1. Top
  2. Facility information

Facility information

Observatory and restaurant

  • ☆Seiwa Plateau Astronomical Observatory☆彡

     Seiwa Plateau Astronomical Observatory is located on the southern outer rim of Mount Aso at an altitude of 700m on the Imuta Plateau in Yamato Town (commonly known as Seiwa Plateau). It is conveniently located with a 360-degree view.
     You can also enjoy a spectacular view of Mt Aso to the north and the 1,000m-class Kyushu Mountains to the south.
     There are few city lights and the air is clear, so you can enjoy the many stars in the mountains.

    ・Mark:700m
    ・east longitude:131.06
    ・north latitude:32.44

    Background of the founding

     In November 1987, Kumamoto Prefectural Observatory staff's success in photographing Comet Bradfield on Seiwa Plateau (Imuta Highlands) was featured in the newspapers.
     Since then, Seiwa Village (now Yamato Town) has gained a reputation as a village where the stars can be seen beautifully and where the darkness is a treasure. In 1988 The 1st Kyushu Star Festa was held at Former Asahi Elementary School, and many astronomy fans began to visit Seiwa Village every year.
     Subsequently, talk of building an observatory was aroused as a tourist attraction for astronomy enthusiasts and locals, and the long-awaited Seiwa Plateau Astronomical Observatory was completed in April 1993.Furthermore, in 2013, the city's achievements were recognised when it received the Milky Way Award from the Starry Sky Town/Blue Sky Town National Council.Furthermore, the Yamato Town Starry Sky Environment Conservation Ordinance was enacted on March 9, 2020, and the observatory is attracting attention nationwide.
  • Seiwa Kogen no Yado

    There are lodge-style accommodation facilities (10 in total) on the premises.
    Why not stay at Seiwa Kogen no Yado and relax while gazing at the starry sky?

    Participation in stargazing events is also included as a service!
  • Restaurant"Seiza no Mori (woods)"

    At restaurant Seiza no Mori (woods), super-sized yakiniku is a standard menu.
    It is served as dinner for in-house guests.

    Snacks and coffee are also available.
    Please drop in when you come to Seiwa Plateau.
  • Walking path / lawn open space

    Seasonal wildflowers and wildflowers gently bloom on the walking path on the premises.
    You can enjoy day walks and cherry blossom viewing.
    We also accept event use on the lawn.
  • Seiwa Plateau Astronomical Observatory★Observation room

    The observatory's observation room has a movable sliding roof, allowing you to enjoy the entire starry sky.

    The observation room is equipped with a Newton-style reflecting telescope.
    ・Caliber:500mm
    ・Focal length:2500mm(F5)
    ・Primary and secondary mirrors:Mirror of Naemura                                       *The most important part of a large telescope is the mirror.Naemura mirrors are a masterpiece known only to those in the know.

    We also hold observation sessions using the electronic telescope (Unistera).This telescope is primarily suited for observing nebulae and star clusters.
  • Seiwa Plateau Astronomical Observatory★Training room

    In the rainy weather, the training room will provide guidance on the starry sky using simulation software.

    In addition, we also hold daytime sun observations and workshops for schools and groups such as social studies tours and club activities in the training room.
  • Seiwa Plateau Astronomical Observatory★terrace

    The smartphone lunar surface photography using binoculars is on this terrace.
    In the daytime, you can overlook the Kyushu Mountains.
  • Seiwa Plateau Astronomical Observatory★Exhibition corner

    We are exhibiting donated telescopes, seasonal constellations, and astronomical photographs.
  • Seiwa Plateau Astronomical Observatory★Shop corner

    We sell astronomy books and miscellaneous goods.
    Why not pick one up as a memento of your visit or as a souvenir?

◆Other facilities◆

Parking

56 units(Free) (1st parking lot:26 units/2nd parking lot:30 units)
The parking lot is closed outside business hours.

Smoking corner

Observatory facility:2 places

Toilet for the disabled

Observatory facility:One place

vending machine

Observatory facility entrance:One place