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| National Astronomical Observatory of Japan Computing Center | |
|---|---|
| Name | National Astronomical Observatory of Japan Computing Center |
| Established | 1980s |
| Location | Mitaka, Tokyo |
| Type | Research computing center |
| Parent | National Astronomical Observatory of Japan |
National Astronomical Observatory of Japan Computing Center is the high-performance computing and data management arm of the National Astronomical Observatory of Japan located in Mitaka, Tokyo. It supports observational programs at facilities such as Subaru Telescope, ALMA, and VERA while collaborating with institutions including University of Tokyo, RIKEN, and NAOJ Chile. The center integrates hardware, software, and archival services to serve projects from Hyper Suprime-Cam surveys to simulation efforts linked to KAGRA and Tama initiatives.
The Computing Center traces origins to expansion efforts in the 1980s linked with the founding of NAOJ and consolidation under research infrastructures influenced by policy from Ministry of Education, Culture, Sports, Science and Technology (Japan). Early milestones include provisioning for the Subaru Telescope era and integration with data from the Japan Aerospace Exploration Agency missions. During the 1990s and 2000s the center upgraded capabilities to support collaborations with European Southern Observatory, National Radio Astronomy Observatory, and CSIRO for projects tied to Atacama Large Millimeter Array development. In the 2010s, synergy with computational initiatives from High Energy Accelerator Research Organization and partnerships with Princeton University and University of Cambridge expanded its role in international surveys such as Sloan Digital Sky Survey-related cross-calibrations.
Physical assets include a high-performance computing cluster, data storage arrays, and network peering with international backbones connecting to ALMA Observatory, Subaru Telescope, and the Hawaii Space Center nodes. The center houses specialized hardware for pipeline processing used by instruments like Hyper Suprime-Cam, MOIRCS, and Suprime-Cam and hosts virtualized services aligned with standards from International Virtual Observatory Alliance and European Grid Infrastructure. Disaster-resistant design borrows models from facilities at NAOJ Mitaka and mirrors archival nodes akin to those maintained by Space Telescope Science Institute and National Optical Astronomy Observatory.
The center provides computational support for theoretical groups working with simulations influenced by efforts at Princeton Plasma Physics Laboratory and Los Alamos National Laboratory, and for observational teams processing data from ALMA, Subaru Telescope, and VERA. Core services include pipeline development for data reduction comparable to systems at European Southern Observatory and catalog generation consistent with standards set by SIMBAD and VizieR resources. It supports machine learning applications adopted from collaborations with RIKEN AIP, University of Tokyo Kavli Institute, and Max Planck Institute for Astronomy for projects ranging from transient detection akin to Large Synoptic Survey Telescope prototypes to spectral analysis used in Sloan Digital Sky Survey work.
Notable projects include computational support for the Subaru Strategic Program, data fusion with ALMA Science Archive, and joint analyses with the National Astronomical Observatory of Japan telescopes and international partners such as European Southern Observatory, National Radio Astronomy Observatory, and Korea Astronomy and Space Science Institute. Collaborative development of virtual observatory tools involves partnerships with International Virtual Observatory Alliance, Centre de Données astronomiques de Strasbourg, and Smithsonian Astrophysical Observatory. The center has participated in multi-messenger campaigns alongside KAGRA, LIGO, and Virgo for electromagnetic follow-up and coordinated simulations with groups at Princeton University and Caltech.
The Computing Center operates long-term archives for raw and processed data, implementing metadata schemas compatible with International Virtual Observatory Alliance protocols and cross-referencing with catalogs like SIMBAD and VizieR. Its storage strategy mirrors designs used by Space Telescope Science Institute and European Southern Observatory archives, including tape libraries and replicated disk caches to support projects such as Hyper Suprime-Cam and ALMA Science Archive. Data release policies are coordinated with partners including Subaru Telescope, ALMA, and academic consortia from University of Tokyo and NAOJ Chile, ensuring interoperability with services at NASA/IPAC and AstroGrid nodes.
The Center runs workshops and training programs for users from institutions like University of Tokyo, Kyoto University, and Hokkaido University on topics spanning pipeline development, high-performance computing, and data stewardship. Outreach activities include hackathons and summer schools co-organized with RIKEN, International Virtual Observatory Alliance, and the Japan Society for the Promotion of Science to teach reproducible research practices used in campaigns such as the Subaru Strategic Program. It also provides support for visitor programs tied to Mitaka facilities and public engagement coordinated with the National Museum of Nature and Science.
Administratively the Computing Center is a unit within National Astronomical Observatory of Japan governance and coordinates funding and strategic planning with agencies including Ministry of Education, Culture, Sports, Science and Technology (Japan) and funding bodies such as the Japan Society for the Promotion of Science. Leadership liaises with research groups at University of Tokyo, RIKEN, and international partners including European Southern Observatory and National Radio Astronomy Observatory to align technical roadmaps with science goals from projects like Subaru Telescope, ALMA, and KAGRA.