{"id":2744,"date":"2019-01-27T13:00:16","date_gmt":"2019-01-27T11:00:16","guid":{"rendered":"http:\/\/www.astrobobo.net\/?p=2744"},"modified":"2020-04-14T08:22:17","modified_gmt":"2020-04-14T06:22:17","slug":"kako-napraviti-barndoor-montazu","status":"publish","type":"post","link":"https:\/\/www.astrobobo.net\/?p=2744","title":{"rendered":"Kako napraviti barndoor monta\u017eu"},"content":{"rendered":"\r\n<p>Naj\u010de\u0161\u0107e pitanje po\u010detnika u prakti\u010dnoj astronomiji je, uz odabir teleskopa, <em>&#8220;kako mogu fotografirati zvijezde&#8221;<\/em>. Teleskopi sa motoriziranim pra\u0107enjem gibanja nebeskog svoda su skupi te nerijetko izvor frustracija zbog njihove slo\u017eenosti. Fotografiranje kroz teleskop uz specijaliziranu opremu <a rel=\"noreferrer noopener\" aria-label=\"zahtjeva napredno znanje (opens in a new tab)\" href=\"http:\/\/www.astrobobo.net\/?p=2055\" target=\"_blank\">zahtjeva napredno znanje<\/a> da bi se dobili kvalitetni rezultati. Ipak, zvjezdano nebo mo\u017ee se fotografirati bez teleskopa, digitalnim fotoaparatom uz pomo\u0107 jednostavne monta\u017ee koju svatko mo\u017ee napraviti u ku\u0107noj radinosti. Takva monta\u017ea poznata je pod nazivom <strong>&#8220;barndoor&#8221;<\/strong> ili <strong>&#8220;scotch&#8221;<\/strong>  monta\u017ea koju je osmislio \u0161kot George Haig. U Hrvatskoj ju nazivamo <strong>&#8220;tangentna&#8221;<\/strong> jer njeno gibanje opisuje tangentu kru\u017enice, ali uglavnom se dr\u017eimo naziva <strong>barndoor<\/strong>. Komercijalne monta\u017ee ovakvog tipa (<a rel=\"noreferrer noopener\" aria-label=\"Sky-Watcher Star Adventurer (opens in a new tab)\" href=\"http:\/\/skywatcher.com\/product\/star-adventurer\/\" target=\"_blank\">Sky-Watcher Star Adventurer<\/a>, <a rel=\"noreferrer noopener\" aria-label=\"Astrotrac (opens in a new tab)\" href=\"https:\/\/www.astrotrac.com\/\" target=\"_blank\">Astrotrac<\/a>, <a rel=\"noreferrer noopener\" aria-label=\"Vixen Polarie (opens in a new tab)\" href=\"https:\/\/www.vixenoptics.com\/Vixen-Polarie-Star-Tracker-p\/35505.htm\" target=\"_blank\">Vixen Polarie<\/a> i druge) prodaju se za nekoliko stotina EUR dok barndoor mo\u017eete napraviti za manje od 100kn. Zgodna i ne preskupa monta\u017ea je Omegon MiniTrack LX2, ali ipak je gu\u0161t fotkati s ne\u010dim napravljenim vlastitim snagama.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" width=\"601\" height=\"900\" data-attachment-id=\"1207\" data-permalink=\"https:\/\/www.astrobobo.net\/?attachment_id=1207\" data-orig-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2014\/06\/barndoor.jpg\" data-orig-size=\"601,900\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;5.6&quot;,&quot;credit&quot;:&quot;Boris Stromar&quot;,&quot;camera&quot;:&quot;NIKON D600&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1403451568&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;29&quot;,&quot;iso&quot;:&quot;100&quot;,&quot;shutter_speed&quot;:&quot;0.00555555555556&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"barndoor\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2014\/06\/barndoor.jpg\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2014\/06\/barndoor.jpg\" alt=\"\" class=\"wp-image-1207\" srcset=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2014\/06\/barndoor.jpg 601w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2014\/06\/barndoor-133x200.jpg 133w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2014\/06\/barndoor-200x300.jpg 200w\" sizes=\"(max-width: 601px) 100vw, 601px\" \/><figcaption>Moja barndoor monta\u017ea<\/figcaption><\/figure><\/div>\r\n\r\n\r\n\r\n<p>Princip rada monta\u017ee je jednostavan \u2013 <strong>dvije drvene plo\u010de spojene su \u0161arkom<\/strong> \u010diju je os potrebno usmjeriti prema zvijezdi Sjevernja\u010di. Okretanjem vijka u smjeru suprotnom kazaljke na satu pomi\u010de se gornja plo\u010da na kojoj je smje\u0161ten fotoaparat i tako se prati gibanje zvijezda oko sjevernog nebeskog pola. Zvijezde na fotografiji ostaju to\u010dkice te je mogu\u0107e snimati fotografije ekspozicije 7 do 10 minuta, ovisno o \u017eari\u0161noj duljini objektiva kojim se snima. Me\u0111utim, ekspozicije 1-3 minute su sasvim dovoljne za kvalitetne astrofotografije.