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Usage guidance

Seiwa Plateau Astronomical Observatory

Seiwa Plateau Astronomical Observatory is located at an altitude of 700 m, where you can see the beautiful stars with clear air.
You can enjoy Mt Aso the north side and the 1000 m class Kyushu Mountains on the south side, and enjoy the best location.
In bright times, the voices of wild birds (cuckoos, warblers, hototogis, pheasants, etc.) also echo.
At dusk you may meet higashi, and at night you may encounter rabbits, deer, wild boars, foxes, etc.
  • Opening hours, closed days, calendar

    • ★★★

      【Opening hours】
      14: 00-22: 00 Note) The museum will be closed on nights when it cannot be observed due to bad weather.)

      【closing day】
      Tuesday(Open during GW, Obon, New Year's holidays)
      *Open only on Saturdays and Sundays from January 20th to February 7th, 3rd year of Reiwa

      【Upon arrival】
      ・Please prepare warm clothes as the night of the Seiwa Plateau cools down even in summer.Be sure to bring warm clothes in winter.
      ・In winter, please come with winter tires on your car.
      ・Animals such as deer and wild boars may pop out on the night road from National Route 218 to the observatory.
      Please come at a speed that can avoid collisions.
      ・If you are visiting for the first time, please contact the observatory for directions.
       *Car navigation may guide you to another route.
  • Astronomical observation party

    Seiwa Plateau Astronomical Observatory holds astronomical observation meetings every day.(Closed on Tuesdays)

    At the astronomical observation society, using the large telescope in the observation room on the second floor,
    ・Observation of astronomical objects visible on the day(For example...Saturn, Jupiter, Moon, Star Cluster, etc.)
    ・Seasonal constellation guide
    About, the specialized staff will guide you.

    Reservations are required to participate.(Paid)

    ≪Information on current observation time≫
    *From January 20th to February 7th, 3rd year of Reiwa, the observation session will be held only on Saturdays and Sundays.
    1st time from 19:00 2nd time from 20:00 to 3rd time from 21:00 
    *Please contact the observatory as the time may change depending on the weather conditions, the number of people reserved, etc.
    *Depending on the reservation situation, the third time may not be implemented.
    • ★★★

      【Approximate start time of observation meeting】
      ★Spring 19:30 to 22:00
      ★Summer 20: 00-22: 00
      ★Autumn 19:30 to 22:00
      ★Winter 19:00 to 22:00
      *Schedule from 1/1 ① From 19:00 ② From 20:00 ③ From 21:00
      *③ The observation session from 21:00 will be held only on Saturdays and other days when many visitors are expected. 
      *Please contact us as the start time may change depending on the season and weather.
      *In order to prevent new corona infections, the number of employees is limited and divided into multiple times.

      【Observation fee】
      High school students and above:510 yen/Elementary and junior high school students:300 yen/Preschooler:Free

      【The number of people per one time】
      Up to 15 people

      【Observation time per time】
      About 30 to 40 minutes

      【Reservation】
      ・Please make a reservation in advance.
       *It will be closed as soon as it becomes capacity.
      ・See "How to make a reservation" below.
  • School and group tours

    We also accept schools and organizations such as social studies tours and club activities.
    We are preparing for daytime sun observation, workshops, starry sky guidance using simulation software, etc.
    Please contact us by email or phone.
    • ★★★

      【Visit menu】
      ・Starry sky guidance on a personal computer simulator(20 minutes)
      ・Large telescope visit(20 minutes)
      ・Solar glass making and solar observation(Half an hour)
      ・Constellation quick board making(Half an hour)

      【Visit fee】
      It depends on the age of participants and the tour menu.Please contact us in advance.

      【Application】
      ・Please apply in advance.
      ・See "How to make a reservation" below.
  • workshop

    Seiwa Plateau Astronomical Observatory workshop is held at the Seiwa Plateau Astronomical Observatory.
    Why don't you try it when you visit Seiwa Plateau?
    We are accepting anytime from lunch time to evening.We accept orders by e-mail, telephone, and reception counter.
    • ★Solar Observation Glass Making Workshop

      Directly observing the sun is very dangerous.
      Why don't you observe the sun by using a film that allows you to see the sun safely?
      After completion, decorate with color pens and stickers.Let's finish with the original sun glass.

      【Content】Sun glass work and sun observation
      【Participation fee】300 yen(*150 yen for guests)
      【Time】About 30 minutes

    • ★Constellation Hayami board making workshop

      I would like to accompany you to the starry sky observation. "Constellation quick board"
      You can check which constellation the star is in front of by adjusting the date, time and direction.
      Why don't you make it by hand using a work kit?

      【Content】Constellation quick board making
      【Participation fee】300 yen(*150 yen for guests)
      【Time】About 30 minutes
  • How to make a reservation

    • Please fill in the following contents and apply from the email address below the top page.

      ◆For observation / event reservation
      【Preferred date】
      【Desired time】  Hour
      【Your name / Kana】
      【Contact TEL】
      【Contact email address】
      【The number of participants】  Man(High school students and above Man/Elementary and junior high school students Man/Preschooler)


      ◆For group tour reservations
      【Preferred date】
      【Desired time】  Hours to hours
      【Group name / school name】
      【Representative name and kana】
      【Contact TEL】
      【Contact email address】
      【The number of participants】  Man(student Man,Leader)
      【Desired tour menu】


      ◆For workshop
      【Workshop name】Making sun glasses/Constellation quick board making
      【Preferred date】
      【Desired time】  Hour
      【Your name / Kana】
      【Contact TEL】
      【Contact email address】
      【The number of participants】  Man(High school students and above Man/Elementary and junior high school students Man/Preschooler)