka\u017ed\u00fd je slo\u017een z cca 50 % nejlep\u0161\u00edch sn\u00edmk\u016f vybran\u00fdch v\u017edy ze 120sec videa. Pou\u017eita byla kamera ASI224MC.
\n<\/span><\/div>\n

\"\"<\/a><\/p>\n

Detailn\u00ed sn\u00edmky:<\/strong><\/p>\n

\"\"<\/a>
Jupiter 27. 6. 2021 04:07<\/figcaption><\/figure>\n

 <\/p>\n

\"\"<\/a>
Jupiter 27. 6. 2021 04:27<\/figcaption><\/figure>\n

 <\/p>\n

4. \u010dervence \u2013 druh\u00fd tranzit m\u011bs\u00edce Europa<\/h2>\n
Dal\u0161\u00ed tranzit m\u011bs\u00edce Europa p\u0159es Jupiter, tentokr\u00e1t i ze st\u00ednem, jsem pozoroval 4. 7. 2021 03:43 \u2013 04:37. Animace je slo\u017een\u00e1 z 20 samostatn\u00fdch sn\u00edmk\u016f. Dal\u0161\u00ed m\u011bs\u00edce\u00a0 jsou Ganymedes<\/strong> a Io<\/strong>. Dle v\u0161eho se jednalo o jedny z nejlep\u0161\u00edch pozorovac\u00edch podm\u00ednek, kter\u00e9 jsem za posledn\u00ed dva roky za\u017eil. Kamera byla op\u011bt ASI224MC.<\/span><\/div>\n
<\/div>\n
\"\"<\/a><\/div>\n
<\/div>\n

Detailn\u00ed sn\u00edmky:<\/strong><\/p>\n

\"\"<\/a>
Jupiter 4. 7. 2021 03:49<\/figcaption><\/figure>\n
\"\"<\/a>
Jupiter 4. 7. 2021 04:01<\/figcaption><\/figure>\n

 <\/p>\n

\"\"<\/a>
Jupiter 4. 7. 2021 04:33<\/figcaption><\/figure>\n

 <\/p>\n

5. \u010dervence \u2013 Rud\u00e1 skvrna a st\u00edn Io<\/h2>\n

5. \u010dervence jsem cht\u011bl sn\u00edmat dal\u0161\u00ed st\u00edn a tranzit, tentokr\u00e1t\u00a0 m\u011bs\u00edce Io. Nav\u00edc dle simulace se m\u011bl st\u00edn prom\u00edtat v bl\u00edzkosti Velk\u00e9 rud\u00e9 skvrny. \u010clov\u011bk m\u00edn\u00ed, ale po\u010das\u00ed m\u011bn\u00ed \ud83d\ude42 V okam\u017eiku, kdy to m\u011blo b\u00fdt zaj\u00edmav\u00e9, dorazila obla\u010dnost, a tak z cel\u00e9 animace z\u016fstal pouze jeden nep\u0159\u00edli\u0161 kvalitn\u00ed sn\u00edmek:<\/p>\n

\"\"<\/a>
Jupiter 5. 7.2021 3:50<\/figcaption><\/figure>\n

Na druhou stranu se mi je\u0161t\u011b p\u0159edt\u00edm poda\u0159ilo kamerou ASI178MC po\u0159\u00eddit trochu koukateln\u00fd sn\u00edmek Saturnu<\/strong>, kter\u00fd se z d\u016fvodu mal\u00e9 v\u00fd\u0161ky nad obzorem nyn\u00ed velmi obt\u00ed\u017en\u011b fot\u00ed.<\/p>\n

\"\"<\/a>
Saturrn 5. 7. 2021 2:43<\/figcaption><\/figure>\n

 <\/p>\n

11. \u010dervence \u2013 tranzit m\u011bs\u00edce Ganymedes<\/h2>\n

11. \u010dervence jsem v \u010dase 02:45 a\u017e 04:30 sn\u00edmal p\u0159echod m\u011bs\u00edce Ganymedes. D\u00edky sv\u00e9 velikosti se nejd\u0159\u00edve na povrchu jev\u00ed jako st\u00edn a postupn\u011b se sm\u011brem ke kraji rozz\u00e1\u0159\u00ed. Z lev\u00e9 strany se pak Jupiteru za\u010dne p\u0159ibli\u017eovat m\u011bs\u00edc Europa<\/strong>. kter\u00fd na posledn\u00edm sn\u00edmku animace za\u010dne na povrch Jupiteru vrhat sv\u016fj st\u00edn. Animace je slo\u017eena z 25 sn\u00edmk\u016f. Kamera byla ASI178MC. Podm\u00ednky se v pr\u016fb\u011bhu sn\u00edm\u00e1n\u00ed zna\u010dn\u011b m\u011bnily, foukal n\u00e1razov\u00fd v\u00edtr.<\/p>\n

