Subaru Telescope

Japanese telescope and observatory
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Subaru Telescope (すばる望遠鏡, Subaru Bōenkyō) is the large telescope of the National Astronomical Observatory of Japan at the Mauna Kea Observatory on the island of Hawaii. From 1999 to 2005, its main mirror was the largest in the world.[2]

Subaru Telescope
MaunaKea Subaru.jpg
The Subaru Telescope
Part ofMauna Kea Observatories
National Astronomical Observatory of Japan Edit this on Wikidata
Location(s)Hawaii, Hawaii County, Hawaii
Coordinates19°49′32″N 155°28′34″W / 19.8256°N 155.4761°W / 19.8256; -155.4761Coordinates: 19°49′32″N 155°28′34″W / 19.8256°N 155.4761°W / 19.8256; -155.4761 Edit this at Wikidata
OrganizationNational Astronomical Observatory of Japan Edit this on Wikidata
Altitude4,139 m (13,579 ft) Edit this at Wikidata
BuiltCompleted 1998
Telescope styleobservatory
optical telescope Edit this on Wikidata
Diameter8.3 m[1] (8.2 m usable)
Secondary diameter1330/1400/1265 mm
Angular resolution0.23″
Collecting area53 m2 (570 sq ft) Edit this at Wikidata
Focal lengthf/1.83 (15.000 m)
Enclosurecylindrical dome Edit this on Wikidata Edit this at Wikidata
Subaru Telescope is located in Hawaii
Subaru Telescope
Location of Subaru Telescope

The telescope is named after the Pleiades star cluster.


In September 1999, former-Princess Sayako of Japan dedicated the telescope.[3] For the dedication, an eyepiece was constructed so that Princess Sayako could look through it directly.[4]


  1. "Corning Museum of Glass - Telescopes and Mirrors". Retrieved 2010-09-22.
  2. Kidsweb, "The Subaru Telescope"; retrieved 2012-8-12.
  3. French, Howard W. "On Hawaii, A Telescope Widens Orbit Of Japanese," New York Times (US). September 19, 1999; retrieved 2012-8-12.
  4. Ferris, Timothy. "Cosmic Vision," National Geographic (US). July 2009; retrieved 2012-8-12.

Other websitesEdit

  Media related to Subaru Telescope at Wikimedia Commons