Incremental Release 2!

We are pleased to announce that photometric redshifts for PDR2 are now available to the public.  Please go to the dedicated page for details.  We also would like to to draw your attention to two new issues, one of which is a major issue in the photometric zero-point of NB387.  Please refer to the Known Problems page.

IMPORTANT: HSC source names

Recently a potential confusion with sources from the Hubble Source Catalog (which is also HSC) was pointed out by the IAU Working Group Designations.  Please name sources from the Hyper Suprime-Cam Survey as ‘HSC’.

Public Data Release 2

Welcome to the Hyper Suprime-Cam Subaru Strategic Program Data Release Site!

The second public release of HSC-SSP occurred on 30 May 2019.  The release includes over 300 square degrees of deep multi-color data served through dedicated databases and user interfaces.  The figures below shows the area covered in this release and the table gives an overview of the data in the three survey layers.  Refer to our survey website for details of the survey design.

In addition to the main data, we now make the detailed shape measurements from the S16A internal data release, which is a larger data set than Public Data Release 1 (PDR1) and covers about 160 square degrees, available to the community.  For details of all the data products in PDR2, refer to the PDR2 paper.

Approximate exposure time, seeing, 5σ depth for point sources, and saturation magnitudes (also for point sources) for each filter and survey layer, averaged over the entire survey area included in this release. The target exposure times and expected depths (i.e., survey goals) are also shown for reference in the bottom half of the table.

If you use the HSC data in your publication, please acknowledge us. Please note that only the processed HSC data are available on this site.  The raw data can be retrieved from SMOKA.   The previous release site is still available.  Follow the link below.


Here is a list of technical papers for your reference.  Please reference relevant papers in your publications.  PASJ special issue for HSC-SSP has been published and many of the papers here are included in that issue.

Raw Data

Raw data will be made available at STARS and SMOKA.  STARS release will occur on May 31st.  SMOKA release will follow in the next few working days.


Feel free to contact us with any questions, requests, and bug reports at  Also, check out the FAQ page.

The Collaboration and Supporting Agencies

The Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) is led by the astronomical communities of Japan and Taiwan, and Princeton University.  The instrumentation and software were developed by the National Astronomical Observatory of Japan (NAOJ), the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), the University of Tokyo, the High Energy Accelerator Research Organization (KEK), the Academia Sinica Institute for Astronomy and Astrophysics in Taiwan (ASIAA), and Princeton University.  The survey was made possible by funding contributed by the Ministry of Education, Culture, Sports, Science and Technology (MEXT), the Japan Society for the Promotion of Science (JSPS),  (Japan Science and Technology Agency (JST),  the Toray Science Foundation, NAOJ, Kavli IPMU, KEK, ASIAA,  and Princeton University.

Release History

Incremental Data Release 2
31 January 2020 (photometric redshifts)
Incremental Data Release 1
29 August 2019 (revised bright star masks, weak-lensing data products)
Public Data Release 2
30 May 2019
Incremental Data Release 2 21 November 2017 (Emission-line object catalog, Weak-lensing simulation data, multi-band SXDS catalog, PSF picker, and postage-stamp retriever)
Incremental Data Release 1 5 June 2017 (photo-z’s for the Wide layer and SSP+UH COSMOS data)
Public Data Release 1 28 Feb. 2017