\"\"<\/a><\/p>\n

Detailn\u00ed sn\u00edmky:<\/strong><\/p>\n

\"\"<\/a>
Jupiter 11. 7. 2021 03:21<\/figcaption><\/figure>\n

 <\/p>\n

\"\"<\/a>
Jupiter 11. 7. 2021 03:49<\/figcaption><\/figure>\n

 <\/p>\n

24. \u010dervence \u2013 marn\u00e9 \u010dek\u00e1n\u00ed na GRS<\/h2>\n

B\u011bhem \u00fapl\u0148kov\u00e9 noci jsem m\u011bl pl\u00e1nu zachytit animaci v\u00fdchodu Velk\u00e9 rud\u00e9 skvrny (GRS), ale op\u011bt cca 30 minut p\u0159ed o\u010dek\u00e1van\u00fdm v\u00fdchodem dorazila obla\u010dnost. Proto vznikla jen kr\u00e1tk\u00e1 animace z 8 sn\u00edmk\u016f po\u0159\u00edzen\u00fdch kamerou ASI178MC v \u010dase 02:34 \u2013 02:58:<\/p>\n

\"\"<\/a><\/p>\n

 <\/p>\n

Detailn\u00ed sn\u00edmky:<\/strong><\/p>\n

<\/div>\n
\"\"<\/a>
Jupiter 24. 7. 2021 02:05, Kamera ASI224MC<\/figcaption><\/figure>\n

 <\/p>\n

\"\"<\/a>
Jupiter 24. 7. 2021 02:44, Kamera ASi178MC<\/figcaption><\/figure>\n

Co z\u00e1v\u011brem?<\/h2>\n

Sezona velk\u00fdch planet letos je\u0161t\u011b nekon\u010d\u00ed. Opozice Jupiteru se Sluncem nast\u00e1v\u00e1 a\u017e 20. 8. v 1 h SE\u010c, t\u00e9ho\u017e dne v 7 h SE\u010c se Jupiter bude nach\u00e1zet v nejmen\u0161\u00ed vzd\u00e1lenosti od Zem\u011b (4,013 au). V t\u00e9 dob\u011b tak\u00e9 planeta dos\u00e1hne maxim\u00e1ln\u00ed jasnosti, a to \u22122,9 mag. Kulminovat bude okolo p\u016flnoci ve v\u00fd\u0161ce 26 \u00b0. Saturn se do opozice se Sluncem dost\u00e1v\u00e1 ji\u017e 2. 8. v 7 h SE\u010c a t\u00e9ho\u017e dne ve 12 h SE\u010c se bude nach\u00e1zet v nejmen\u0161\u00ed vzd\u00e1lenosti od Zem\u011b (8,935 au). Planeta v t\u00e9 dob\u011b vrchol\u00ed ve v\u00fd\u0161ce v\u00edce ne\u017e 21 \u00b0 nad ji\u017en\u00edm obzorem a dosahuje maxim\u00e1ln\u00ed jasnosti +0,2 mag. Velk\u00e1 poloosa prstence bude m\u00edt v dob\u011b opozice zd\u00e1nliv\u00fd rozm\u011br 21,1″, mal\u00e1 poloosa 6,7″.<\/p>\n

Tak snad je\u0161t\u011b n\u011bjak\u00e9 sn\u00edmky po\u0159\u00edd\u00edm.<\/p>\n

\u00a9 2021 Roman Hujer, KaL<\/p>\n","protected":false},"excerpt":{"rendered":"

Po\u010d\u00e1tkem leto\u0161n\u00edho l\u00e9ta nastalo na m\u00e9m obl\u00edben\u00e9m pozorovac\u00edm m\u00edst\u011b nedaleko Skuhrova n\u011bkolik noc\u00ed s velmi p\u0159\u00edzniv\u00fdm seeingem, a tak bylo mo\u017en\u00e9 pomoc\u00ed m\u00e9ho relativn\u011b mal\u00e9ho dalekohledu zaznamenat n\u011bkolik tranzit\u016f Galileov\u00fdch m\u011bs\u00edc\u016f p\u0159es Jupiter a zpracovat je do n\u011bkolika animac\u00ed.<\/p>\n","protected":false},"author":1,"featured_media":153,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,8],"tags":[],"class_list":["post-82","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomie","category-planety"],"_links":{"self":[{"href":"https:\/\/hujer.net\/index.php?rest_route=\/wp\/v2\/posts\/82","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hujer.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hujer.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hujer.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hujer.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=82"}],"version-history":[{"count":3,"href":"https:\/\/hujer.net\/index.php?rest_route=\/wp\/v2\/posts\/82\/revisions"}],"predecessor-version":[{"id":358,"href":"https:\/\/hujer.net\/index.php?rest_route=\/wp\/v2\/posts\/82\/revisions\/358"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hujer.net\/index.php?rest_route=\/wp\/v2\/media\/153"}],"wp:attachment":[{"href":"https:\/\/hujer.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=82"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hujer.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=82"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hujer.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=82"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}