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" width=\"608\" height=\"417\" data-attachment-id=\"1209\" data-permalink=\"https:\/\/www.astrobobo.net\/?attachment_id=1209\" data-orig-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2014\/06\/barndoor-usporedba-animacija.gif\" data-orig-size=\"608,417\" 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;}\" data-image-title=\"barndoor-usporedba-animacija\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Ekspozicija od dvije minute sa i bez barndoor monta\u017ee. Maglica Sjeverna Amerika snimljena sa Sljemena.&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2014\/06\/barndoor-usporedba-animacija.gif\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2014\/06\/barndoor-usporedba-animacija.gif\" alt=\"\" class=\"wp-image-1209\"\/><figcaption>Ekspozicija od dvije minute sa i bez barndoor monta\u017ee. Maglica Sjeverna Amerika snimljena sa Sljemena. Nikon D5100 i 50 mm objektiv.<\/figcaption><\/figure><\/div>\r\n\r\n\r\n\r\n<p>Ovaj tip monta\u017ee je najjednostavniji za izraditi i predvi\u0111en je za upotrebu sa \u010dvrstim fotografskim trono\u0161cem. <strong>Potrebne su dvije fotografske glave<\/strong>  \u2013 barndoor monta\u017ea postavlja se na onu koja se nalazi <strong>na trono\u0161cu<\/strong>, a druga ide <strong>na gornji dio barndoor monta\u017ee<\/strong> te slu\u017ei za usmjeravanje fotoaparata prema zvijezdama.<\/p>\r\n\r\n\r\n\r\n<p><strong>Za izradu monta\u017ee potrebno je sljede\u0107e:<\/strong><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\"><li>2x drvene plo\u010de (\u0161perplo\u010de) dimenzija otprilike 10&#215;25 cm <\/li><li>1x \u0161arka s odgovaraju\u0107im vijcima s ravnom glavom <\/li><li>1x \u0161to du\u017ei M6 vijak (5-6 cm) sa slijepom maticom i T-maticom <\/li><li>1x M5 vijak sa maticom <\/li><li>\u0161iroke M5 i M6 podlo\u017ene plo\u010dice i matice <\/li><li>1x vijak s 3\/8&#8243; (colnim) navojem<a rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\" href=\"http:\/\/vijci.com.hr\/\" target=\"_blank\"><\/a> za fotografsku glavu (imaju ih <a rel=\"noreferrer noopener\" aria-label=\"Vijci Kranjec (opens in a new tab)\" href=\"http:\/\/vijci.com.hr\/\" target=\"_blank\">Vijci Kranjec<\/a>) <\/li><li>plasti\u010dna slamka za sok (crvena!) <\/li><li>gumica za doma\u0107instvo <\/li><li>1x \u010dvrsti jogurt od 500g \ud83d\ude42<\/li><\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" width=\"1000\" height=\"512\" data-attachment-id=\"2746\" data-permalink=\"https:\/\/www.astrobobo.net\/?attachment_id=2746\" data-orig-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_02-oznake.jpg\" data-orig-size=\"1000,512\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;8&quot;,&quot;credit&quot;:&quot;Boris Stromar&quot;,&quot;camera&quot;:&quot;NIKON D600&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1421869577&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;45&quot;,&quot;iso&quot;:&quot;400&quot;,&quot;shutter_speed&quot;:&quot;0.004&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"barndoor_02-oznake\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_02-oznake.jpg\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_02-oznake.jpg\" alt=\"\" class=\"wp-image-2746\" srcset=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_02-oznake.jpg 1000w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_02-oznake-300x154.jpg 300w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_02-oznake-550x282.jpg 550w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_02-oznake-768x393.