{"id":2294,"date":"2009-04-24T22:18:21","date_gmt":"2009-04-24T20:18:21","guid":{"rendered":"https:\/\/new.ashk.cz\/?p=2294"},"modified":"2021-03-09T22:25:44","modified_gmt":"2021-03-09T21:25:44","slug":"prvni-pozorovani-pomoci-sestavy-eq6-biometar-28-80-ccd-st5c","status":"publish","type":"post","link":"https:\/\/www.ashk.cz\/?p=2294","title":{"rendered":"Prvn\u00ed pozorov\u00e1n\u00ed pomoc\u00ed sestavy EQ6 + Biometar 2,8\/80 + CCD ST5C"},"content":{"rendered":"<p>Po prvotn\u00edm o\u017eiven\u00ed mont\u00e1\u017ee EQ6 prob\u011bhlo n\u011bkolik test\u016f, kter\u00e9 postupn\u011b vedly k nalezen\u00ed optim\u00e1ln\u00ed pozorovac\u00ed sestavy. Na po\u010d\u00e1tku cesty bylo n\u011bkolik skute\u010dnost\u00ed p\u0159edur\u010duj\u00edc\u00edch v\u00fdvoj. Hv\u011bzd\u00e1rna HPHK laskav\u011b zap\u016fj\u010dila starou CCD kameru ST5C se sadou standardn\u00edch VRI filtr\u016f, kter\u00e1 bez v\u011bt\u0161\u00edho u\u017eitku tr\u00e1vila \u010das v \u0161upl\u00edku a ji\u017e jen marn\u011b vzpom\u00ednala na svoji sl\u00e1vu, kdy byla po\u010d\u00e1tkem tis\u00edcilet\u00ed hojn\u011b vyu\u017e\u00edv\u00e1na v hlavn\u00ed kopuli k fotometrii prom\u011bnn\u00fdch hv\u011bzd a po\u0159izov\u00e1n\u00ed p\u011bkn\u00fdch obr\u00e1zk\u016f pro popularizaci astronomie. Vzhledem k rozm\u011bru CCD chipu 3,2 x 2,4 mm a p\u0159edpokladu, \u017ee bude sestava pravideln\u011b rozeb\u00edr\u00e1na a sestavov\u00e1na, bylo nutn\u00e9 vybrat objektiv s vhodnou ohniskovou vzd\u00e1lenost\u00ed, aby se dos\u00e1hlo pom\u011brn\u011b velk\u00e9ho zorn\u00e9ho pole pro snadn\u011bj\u0161\u00ed orientaci a slad\u011bn\u00ed zorn\u00fdch pol\u00ed vyhled\u00e1vac\u00edho dalekohledu a objektivu. Dal\u0161\u00edm v\u00fdznamn\u00fdm d\u016fvodem pro volbu v\u011bt\u0161\u00edho zorn\u00e9ho pole byla eliminace periodick\u00e9 chyby a zmen\u0161en\u00ed driftu hv\u011bzdn\u00e9ho pole p\u0159i jednoduch\u00e9m ustaven\u00ed mont\u00e1\u017ee.<!--more--><\/p>\n<figure id=\"attachment_2295\" aria-describedby=\"caption-attachment-2295\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/200904241005_20090419-test-sestavy-EQ6-Biometar-80mm-ST5C-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2295\" src=\"https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/200904241005_20090419-test-sestavy-EQ6-Biometar-80mm-ST5C-2-225x300.jpg\" alt=\"Prvn\u00ed pozorov\u00e1n\u00ed pomoc\u00ed sestavy EQ6 + Biometar 2,8\/80 + CCD ST5C. Foto: Martin Lehk\u00fd.\" width=\"700\" height=\"933\" srcset=\"https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/200904241005_20090419-test-sestavy-EQ6-Biometar-80mm-ST5C-2-225x300.jpg 225w, https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/200904241005_20090419-test-sestavy-EQ6-Biometar-80mm-ST5C-2-600x800.jpg 600w, https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/200904241005_20090419-test-sestavy-EQ6-Biometar-80mm-ST5C-2-750x1000.jpg 750w, https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/200904241005_20090419-test-sestavy-EQ6-Biometar-80mm-ST5C-2.jpg 768w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><figcaption id=\"caption-attachment-2295\" class=\"wp-caption-text\">Prvn\u00ed pozorov\u00e1n\u00ed pomoc\u00ed sestavy EQ6 + Biometar 2,8\/80 + CCD ST5C. Foto: Martin Lehk\u00fd.<\/figcaption><\/figure>\n<p>Ve v\u00fdsledku se osv\u011bd\u010dila sestava EQ6 (ovl\u00e1dan\u00e1 p\u0159es po\u010d\u00edta\u010d a software Cartes du Ciel) + teleobjektiv Zeiss Biometar 2,8\/80 (z\u00e1kladn\u00ed objektiv fotoapar\u00e1tu Pentacon Six TL) + CCD ST5 C (VRI), kter\u00e1 prod\u011blala k\u0159est ve dvou noc\u00edch, 19. a 21. dubna 2009. C\u00edlem se staly dv\u011b prom\u011bnn\u00e9 z\u00e1krytov\u00e9 hv\u011bzdy. CI CVn byla sn\u00edm\u00e1na p\u0159es R filtr 60 s expozic\u00ed, hv\u011bzda s jasnost\u00ed kolem 9,6 mag. m\u011bla sign\u00e1l asi 2100 ADU nad pozad\u00edm a p\u0159esnost fotometrie se pohybovala kolem 0,03 a\u017e 0,04 mag. V948 Her byla sn\u00edm\u00e1na p\u0159es R filtr 120s expozic\u00ed, hv\u011bzda s jasnost\u00ed kolem 9,2 mag. m\u011bla sign\u00e1l asi 4200 ADU nad pozad\u00edm a p\u0159esnost fotometrie se pohybovala kolem 0,01 a\u017e 0,02 mag. Vzhledem k pou\u017eit\u00e9mu ohnisku vych\u00e1z\u00ed zorn\u00e9 pole na 137&#8242; x 103&#8242; (2,3 x 1,7 stupn\u011b), tak\u017ee sn\u00edmky jsou v pom\u011brn\u011b dobr\u00e9 kvalit\u011b. Periodick\u00e1 chyba se t\u00e9m\u011b\u0159 neprojevuje a p\u0159i b\u011b\u017en\u00e9m jednoduch\u00e9m ustaven\u00ed mont\u00e1\u017ee na Pol\u00e1rku se b\u011bhem pozorovac\u00edho runu kolem 6 hodin hv\u011bzda posunula p\u0159ibli\u017en\u011b o p\u016fl a\u017e t\u0159i\u010dtvrt\u011b zorn\u00e9ho pole, b\u011bhem noci tak sta\u010dilo ud\u011blat jen p\u00e1r drobn\u00fdch korekc\u00ed. Velikost jednoho pixlu vych\u00e1z\u00ed na 25,8&#8243;. Dosah se na sn\u00edmc\u00edch pohybuje kolem 12,5 ? 