What Subaru Telescope does

Subaru Telescope is an 8.2-meter optical-infrared telescope located at the summit of Mauna Kea, Hawaii, at approximately 4,200 meters altitude. It is operated by the National Astronomical Observatory of Japan (NAOJ), which is part of Japan's National Institutes of Natural Sciences (NINS), and funded by the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) under the Large-Scale Academic Frontier Promotion Project. The telescope achieved first light in January 1999 and has since served as a shared-use research facility for the global astronomical community, with observation time allocated through a competitive peer-reviewed proposal process. Researchers can operate the telescope remotely from the Hilo base facility in Hawaii or from NAOJ's Mitaka campus in Tokyo.

The core instrument is built around a monolithic 8.2-meter primary mirror made of ultra-low thermal expansion (ULE) glass with 0.014 micrometer surface accuracy, and features four focal points hosting instruments such as the Hyper Suprime-Cam (HSC) wide-field imager, the Subaru Prime Focus Spectrograph (PFS), the SCExAO extreme adaptive optics system, and the ULTIMATE-Subaru wide-field infrared adaptive optics system. The Subaru 2 upgrade program, launched in fiscal year 2022, is delivering next-generation instruments targeting dark matter, dark energy, galaxy formation, multi-messenger astronomy, and exoplanet detection. Supporting offerings include a 3D Virtual Tour (built with Matterport), the Subaru Kids educational portal, the GALAXY CRUISE citizen science project, and the newer COIAS tool listed on the website.

The business model is non-commercial: Subaru Telescope does not sell observation time or data products on a market basis. Funding flows from MEXT and from international partnership contributions, with science access allocated on scientific merit rather than pricing. The customer base consists of professional astronomers and graduate students globally, with the general public reached through outreach channels. Operations have been subject to periodic disruption, including the 2019 Mauna Kea access road blockade, the 2020 COVID-19 suspension, a 2023 glycol leak, and a 2024 Hurricane Hone paint detachment incident.

Name

Subaru Telescope

Legal name

National Astronomical Observatory of Japan

Website

https://subarutelescope.org

Company type

Private

Founded year

1999

Operating status

Operating

Short description

Subaru Telescope is an 8.2-meter optical-infrared telescope on Mauna Kea, Hawaii, operated by Japan's NAOJ and funded by MEXT. It serves global astronomers, researchers, and students through a peer-reviewed shared-use observation program, with supporting public outreach and the Subaru 2 upgrade program.

Ownership category

akta.pro rank

Headquarters

HQ city

Hilo

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Infrastructure, Technology or R&D, Operations

Revenue model

1. Government Research Funding: Subaru Telescope is operated by the National Astronomical Observatory of Japan (NAOJ), which is part of the National Institutes of Natural Sciences (NINS), a Japanese national research institute. Operations are funded by the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) under the Large-Scale Academic Frontier Promotion Project.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Subaru Telescope is an 8.2-meter optical-infrared telescope facility at Mauna Kea, Hawaii, operated by the National Astronomical Observatory of Japan. It provides shared-use observation time to qualified international researchers through a competitive proposal program, supporting research on distant galaxies, exoplanets, dark matter, dark energy, and stellar populations. The facility also hosts public outreach and education offerings including a 3D virtual tour, the Subaru Kids education portal, and the GALAXY CRUISE citizen science project.

Product overview

Subaru Telescope is a world-class 8.2-meter optical-infrared telescope facility operated by the National Astronomical Observatory of Japan (NAOJ) from Mauna Kea, Hawaii. The facility offers direct telescope observation services for researchers and supports public engagement through educational platforms. The core Subaru Telescope instrument provides four focal positions for diverse observation capabilities. Supporting offerings include the 3D Virtual Tour for public outreach, the Subaru Kids educational platform for children, the GALAXY CRUISE citizen science project for public participation in galaxy classification, and the ongoing Subaru 2 upgrade program to enhance observational capabilities with new spectroscopic and infrared instruments.

Differentiator

Problem solved

Functional benefit

Brands

• Subaru Telescope Kids (すばるキッズ): Children's education portal featuring mascot character SUBBY, astronomy quizzes, downloadable crafts, and educational content about the telescope and astronomy.

Products and services

• Subaru Telescope (Main Facility) An 8.2-meter optical-infrared research telescope located at the summit of Mauna Kea in Hawaii, operated by NAOJ. Provides shared-use observation time to qualified international astronomers through a joint-use proposal program for research on distant galaxies, exoplanets, dark matter, dark energy, stellar populations, and solar system objects.
• Subaru Telescope 3D Virtual Tour An immersive 3D virtual exploration experience of the Subaru Telescope dome and facilities, accessible via web browser or VR goggles, with explanations and videos for major facility areas. Targets the general public and educational audiences as an outreach offering.
• Subaru Kids (すばるキッズ) A children-focused educational website featuring the mascot character SUBBY (スビー), offering astronomy quizzes, career introductions, downloadable paper crafts and coloring pages, and astronomy mini-lectures for elementary school students.
• GALAXY CRUISE A citizen science project where participants classify galaxy shapes from Subaru Telescope data, contributing to real astronomical research through gamified participation accessible via computer or tablet.
• Subaru 2 (すばる2) Upgrade Program A major upgrade project enhancing Subaru Telescope's capabilities through new instruments including the Prime Focus Spectrograph and ULTIMATE-Subaru wide-field adaptive optics, pursuing four scientific objectives: dark matter/energy exploration, galaxy formation, multi-messenger astronomy, and exoplanet detection.

