Kayan kamara na dijital don Babban Taro na Nazarin Sino ya bar LLNL a shirye don haɗin kai.
Babban yarjejeniya: mafi girman ruwan tabarau don babbar kyamarar dijital.
Gilashin tabarau mai auna mita 1.57 a fadin kuma ana tsammanin shine mafi girman tabarau na gani mai inganci wanda aka taba kirkira ya isa SLAC Laboratory Accelerator Labour, babban mataki zuwa ga makomarta a ƙarshe a cikin kyamarar dijital da Babban Teburin Syaukar Hanyoyin Sadarwa ke amfani dashi (LSST).
Cikakken taron ruwan tabarau na kamara, gami da babban ruwan tabarau na L1 tare da ƙaramin ruwan tabarau L2 mai auna mitoci 1.2, an tsara shi ne ta Laboratory National Lawrence Lawmore (LLNL) kuma an gina shi sama da shekaru biyar ta Kwallon Sama da kuma dan kwangila Arizona Tantancewar Tsarin. Wani ruwan tabarau na uku, L3, santimita 72 a diamita, kuma za'a kawo shi zuwa SLAC a cikin wata ɗaya.
SLAC tana kula da zane, kirkira da kuma taron karshe na LSST $ 168 miliyan, 3,200-megapixel kyamarar dijital, wanda aka ce yanzu an kammala kashi 90 cikin ɗari kuma za'a kammala shi a farkon 2021.
"Nasarar da aka kirkira na wannan taron na gani na musamman wata shaida ce ga babbar kwarewar LLNL a duniya a manyan kimiyyan gani, wanda aka gina tsawon shekaru na kwarewa a gina manya-manyan kuma injunan laser a duniya," in ji Scot Olivier, wanda ya kasance shiga cikin aikin LSST na Lawrence Livermore fiye da shekaru goma.
A cewar LSST Corporation, kyamarar dijital a cikin LSST ita ce mafi girman kyamarar dijital da aka taɓa ginawa. Tsarin karshe zai auna mita 1.65 x 3 kuma yakai kilogram 2,800. Babbar buɗewa ce, mai faɗin fili mai gani da kyau wanda ke iya kallon haske daga kusa da ultraviolet zuwa kusa da infrared.
Lokacin haɗuwa, ruwan tabarau na L1 da L2 za su zauna a cikin tsarin gani a gaban jikin kyamara; L3 zai samar da taga ta shiga tashar cryostat ta kyamarar, mai dauke da jirgin saman sa da kayan lantarki.
Takamaiman bukatun mai da hankali
Da CCD kyamarar dijital zai yi rikodin hotunan da babban tsarin hangen nesa na hangen nesa, kanta a labari madubi ukuhada firamare mai mita 8.4, sakandare mai mita 3.4 da manyan madubai na mita 5. Hasken farko a LSST ana tsammani a cikin 2020, tare da cikakken ayyukan farawa a cikin 2022.
Designirƙirar kyamarar dijital da ke iya saduwa da burin ɗaukar hoto na LSST ya sa LLNL ta magance ƙalubale da yawa, a cewar ƙungiyar aikin. Tsarin mai ganowa na ƙarshe yana amfani da mosaic na 189 16-megapixel silicon detectors waɗanda aka shirya akan 21 "raft" don samar da jimlar 3.2 gigapixels ƙuduri.
Kyamarar za ta ɗauki ɗaukar hoto na dakika 15 a kowane sakan 20, tare da sake nuna na'urar hangen nesa kuma za ta daidaita cikin sakan biyar, yana buƙatar madaidaicin tsari da tsayayyen tsari. Wannan kuma yana haifar da ƙaramar lambar f, tare da mahimmin maida hankali kan kyamara.
Takaddun LSST suna nuna cewa bayanan na 15 na biyu shine sulhu don ba da damar gano maɓuɓɓugan rago da motsi. Bayyanan abubuwa masu tsayi zai rage yawan karatun kyamara da sake sanya hangen nesa, ba da damar daukar hoto mai zurfi, amma abubuwan da ke saurin tafiya da kusa da abubuwan Duniya za su motsa sosai yayin fallasawa. Kowane wuri a sama ana zana shi ne tare da bayyanawa na biyu na 15 a jere, don ƙin yarda da hasken rana a kan CCDs.
Justin Wolfe na LLNL ya ce, "Duk lokacin da kuka gudanar da aiki a karon farko, tabbas za a sami kalubale, kuma samar da tabarau na LSST L1 ba shi da bambanci." “Kuna aiki da gilashin gilashi sama da kafa biyar a kauri sai inci hudu kawai. Duk wani ɓarna, damuwa ko haɗari na iya haifar da lalacewar tabarau. Tabarau aikin gwaninta ne kuma dukkanmu muna alfahari da shi. ”
Post lokaci: Oct-31-2019