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure><\/div>\r\n\r\n\r\n\r\n<p>Od alata treba vam samo <strong>bu\u0161ilica i odvija\u010di<\/strong> \u2013 ja sam se odlu\u010dio za vijke sa kri\u017enom glavom. Dvije drvene plo\u010de potrebno je spojiti \u0161arkom. Jednu plo\u010du treba probu\u0161iti po sredini <strong>na udaljenosti od to\u010dno 229 mm od sredi\u0161ta osovine \u0161arke<\/strong>. Sadr\u017eaj jogurta je dobar za kvalitetnu probavu, ali za barndoor je potreban njegov poklopac. Kroz sredinu pokopca treba progurati M6 vijak te ga u\u010dvrstiti maticom i podlo\u017enom plo\u010dicom. Poklopac jogurta slu\u017eiti \u0107e za precizno okretanje M6 vijka. Na to mjesto treba staviti M6 T-maticu kroz koju ide M6 vijak. Slijepa matica na vrhu vijka za\u0161tititi \u0107e gornju drvenu plo\u010du od o\u0161te\u0107enja. Poklopac sa vijkom treba neprekidno okretati jedan puni krug u jednoj minuti i tako \u0107e se posti\u0107i gibanje koje odgovara rotaciji zvijezda na nebu. Za preciznije okretanje, na poklopcu sam ucrtao deblje linije koje pokazuju intervale od 15 sekundi, a izme\u0111u njih tanje linije za intervale od 5 sekundi.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"724\" height=\"1024\" data-attachment-id=\"2745\" data-permalink=\"https:\/\/www.astrobobo.net\/?attachment_id=2745\" data-orig-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_03_web.jpg\" data-orig-size=\"849,1200\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;8&quot;,&quot;credit&quot;:&quot;Boris Stromar&quot;,&quot;camera&quot;:&quot;NIKON D600&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1421869925&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;70&quot;,&quot;iso&quot;:&quot;400&quot;,&quot;shutter_speed&quot;:&quot;0.004&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"barndoor_03_web\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Barndoor monta\u017ea&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_03_web-724x1024.jpg\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_03_web-724x1024.jpg\" alt=\"\" class=\"wp-image-2745\" srcset=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_03_web-724x1024.jpg 724w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_03_web-142x200.jpg 142w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_03_web-212x300.jpg 212w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_03_web-768x1086.jpg 768w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_03_web.jpg 849w\" sizes=\"(max-width: 724px) 100vw, 724px\" \/><figcaption>Barndoor monta\u017ea<\/figcaption><\/figure><\/div>\r\n\r\n\r\n\r\n<p>Na plo\u010di kroz koji ste provukli M6 vijak napravite jo\u0161 jednu rupu, bli\u017ee osovini \u0161arke, gdje \u0107e se nalaziti M5 vijak. Taj vijak koristiti \u0107e za u\u010dvr\u0161\u0107ivanje odvojive plo\u010dice fotografske glave stativa na monta\u017eu. Plo\u010dica na sebi mora imati rupu kroz koju treba pro\u0107i vijak. Kada se provu\u010de kroz plo\u010dicu fotostativa i drvenu plo\u010du, vijak treba u\u010dvrstiti maticom da \u010dvrsto dr\u017ei monta\u017eu na stativu. Ovaj korak po mogu\u0107nosti obavite kod ku\u0107e prije odlaska na fotografiranje zvijezda.<\/p>\r\n\r\n\r\n\r\n<p>Na drugoj (gornjoj) drvenoj plo\u010di\r\nprobu\u0161ite rupu za vijak 3\/8&#8243; navoja. Udaljenost od \u0161arke neka\r\nbude malo ve\u0107a od M5 vijka da im se glave ne bi sudarale. Rupa za\r\n3\/8&#8243; vijak neka bude u\u017ea od promjera vijka kako bi se navoj\r\nmogao na silu urezati u drvo. Pazite da vijak bude odgovaraju\u0107e\r\nduljine \u2013 dovoljno duga\u010dak da prihvati fotografsku glavu s druge\r\nstrane, ali dovoljno kratak da se glava mo\u017ee priljubiti uz povr\u0161inu\r\ndrvene plo\u010de. Ja sam koristio \u0161perplo\u010du debljine 12mm i 3\/8&#8243;\r\nvijak duljine 25mm. Rastezljiva gumica za doma\u0107instvo dr\u017eati \u0107e\r\ndvije daske zajedno da se ne rastvore tijekom transporta i\r\npostavljanja opreme.<\/p>\r\n\r\n\r\n\r\n<p>Snala\u017eljiviji samograditelji mo\u0107i \u0107e osmisliti verziju monta\u017ee koja koristi samo jednu glavu fotostativa &#8211; monta\u017ea se mo\u017ee napraviti na drvenoj konstrukciji pod kutem koji odgovara geografskoj \u0161irini mjesta fotografiranja \u010dime \u0107e biti paralelna sa zemljinom osi i usmjerena prema Sjevernja\u010di. Barndoor je mogu\u0107e i motorizirati &#8211; odgovaraju\u0107im elektromotorima mo\u017ee se eliminirati potreba za ru\u010dnim okretanjem vijka.  <\/p>\r\n\r\n\r\n\r\n<p>Prije po\u010detka fotografiranja <strong>osovinu \u0161arke treba pa\u017eljivo usmjeriti prema Sjevernja\u010di<\/strong>. Sjevernja\u010du je lako naciljati gledaju\u0107i kroz plasti\u010dnu slamku za sokove zalijepljenu paralelno sa \u0161arkom. Po potrebi osvijetlite slamku tako da Sjevernja\u010du namjestite to\u010dno u njenu sredinu. Crvena boja slamke pomo\u0107i \u0107e vam da ne izgubite no\u0107ni vid.<\/p>\r\n\r\n\r\n\r\n<p>Za po\u010detak preporu\u010dam ekspozicije od <strong>2 minute na ISO 1600<\/strong>. Objektiv zatvorite na f\/5.6 da zvijezde budu o\u0161tre do ruba. Po mogu\u0107nosti koristite digitalne refleksne fotoaparate (DSLR) jer nude bolju kvalitetu fotografija od kompaktnih digitalaca. Na prvim poku\u0161ajima objektiv neka bude \u017eari\u0161ne duljine <strong>do 50mm<\/strong>. Naravno, fotografije je potrebno snimati sa tamnog mjesta bez svjetlosnog one\u010di\u0161\u0107enja grada, ina\u010de vam niti najbolja oprema ne\u0107e pomo\u0107i da snimite Mlije\u010dni put i maglice. Uz ovakvu monta\u017eu i malo truda i vi \u0107ete mo\u0107i snimiti prekrasne vedute zvjezdanog neba!<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-gallery columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><a href=\"http:\/\/www.astrobobo.net\/?attachment_id=2147\"><img loading=\"lazy\" decoding=\"async\" width=\"922\" height=\"922\" data-attachment-id=\"2147\" data-permalink=\"https:\/\/www.astrobobo.net\/?attachment_id=2147\" data-orig-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2017\/05\/Tuttle-Giacobini-Kresak_6x3min-NOVO.jpg\" data-orig-size=\"922,922\" 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=\"Tuttle-Giacobini-Kresak_6x3min-NOVO\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Comet 41P\/Tuttle-Giacobini-Kres\u00e1k, 30.4.2017., wide field view.&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2017\/05\/Tuttle-Giacobini-Kresak_6x3min-NOVO.jpg\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2017\/05\/Tuttle-Giacobini-Kresak_6x3min-NOVO.jpg\" alt=\"\" data-id=\"2147\" data-link=\"http:\/\/www.astrobobo.net\/?attachment_id=2147\" class=\"wp-image-2147\" srcset=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2017\/05\/Tuttle-Giacobini-Kresak_6x3min-NOVO.jpg 922w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2017\/05\/Tuttle-Giacobini-Kresak_6x3min-NOVO-200x200.jpg 200w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2017\/05\/Tuttle-Giacobini-Kresak_6x3min-NOVO-300x300.jpg 300w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2017\/05\/Tuttle-Giacobini-Kresak_6x3min-NOVO-768x768.jpg 768w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2017\/05\/Tuttle-Giacobini-Kresak_6x3min-NOVO-180x180.jpg 180w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2017\/05\/Tuttle-Giacobini-Kresak_6x3min-NOVO-600x600.jpg 600w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2017\/05\/Tuttle-Giacobini-Kresak_6x3min-NOVO-660x660.jpg 660w\" sizes=\"(max-width: 922px) 100vw, 922px\" \/><\/a><figcaption>Comet 41P\/Tuttle-Giacobini-Kres\u00e1k, 30.4.2017., wide field view.<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"http:\/\/www.astrobobo.net\/?attachment_id=1389\"><img loading=\"lazy\" decoding=\"async\" width=\"639\" height=\"900\" data-attachment-id=\"1389\" data-permalink=\"https:\/\/www.astrobobo.net\/?attachment_id=1389\" data-orig-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/kocijas_better_7x2min_SPIKES_mala.jpg\" data-orig-size=\"639,900\" 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=\"kocijas_better_7x2min_SPIKES_mala\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Zvije\u017e\u0111e Ko\u010dija\u0161.&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/kocijas_better_7x2min_SPIKES_mala.jpg\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/kocijas_better_7x2min_SPIKES_mala.jpg\" alt=\"\" data-id=\"1389\" data-link=\"http:\/\/www.astrobobo.net\/?attachment_id=1389\" class=\"wp-image-1389\" srcset=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/kocijas_better_7x2min_SPIKES_mala.jpg 639w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/kocijas_better_7x2min_SPIKES_mala-142x200.jpg 142w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/kocijas_better_7x2min_SPIKES_mala-213x300.jpg 213w\" sizes=\"(max-width: 639px) 100vw, 639px\" \/><\/a><figcaption>Zvije\u017e\u0111e Ko\u010dija\u0161.