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Features of the Subaru Telescope

The environment surrounding the Subaru Telescope

6,500 km from Japan

The Subaru Telescope is located on the Big Island of Hawaii in the middle of the Pacific Ocean, 6,500 km from Japan.

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The Subaru Telescope itself
  • The primary mirror has an aperture of 8.2m.
  • Surface precision of 0.014µm
  • Active-optics technology using 261actuators
  • Regular cleaning of the primary mirror
  • Four foci
  • Main unit 22.2m in height and weighing 555t
Instruments of the Subaru Telescope
  • 43m-high cylindrical dome
  • Seven instruments
  • Vapor deposition of the primary mirror
  • A highly efficient system for switching observational instruments
The environment surrounding the Subaru Telescope
  • 6,500km from Japan
  • Low population density of about 19 people per square kilometer
  • Latitude N 19° 49’ 43”
  • Elevation of 4,207m
  • Clear weather on the peak of Mauna Kea over 80% of the year
  • Razor-sharp astronomical imaging available nowhere else on Earth
totop
Subaru Telescope National Astronomical Observatory of Japan

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About the Subaru Telescope

  • Overview of Subaru Telescope
  • Features of the Subaru Telescope
  • Director of the observatory
  • List of staff members
  • Observational instruments
  • History

The Universe Revealed by the Subaru Telescope

  • The Solar System
  • The Births of Stars and Planetary Systems
  • The Milky Way and its Group
  • The World of Galaxies
  • Energetic Phenomena in the Universe
  • The Distant Universe
  • Dark Matter and Cosmology

Science Results

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  • 1999

Activities of the Observatory

  • Open-Use and Education Activities
  • For Telescope/Instrument Work
  • Public Information and Outreach Office
  • Toward Coexistence with Hawaiian Culture

Subaru Gallery

  • Images from Science Instruments Sorted by the Release Date
  • Images from Science Instruments Sorted by Distance from Earth
  • Starry Nights on Maunakea
  • Facility Photographs
  • Spherical Images of Subaru Telescope
  • Movie gallery
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Publications and Videos

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For Researchers and Students

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This project is supported by "Project to Promote Large Scientific Frontiers" of MEXT.

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