Usuda Star Dome
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is a
public observatory A public observatory is an astronomical observatory mainly dedicated to public and educational purposes. It is often supported by a municipality, a school or an astronomical society. The primary purpose of public observatories is to offer exte ...
located in
Saku Saku may refer to: Places *Saku, Nagano, a city in Japan *Saku, Nagano (Minamisaku), a town in Japan *Saku Parish, a rural municipality in Harju County, Estonia **Saku, Estonia, a small borough in Saku Parish, Harju County, Estonia *Saku Constituen ...
,
Nagano Nagano may refer to: Places * Nagano Prefecture, a prefecture in Japan ** Nagano (city), the capital city of the same prefecture *** Nagano 1998, the 1998 Winter Olympics *** Nagano Olympic Stadium, a baseball stadium in Nagano *** Nagano Universi ...
,
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
. Saku is one of the best places for astronomical observation in Japan because of high altitude, high rate of sunny days, and limpid air. Visitors are allowed to watch stars through the large
telescope A telescope is a device used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. Originally meaning only an optical instrument using lenses, curved mirrors, or a combination of both to observe ...
from 10 a.m. to 10 p.m.


History

The observatory was founded by Usuda. It was transferred to (new) Saku on April 1, 2005 when Usuda has merged with (old) Saku, Mochizuki, and Asashina.


Telescopes

The main telescope of the observatory is 600 mm
Cassegrain reflector The Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas, the main characteristic being that the optical path folds back onto itself, relative to th ...
constructed by Mitaka Kohki. It has the "Wonder Eye" flexible focal extending system which provides "barrier free" star watching. It is also equipped with two 200 mm refractors also constructed by Mitaka Kohki.


See also

*
Saku Saku may refer to: Places *Saku, Nagano, a city in Japan *Saku, Nagano (Minamisaku), a town in Japan *Saku Parish, a rural municipality in Harju County, Estonia **Saku, Estonia, a small borough in Saku Parish, Harju County, Estonia *Saku Constituen ...
* Saku Children's Science Dome for the Future *
Usuda Deep Space Center Usuda Deep Space Center is a facility of the Japan Aerospace Exploration Agency. It is a spacecraft tracking station in Saku, Nagano, opened in October, 1984. The main features of the station are two large beam waveguide antennas, an older 64 ...
*
List of astronomical observatories This is a list of astronomical observatories ordered by name, along with initial dates of operation (where an accurate date is available) and location. The list also includes a final year of operation for many observatories that are no longer in ...
*
List of astronomical societies A list of notable groups devoted to promoting astronomy research and education. Africa * African Astronomical Society South Africa *Astronomical Society of Southern Africa Asia China * Chinese Astronomical Society India * Akash Mitra Mandal *A ...
*
Lists of telescopes This is a list of lists of telescopes. *List of astronomical interferometers at visible and infrared wavelengths *List of astronomical observatories *List of highest astronomical observatories *List of large optical telescopes *List of largest i ...


References


External links


Usuda Star Dome
{{DEFAULTSORT:Usuda Star Dome Astronomical observatories in Japan Public observatories Buildings and structures in Nagano Prefecture Tourist attractions in Nagano Prefecture Saku, Nagano