Quantifiable outcome

• First light achieved in January 1999; numerous significant astronomical discoveries including distant galaxy identifications and exoplanet observations

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Thirty Meter Telescope (TMT) ProjectcoreStrategic or Co-development Partner · 1 January 2022Subaru Telescope and the NAOJ Hawaii Observatory support the Thirty Meter Telescope (TMT) international project. The observatory plays a role in developing human resources and preparing for the TMT era while continuing Subaru Telescope operations. The TMT aims to build an extremely large telescope at Mauna Kea or La Palma.
• NAOJ Subaru 2 International and Domestic CollaborationcoreStrategic or Co-development PartnerThe Subaru2 project involves multiple international and domestic partnerships. The Prime Focus Spectrograph (PFS) project is an international collaboration involving the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), the University of Tokyo, the University of Marseille, the Paris Observatory, the Max Planck Institute for Astronomy, and other institutions.
• Mauna Kea Observatory ConsortiumcoreStrategic or Co-development PartnerSubaru Telescope is part of the Mauna Kea observatory cluster, operating alongside CFHT (Canada-France-Hawaii Telescope), Keck Observatory, Gemini Observatory, JCMT, and other telescopes. The Mauna Kea observatories share infrastructure, coordinate on access and management, and collaborate on scientific programs.
• GALAXY CRUISE (NAOJ Citizen Science)minorStrategic or Co-development PartnerA citizen science initiative developed by NAOJ, inviting the general public to participate in galaxy classification research. Anyone with a computer or tablet can register and contribute as a citizen astronomer to galaxy morphological classification.
• Ministry of Education, Culture, Sports, Science and Technology (MEXT) JapancoreOthersSubaru Telescope operations and the Subaru2 project are supported by MEXT's Large-Scale Academic Frontier Promotion Project (大規模学術フロンティア促進事業), which provides funding for the international joint research promotion using the large optical-infrared telescope.

Scale indicators4 records

Recent moves7 records

Expansion highlights10 records

Direct peers

• United Kingdom Infrared Telescope (UKIRT): A 3.8-meter infrared telescope on Mauna Kea, one of the largest infrared-only facilities in the world. UKIRT operates on the same summit, serving a similar infrared astronomy user community with comparable observation-time allocation mechanics.
• Canada-France-Hawaii Telescope (CFHT): A 3.6-meter optical/infrared telescope co-located with Subaru on Mauna Kea and operated as a shared international research facility. Directly comparable mission and user base despite smaller aperture.
• W. M. Keck Observatory: Operates two 10-meter optical/infrared telescopes on the same Mauna Kea summit. Keck is Subaru's closest functional peer, sharing site, instrumentation philosophy, and a general-purpose research mission serving the international astronomy community.
• Palomar Observatory (Caltech): Operates the 5.1-meter Hale Telescope and other optical/infrared instruments for Caltech and its partners. A comparable single-mirror research telescope facility supporting general observer science, though smaller aperture.
• NASA Infrared Telescope Facility (IRTF): A 3-meter infrared telescope on Mauna Kea operated by NASA for the planetary science and astronomy community. Shares the same summit site and adjacent mission profile, making it a directly comparable infrared research facility.
• Gemini Observatory: Operates 8.1-meter optical/infrared telescopes at Mauna Kea and Cerro Pachón. Comparable aperture and instrument suite to Subaru, with similar shared-facility governance and time-allocation model.

Broad incumbents

• NSF NOIRLab: Operates multiple optical/infrared observatories including Cerro Tololo, Kitt Peak, and the share of Gemini. NOIRLab is the closest U.S. counterpart in mission — running general-purpose optical/IR facilities for an international research community.
• European Southern Observatory (ESO): Operates the VLT (four 8.2-meter unit telescopes), ALMA, and is building the Extremely Large Telescope (ELT). ESO is the dominant multi-facility optical/infrared operator and the most direct comparison for Subaru's role in international astronomy, though it spans many sites and instruments.

Emerging players

• Giant Magellan Telescope Organization (GMTO): Developing a 24.5-meter optical/infrared telescope in Chile's Atacama Desert. Like TMT, GMT represents the next-generation extremely large telescope that will compete with Subaru for community science time once operational.
• Thirty Meter Telescope International Observatory (TMT): Planned 30-meter optical/infrared telescope targeted for Mauna Kea. TMT is a generational successor to Subaru-class facilities and is being actively supported by the NAOJ Hawaii Observatory, making it the most strategically entangled peer.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/subarutel_eng
• YouTubeyoutube.com/SubaruTelescopeNAOJ
• Facebookfacebook.com/naoj.eng

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about Subaru Telescope