Key Technology Gunma Astronomical Observatory (Prefectural Gunma Astronomical Observatory) (キーテクノロジーぐんま天文台(県立ぐんま天文台))
Flow of the course
About this spot
A prefectural observatory located in the high-altitude Takayama Village, offering stargazing with a 150cm reflecting telescope (one of the largest in the world open to the public) and a 65cm reflecting telescope, among others. Staff operate the telescopes and provide explanations of celestial objects.
Season & hours
Name: ぐんま天文台
Venue: ぐんま天文台
Tips
Admission is 300 yen for adults and free for junior high school students and younger. No reservation is needed for individuals, but groups generally must reserve at least 6 weeks in advance. It takes 10-15 minutes to walk from the parking lot to the main building along a footpath (lit at night), and the parking lot closes after the observatory closes, so please allow plenty of time.
Best time to visit
6:00-9:00 PM in winter (7:00-10:00 PM in summer; varies by season)
How was this spot?
Access & map
6860-86 Nakayama, Takayama-mura, Agatsuma-gun, Gunma 377-0702
Model course featuring this spot

2026 Gunma Astronomical Observatory Full-Day Starry Sky Course
Gunma
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