<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"http:\/\/www.astrobobo.net\/?attachment_id=1385\"><img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"900\" data-attachment-id=\"1385\" data-permalink=\"https:\/\/www.astrobobo.net\/?attachment_id=1385\" data-orig-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Perzej_SVE_21x2min_obrada_FLAT.jpg\" data-orig-size=\"650,900\" 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=\"Perzej_SVE_21x2min_obrada_FLAT\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Zvije\u017e\u0111e Perzej.&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Perzej_SVE_21x2min_obrada_FLAT.jpg\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Perzej_SVE_21x2min_obrada_FLAT.jpg\" alt=\"\" data-id=\"1385\" data-link=\"http:\/\/www.astrobobo.net\/?attachment_id=1385\" class=\"wp-image-1385\" srcset=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Perzej_SVE_21x2min_obrada_FLAT.jpg 650w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Perzej_SVE_21x2min_obrada_FLAT-144x200.jpg 144w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Perzej_SVE_21x2min_obrada_FLAT-217x300.jpg 217w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><\/a><figcaption>Zvije\u017e\u0111e Perzej.<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"http:\/\/www.astrobobo.net\/?attachment_id=1367\"><img loading=\"lazy\" decoding=\"async\" width=\"677\" height=\"900\" data-attachment-id=\"1367\" data-permalink=\"https:\/\/www.astrobobo.net\/?attachment_id=1367\" data-orig-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Orion_SVE_layers.jpg\" data-orig-size=\"677,900\" 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=\"Orion_SVE_layers\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Zvije\u017e\u0111e Orion.&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Orion_SVE_layers.jpg\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Orion_SVE_layers.jpg\" alt=\"\" data-id=\"1367\" data-link=\"http:\/\/www.astrobobo.net\/?attachment_id=1367\" class=\"wp-image-1367\" srcset=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Orion_SVE_layers.jpg 677w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Orion_SVE_layers-150x200.jpg 150w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Orion_SVE_layers-226x300.jpg 226w\" sizes=\"(max-width: 677px) 100vw, 677px\" \/><\/a><figcaption>Zvije\u017e\u0111e Orion.<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"http:\/\/www.astrobobo.net\/?attachment_id=1314\"><img loading=\"lazy\" decoding=\"async\" width=\"854\" height=\"603\" data-attachment-id=\"1314\" data-permalink=\"https:\/\/www.astrobobo.net\/?attachment_id=1314\" data-orig-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Lovejoy_7x2min_sigma_clipping_DBE_obrada-copy-2-manja.jpg\" data-orig-size=\"854,603\" 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=\"Lovejoy_7x2min_sigma_clipping_DBE_obrada-copy-2-manja\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Komet Lovejoy, 7&amp;#215;2 min ekspozicije.&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Lovejoy_7x2min_sigma_clipping_DBE_obrada-copy-2-manja.jpg\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Lovejoy_7x2min_sigma_clipping_DBE_obrada-copy-2-manja.jpg\" alt=\"\" data-id=\"1314\" data-link=\"http:\/\/www.astrobobo.net\/?attachment_id=1314\" class=\"wp-image-1314\" srcset=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Lovejoy_7x2min_sigma_clipping_DBE_obrada-copy-2-manja.jpg 854w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Lovejoy_7x2min_sigma_clipping_DBE_obrada-copy-2-manja-283x200.jpg 283w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Lovejoy_7x2min_sigma_clipping_DBE_obrada-copy-2-manja-425x300.jpg 425w\" sizes=\"(max-width: 854px) 100vw, 854px\" \/><\/a><figcaption>Komet Lovejoy, 7&#215;2 min ekspozicije.