13,0 mag, ale fotometricky kvalitn\u011b m\u011b\u0159iteln\u00e9 jsou objekty cca do 10,5 mag.<\/p>\n<p>V\u00fd\u0161e popsan\u00e1 sestava se tedy osv\u011bd\u010dila a p\u0159\u00edstrojov\u00e9 vybaven\u00ed ASHK se t\u00edm rozrostlo o funk\u010dn\u00ed mobiln\u00ed za\u0159\u00edzen\u00ed pro CCD fotometrii prom\u011bnn\u00fdch hv\u011bzd, m\u011b\u0159en\u00ed z\u00e1kryt\u016f hv\u011bzd planetkami, fotografov\u00e1n\u00ed komet a deep-sky objekt\u016f s \u0161irok\u00fdm okol\u00edm.<\/p>\n<figure id=\"attachment_2314\" aria-describedby=\"caption-attachment-2314\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/CICVn.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2314\" src=\"https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/CICVn-300x114.jpg\" alt=\"CI CVn - pozorov\u00e1n\u00ed. Foto: Martin Lehk\u00fd.\" width=\"700\" height=\"265\" srcset=\"https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/CICVn-300x114.jpg 300w, https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/CICVn-1024x388.jpg 1024w, https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/CICVn-600x227.jpg 600w, https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/CICVn-1000x379.jpg 1000w, https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/CICVn-1200x455.jpg 1200w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><figcaption id=\"caption-attachment-2314\" class=\"wp-caption-text\">CI CVn &#8211; pozorov\u00e1n\u00ed. Foto: Martin Lehk\u00fd.<\/figcaption><\/figure>\n<figure id=\"attachment_2315\" aria-describedby=\"caption-attachment-2315\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/V948Her.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2315\" src=\"https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/V948Her-300x114.jpg\" alt=\"V 948 Her - pozorov\u00e1n\u00ed. Foto: Martin Lehk\u00fd.\" width=\"700\" height=\"265\" srcset=\"https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/V948Her-300x114.jpg 300w, https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/V948Her-1024x388.jpg 1024w, https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/V948Her-600x227.jpg 600w, https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/V948Her-1000x379.jpg 1000w, https:\/\/www.ashk.cz\/wp-content\/uploads\/2021\/03\/V948Her-1200x455.jpg 1200w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><figcaption id=\"caption-attachment-2315\" class=\"wp-caption-text\">V 948 Her &#8211; pozorov\u00e1n\u00ed. Foto: Martin Lehk\u00fd.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Po prvotn\u00edm o\u017eiven\u00ed mont\u00e1\u017ee EQ6 prob\u011bhlo n\u011bkolik test\u016f, kter\u00e9 postupn\u011b vedly k nalezen\u00ed optim\u00e1ln\u00ed pozorovac\u00ed sestavy. Na po\u010d\u00e1tku cesty bylo n\u011bkolik skute\u010dnost\u00ed p\u0159edur\u010duj\u00edc\u00edch v\u00fdvoj. Hv\u011bzd\u00e1rna HPHK laskav\u011b zap\u016fj\u010dila starou CCD kameru ST5C se sadou standardn\u00edch VRI filtr\u016f, kter\u00e1 bez v\u011bt\u0161\u00edho u\u017eitku tr\u00e1vila \u010das v \u0161upl\u00edku a ji\u017e jen marn\u011b vzpom\u00ednala na svoji sl\u00e1vu, kdy byla [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2313,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-2294","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pozorovani"],"_links":{"self":[{"href":"https:\/\/www.ashk.cz\/index.php?rest_route=\/wp\/v2\/posts\/2294","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ashk.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ashk.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ashk.cz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ashk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2294"}],"version-history":[{"count":1,"href":"https:\/\/www.ashk.cz\/index.php?rest_route=\/wp\/v2\/posts\/2294\/revisions"}],"predecessor-version":[{"id":2316,"href":"https:\/\/www.ashk.cz\/index.php?rest_route=\/wp\/v2\/posts\/2294\/revisions\/2316"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ashk.cz\/index.php?rest_route=\/wp\/v2\/media\/2313"}],"wp:attachment":[{"href":"https:\/\/www.ashk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2294"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ashk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2294"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ashk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}