Qalabka fiidiyowga dijitaalka ah ee Teleskop-ka Weyn ee 'Synoptic Survey Telescope' ayaa ka tagaya LLNL oo diyaar u ah is-dhexgalka.
Heshiis weyn: muraayadaha ugu weyn ee kamaradda ugu weyn ee dijital ah.
Muraayad dhererkeedu dhan yahay 1.57 mitir oo loo malaynayo inay tahay muraayada indhaha ee waxqabadka sare leh ee abid la farsameeyay ayaa timid SLAC Sheybaarka Dardargelinta Qaranka, waa talaabo weyn oo loo qaaday halka ugu dambeysa ee ay ku socoto kamarad dijital ah oo ay adeegsato Telescope-ka Weyn ee Sayniska Weyn (LSST).
Shirka muraayadaha indhaha oo buuxa, oo ay ku jiraan muraayadaha waaweyn ee L1 oo ay weheliyaan muraayad yar oo yar yar oo L2 ah oo cabbirkeedu yahay mitirka 1.2, ayaa waxaa qaabeeyay Lawrence Livermore Laboratory (LLNL) oo la dhisay in ka badan shan sano by Kubadda Cirka iyo qandaraasle hoose Nidaamka indhaha ee Arizona. Muraayad saddexaad, L3, 72 sintimitir oo dhexroor ah, ayaa sidoo kale loo geyn doonaa SLAC bil gudaheed.
SLAC waxay maareyneysaa guud ahaan nashqadeynta, been abuurka iyo isku imaatinka ugu dambeeya ee LSST $ 168 milyan, 3,200-megapixel kaamiro dijitaal ah, oo la sheegay in hada 90 boqolkiiba la dhameystiray ayna tahay in la dhameystiro horaanta 2021.
"Guusha laga gaadhay been abuurka kulankan muraayadaha indhaha ah waxay markhaati u tahay LLNL oo khibrad caalami ah ku leh laydhka waaweyn, oo lagu dhisay tobanaan sano oo waayo-aragnimo ah oo lagu dhisayay nidaamyada leysarka adduunka ugu weyn uguna awoodda badan," ayuu yiri Scot Olivier, oo horay u ahaa ku lug lahaa mashruuca LSST ee Lawrence Livermore in ka badan toban sano.
Sida laga soo xigtay Shirkadda LSST, kaamirada dijital ah ee ku jirta LSST waa kamaraddii ugu ballaadhnayd ee abid la dhiso. Qaab dhismeedka ugu dambeeya wuxuu cabirayaa 1.65 x 3 mitir culeyskiisuna waa 2,800 kg. Waa furitaan ballaadhan, sawir qaade ballaadhan oo awood u leh inuu iftiinka ka daawado ultraviolet u dhow iyo infrared u dhow.
Markii la ururiyo, muraayadaha indhaha L1 iyo L2 waxay fadhiisan doonaan qaab dhismeedka muuqaalka ee hore ee kamaradda jirka; L3 ayaa sameyn doonta daaqada laga soo galo cryostat-ka kaamerada, oo ay ku jirto diyaaradeeda diirada iyo elektiroonigga la xiriira.
Xaqiijinta shuruudaha diiradda
Ku Kaamirada dijital ah ee CCD wuxuu duubi doonaa sawirro ay arkeen nidaamka muraayadaha indha-indheynta, laftiisa a naqshad saddex muraayad ahisku darka 8.4-mitir ee hordhaca ah, 3.4-mitir sare iyo 5-mitir jaamacadeed. Iftiinka koowaad ee LSST waxaa lafilayaa sanadka 2020, iyadoo howlaha buuxa ay bilaaban doonaan sanadka 2022.
Nakhshadeynta kamarad dijitaal ah oo awood u leh inay la kulanto himilooyinka himilooyinka sare ee LSST ayaa u horseeday LLNL inay la tacaasho caqabado dhowr ah, sida ay sheegeen kooxda mashruuca. Qaabka ugu dambeeya ee qalabka wax lagu baaro waxaa ka shaqeeya mosaic ah 189 16-megapixel silicon qalabka wax lagu baaro 21 "raaf" si loo bixiyo wadarta 3.2 gigapixels xal.
Kaamiradu waxay qaadan doontaa 15-ilbiriqsi 20-kii ilbiriqsi kasta, iyadoo telescope-ka dib loo hagaajinayo laguna dejinayo shan ilbidhiqsi gudahood, oo u baahan qaab-dhismeed aad u gaaban oo adag. Tani markeeda waxay tusineysaa lambar aad u yar oo f ah, oo ay weheliso diiradda saxda ah ee kamaradda.
Dukumiintiyada LSST waxay muujinayaan in soo-bandhigyada 15-ilbiriqsi ay yihiin tanaasul si loo oggolaado in la ogaado ilaha jilicsan iyo dhaqdhaqaaqa. Soo bandhigista dhaadheer waxay yareyn doontaa dusha sare ee akhriska kaamerada iyo dib u dhigista aaladda telescope, taasoo u oggolaaneysa sawir qoto dheer, laakiin walxaha dhaqso u dhaqaaqa iyo kuwa dhow ee Dunida ayaa si weyn u dhaqaaqaya inta lagu jiro soo-gaadhista. Bar kasta oo samada ku taal waa in lagu sawiraa laba jeer oo isku xigta 15 jeer oo labaad, si loo diido waxyeellooyinka shucaaca ee CCDs.
“Waqti kasta oo aad wax qabato markii ugu horeysay, waxaa hubaal ah inay jiri doonaan caqabado, soo saarista muraayadaha LSST L1 waxay cadeeyeen inaysan ka duwanaanayn,” ayuu yidhi Justin Wolfe oo ka tirsan LLNL. “Waxaad ku shaqeyneysaa gabal quraarad ka badan shan dhudhun oo dhexroor ah oo dhumucdiisuna tahay afar inji oo keliya. Wax isdaba marin kasta, naxdin ama shil kasta waxay sababi kartaa waxyeelo soo gaadha muraayadaha indhaha. Muraayaddu waa shaqo farsamo gacmeed, waana ku wada faraxsanahay dhammaanteen.
Waqtiga dhejinta: Oct-31-2019