<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"http:\/\/www.astrobobo.net\/?attachment_id=1213\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"681\" data-attachment-id=\"1213\" data-permalink=\"https:\/\/www.astrobobo.net\/?attachment_id=1213\" data-orig-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Cassiopeia.jpg\" data-orig-size=\"900,681\" 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;}\" data-image-title=\"Cassiopeia\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Kasiopeja&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Cassiopeia.jpg\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Cassiopeia.jpg\" alt=\"\" data-id=\"1213\" data-link=\"http:\/\/www.astrobobo.net\/?attachment_id=1213\" class=\"wp-image-1213\" srcset=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Cassiopeia.jpg 900w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Cassiopeia-264x200.jpg 264w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/Cassiopeia-396x300.jpg 396w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/a><figcaption>Kasiopeja<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"http:\/\/www.astrobobo.net\/?attachment_id=1204\"><img loading=\"lazy\" decoding=\"async\" width=\"627\" height=\"900\" data-attachment-id=\"1204\" data-permalink=\"https:\/\/www.astrobobo.net\/?attachment_id=1204\" data-orig-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/sve-mala.jpg\" data-orig-size=\"627,900\" 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;}\" data-image-title=\"sve-mala\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/sve-mala.jpg\" src=\"http:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/sve-mala.jpg\" alt=\"\" data-id=\"1204\" data-link=\"http:\/\/www.astrobobo.net\/?attachment_id=1204\" class=\"wp-image-1204\" srcset=\"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/sve-mala.jpg 627w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/sve-mala-139x200.jpg 139w, https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2009\/11\/sve-mala-209x300.jpg 209w\" sizes=\"(max-width: 627px) 100vw, 627px\" \/><\/a><\/figure><\/li><\/ul>\r\n","protected":false},"excerpt":{"rendered":"<p>Naj\u010de\u0161\u0107e pitanje po\u010detnika u prakti\u010dnoj astronomiji je, uz odabir teleskopa, &#8220;kako mogu fotografirati zvijezde&#8221;. Teleskopi sa motoriziranim pra\u0107enjem gibanja nebeskog svoda su skupi te nerijetko izvor frustracija zbog njihove slo\u017eenosti. Fotografiranje kroz teleskop uz specijaliziranu opremu zahtjeva napredno znanje da bi se dobili kvalitetni rezultati. Ipak, zvjezdano nebo mo\u017ee se fotografirati bez teleskopa, digitalnim fotoaparatom [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2745,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3,120],"tags":[88,69,180],"class_list":["post-2744","post","type-post","status-publish","format-gallery","has-post-thumbnail","hentry","category-astrofotografija","category-prakticna-astronomija","tag-astrofotografija","tag-barndoor","tag-samogradnja","post_format-post-format-gallery"],"acf":[],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/www.astrobobo.net\/wordpress\/wp-content\/uploads\/2019\/01\/barndoor_03_web.jpg","jetpack_sharing_enabled":true,"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/posts\/2744","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.astrobobo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2744"}],"version-history":[{"count":2,"href":"https:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/posts\/2744\/revisions"}],"predecessor-version":[{"id":2748,"href":"https:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/posts\/2744\/revisions\/2748"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.astrobobo.net\/index.php?rest_route=\/wp\/v2\/media\/2745"}],"wp:attachment":[{"href":"https:\/\/www.astrobobo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2744"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.astrobobo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2744"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.astrobobo.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}