Hiroaki AiharaRobert ArmstrongSteven BickertonJames BoschJean CouponHisanori FurusawaYusuke HayashiHiroyuki IkedaYukiko KamataHiroshi KarojiSatoshi KawanomotoMichitaro KoikeYutaka KomiyamaDustin LangRobert H. LuptonSogo MineoHironao MiyatakeSatoshi MiyazakiTomoki MorokumaYoshiyuki ObuchiYukie OishiYuki OkuraPaul A. PriceTadafumi TakataManobu M. TanakaMasayuki TanakaYoko TanakaTomohisa UchidaFumihiro UraguchiYousuke UtsumiShiang Yu WangYoshihiko YamadaHitomi YamanoiNaoki YasudaNobuo ArimotoMasashi ChibaFrancois FinetHiroki FujimoriSeiji FujimotoJunko FurusawaTomotsugu GotoAndy GouldingJames E. GunnYuichi HarikaneTakashi HattoriMasao HayashiKrzysztof G. HelminiakRyo HiguchiChiaki HikagePaul T.P. HoBau Ching HsiehKuiyun HuangSong HuangMasatoshi ImanishiIkuru IwataAnton T. JaelaniHung Yu JianNobunari KashikawaNobuhiko KatayamaTakashi KojimaAkira KonnoShintaro KoshidaHaruka KusakabeAlexie LeauthaudChien Hsiu LeeLihwai LinYen Ting LinRachel MandelbaumYoshiki MatsuokaElinor MedezinskiShoken MiyamaRieko MomoseAnupreeta MoreSurhud MoreShiro MukaeRyoma MurataHitoshi MurayamaTohru NagaoFumiaki NakataMana NiidaHiroko NiikuraAtsushi J. NishizawaMasamune OguriNobuhiro OkabeYoshiaki OnoMasato OnoderaMasafusa OnoueMasami OuchiTae Soo PyoTakatoshi ShibuyaKazuhiro ShimasakuMelanie SimetJoshua SpeagleDavid N. SpergelMichael A. StraussYuma SugaharaNaoshi SugiyamaYasushi SutoNao SuzukiPhilip J. TaitHigh Energy Accelerator Research Organization, Institute of Particle and Nuclear PhysicsResearch Center for the Early UniverseAcademia Sinica, Institute of Astronomy and AstrophysicsHiroshima UniversityNational Institutes of Natural Sciences - National Astronomical Observatory of JapanUniversity of California, RiversideCarnegie Mellon UniversityNicolaus Copernicus Astronomical Center of the Polish Academy of SciencesUniversity of TokyoUniversity of California, BerkeleyUniversity of California, Santa CruzNational Taiwan Normal UniversityThe Graduate University for Advanced StudiesNational Tsing Hua UniversityNational Institutes of Natural SciencesUniversity of TorontoRikenKobe UniversityHarvard UniversityJet Propulsion Laboratory, California Institute of TechnologyTohoku UniversityRiken BNL Research CenterLawrence Berkeley National LaboratoryUniversité de GenèvePrinceton UniversityEhime UniversityNagoya UniversityMeisei Electric Co. Ltd.Orbital InsightFlatiron InstituteEast Asian Observatory2019-08-232019-08-232018-01-01Publications of the Astronomical Society of Japan. Vol.70, No.Special Issue 1 (2018)2053051X000462642-s2.0-85041210432https://repository.li.mahidol.ac.th/handle/20.500.14594/45753© The Author 2017. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved. The Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) is a three-layered imaging survey aimed at addressing some of the most important outstanding questions in astronomy today, including the nature of dark matter and dark energy. The survey has been awarded 300 nights of observing time at the Subaru Telescope, and it started in 2014 March. This paper presents the first public data release of HSC-SSP. This release includes data taken in the first 1.7yr of observations (61.5 nights), and each of the Wide, Deep, and UltraDeep layers covers about 108, 26, and 4 square degrees down to depths of i ∼ 26.4, ∼26.5, and ∼27.0mag, respectively (5a for point sources). All the layers are observed in five broad bands (grizy), and the Deep and UltraDeep layers are observed in narrow bands as well. We achieve an impressive image quality of 0".6 in the i band in the Wide layer. We show that we achieve 1%-2% point spread function (PSF) photometry (root mean square) both internally and externally (against Pan-STARRS1), and ∼10mas and 40 mas internal and external astrometric accuracy, respectively. Both the calibrated images and catalogs are made available to the community through dedicated user interfaces and database servers. In addition to the pipeline products, we also provide value-added products such as photometric redshifts and a collection of public spectroscopic redshifts. Detailed descriptions of all the data can be found online.Mahidol UniversityEarth and Planetary SciencesPhysics and AstronomyArticleSCOPUS10.1093/pasj/psx081