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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】
      From 14:00 to 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)

      【Upon arrival】
      ・We ask for your cooperation in preventing infections such as wearing a mask, measuring the temperature, and disinfecting your hands.
      ・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 boar pop out on the night road from National Route 218 
       In some cases, please come at a speed that can avoid a collision.
      ・If you are visiting for the first time, please contact the observatory for directions or enjoy the access page.
       Please watch.
       *Car navigation may guide you to another route.
  • Astronomical observation party

    Seiwa Plateau Astronomical Observatory holds astronomical observation meetings every day.
    (Closed on Tuesdays and may be temporarily closed on bad weather days.)

    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)
    Please make a reservation by phone or email.

    ★We are holding an observation session thoroughly to prevent the spread of new coronavirus infection!
     When you come to the hotel, you will be infected by measuring the temperature, wearing a mask, disinfecting your fingers, and refraining from participating if you are in poor physical condition.
     Thank you for your cooperation in the measures.
    • The staff will guide you through astronomical observations and seasonal constellations with a large telescope.If you are lucky, you may meet a shooting star!

      ★★★

      【Estimated start time of the observation session】 
      ★Spring Autumn 19:30 to 22:00
      ★ Summer 20: 00-22: 00 
      ★ Winter 19:00 to 22:00
      *Scheduled start time as of October 1 ① From 19:30 ② From 20:20 ③ From 21:10
      *The start time will change depending on the season and weather.
      *We are implementing this by limiting the number of personnel to prevent the new corona infection.
      【Observation fee】High school students and above:510 yen/Elementary and junior high school students:300 yen/Preschooler:Free
      *Infants are dangerous, so please refrain from doing so.
      【Capacity / time required per session】15 people, about 30 minutes
      【Reservation required.】
      *If you would like to observe, please make a reservation at the observatory.
      *It will be closed as soon as it becomes capacity.
      *Please cancel your reservation until 17:00 on the day of the event.Please note that a cancellation fee may be incurred if you do not contact us (including immediately before the observation).
      ・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)
      ・Easy octopus making and kite flying(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.
    *We may not be able to provide information during busy seasons.
    • ★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
      【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
      【Time】About 30 minutes
    • ★Kite making and kite raising workshop

      Just assemble a simple kite kit called a diamond kite.
      Why don't you draw a picture of a star or a picture of Amabie on the front of the kite in hopes of the corona escaping, or make your own original kite?


       "Contents" Original kite making and kite raising
       "Participation fee" 300 yen
       "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】
      【Municipalities】
      【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】
      *Please contact us in advance.

      ◆For workshop
      【Workshop name】Making sun glasses/Constellation quick board making/Handmade kite flying experience
      【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)