{"id":2677,"date":"2018-09-04T06:33:36","date_gmt":"2018-09-04T04:33:36","guid":{"rendered":"http:\/\/www.astrobobo.net\/?p=2677"},"modified":"2023-07-12T08:48:18","modified_gmt":"2023-07-12T06:48:18","slug":"ring-nebula-kratkim-ekspozicijama","status":"publish","type":"post","link":"http:\/\/www.astrobobo.net\/?p=2677","title":{"rendered":"Ring Nebula kratkim ekspozicijama"},"content":{"rendered":"<p>Jednom prilikom u kolovozu kad sam poku\u0161ao snimiti Mars odlu\u010dio sam isprobati Messier 57, Ring nebulu. Mars je bio nisko i prili\u010dno kuhao, a M 57 vrlo visoko i seeing se \u010dinio dosta stabilan. ZWO ASI290MC ima sitne piksele, pa je bila prilika isprobati koliko detalja se mo\u017ee izvu\u0107i u primarnom fokusu 8&#8243; Celestron EdgeHD. Snimao sam iz centra Zagreba, odlu\u010dio sam se na ekspoziciju od 4&#8243;. Evo kako je izgledao single frame:<\/p>\n<p><a href=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/DSO_021437_f049_RGB_VNG.jpg\"><img fetchpriority=\"high\" decoding=\"async\" data-attachment-id=\"2678\" data-permalink=\"http:\/\/www.astrobobo.net\/?attachment_id=2678\" data-orig-file=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/DSO_021437_f049_RGB_VNG.jpg\" data-orig-size=\"1936,1096\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"DSO_021437_f049_RGB_VNG\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/DSO_021437_f049_RGB_VNG-1024x580.jpg\" class=\"aligncenter size-full wp-image-2678\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/DSO_021437_f049_RGB_VNG.jpg\" alt=\"\" width=\"1936\" height=\"1096\" srcset=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/DSO_021437_f049_RGB_VNG.jpg 1936w, http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/DSO_021437_f049_RGB_VNG-300x170.jpg 300w, http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/DSO_021437_f049_RGB_VNG-530x300.jpg 530w, http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/DSO_021437_f049_RGB_VNG-768x435.jpg 768w, http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/DSO_021437_f049_RGB_VNG-1024x580.jpg 1024w\" sizes=\"(max-width: 1936px) 100vw, 1936px\" \/><\/a><\/p>\n<p>Budu\u0107i da nisam radio korekcije pra\u0107enja, neke frameove sam morao izbaciti. Nije bilo lako pregledati 800-tinjak frameova&#8230;na kraju je selekciju pro\u0161lo 599, \u0161to je ukupno 40 minuta ekspozicije. Iako su pojedina\u010dni frameovi blijedi i \u0161umoviti, na tolikoj ukupnoj ekspoziciji je ipak signal prili\u010dno narastao, pa je rezultat sasvim zadovoljavaju\u0107i ako se uzme u obzir da je snimano iz Zagreba. Nazire se i obli\u017enja galaksija:<\/p>\n<p><a href=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/M57_599x4s_integration_fin-test.jpg\"><img decoding=\"async\" data-attachment-id=\"2679\" data-permalink=\"http:\/\/www.astrobobo.net\/?attachment_id=2679\" data-orig-file=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/M57_599x4s_integration_fin-test.jpg\" data-orig-size=\"1049,704\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"M57_599x4s_integration_fin-test\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/M57_599x4s_integration_fin-test-1024x687.jpg\" class=\"aligncenter size-full wp-image-2679\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/M57_599x4s_integration_fin-test.jpg\" alt=\"\" width=\"1049\" height=\"704\" srcset=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/M57_599x4s_integration_fin-test.jpg 1049w, http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/M57_599x4s_integration_fin-test-298x200.jpg 298w, http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/M57_599x4s_integration_fin-test-447x300.jpg 447w, http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/M57_599x4s_integration_fin-test-768x515.jpg 768w, http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/M57_599x4s_integration_fin-test-1024x687.jpg 1024w\" sizes=\"(max-width: 1049px) 100vw, 1049px\" \/><\/a><\/p>\n<p>Sljede\u0107i puta bi trebalo probati kra\u0107e ekspozicije s tamne lokacije, da se poku\u0161a zeznuti seeing kao na planetima, te mo\u017eda uz fokalni reduktor na ve\u0107im objektima.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jednom prilikom u kolovozu kad sam poku\u0161ao snimiti Mars odlu\u010dio sam isprobati Messier 57, Ring nebulu. Mars je bio nisko i prili\u010dno kuhao, a M 57 vrlo visoko i seeing se \u010dinio dosta stabilan. ZWO ASI290MC ima sitne piksele, pa je bila prilika isprobati koliko detalja se mo\u017ee izvu\u0107i u primarnom fokusu 8&#8243; Celestron EdgeHD. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2679,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[17],"tags":[178,88,177,94],"class_list":["post-2677","post","type-post","status-publish","format-gallery","has-post-thumbnail","hentry","category-razno","tag-asi290mc","tag-astrofotografija","tag-edgehd","tag-maglice","post_format-post-format-gallery"],"acf":[],"aioseo_notices":[],"jetpack_featured_media_url":"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2018\/09\/M57_599x4s_integration_fin-test.jpg","jetpack_sharing_enabled":true,"amp_enabled":true,"_links":{"self":[{"href":"http:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/posts\/2677","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.astrobobo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2677"}],"version-history":[{"count":2,"href":"http:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/posts\/2677\/revisions"}],"predecessor-version":[{"id":2682,"href":"http:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/posts\/2677\/revisions\/2682"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/media\/2679"}],"wp:attachment":[{"href":"http:\/\/www.astrobobo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2677"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.astrobobo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2677"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.astrobobo.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2677"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}