Kagikake Pass Oyama Observatory is located on Mount Oyama in Kanagawa Prefecture, Japan. You can access it by taking the Odakyu Line to Isehara Station, then catching a bus to Oyama Cable Station, followed by the Oyama Cable Car to Oyama-dera Station, and finally hiking approximately 90 minutes to reach Kagikake Pass Observatory.
The best stargazing conditions at Kagikake Pass Oyama Observatory occur during clear nights from late autumn to early spring when atmospheric conditions are most stable. Peak viewing times are between 9 PM and 3 AM when light pollution is minimal. Winter months offer the clearest skies, while spring and autumn provide comfortable temperatures for extended observation sessions.
Kagikake Pass Oyama Observatory offers excellent views of constellations, planets, meteor showers, and deep-sky objects. The facility features telescopes for planetary and lunar observation, and the high altitude location provides clear views of the Milky Way. Visitors can observe seasonal constellations, Jupiter's moons, Saturn's rings, and various nebulae throughout the year.
Kagikake Pass Oyama Observatory typically requires advance reservations for guided observation sessions and telescope use. While the facility provides telescopes and basic equipment, bringing warm clothing, flashlights with red filters, and comfortable hiking shoes is recommended. Check the official website for current booking requirements, operating hours, and any COVID-19 restrictions before visiting.
The hike from Oyama Cable Car station to Kagikake Pass Observatory is considered moderate difficulty, requiring about 90 minutes of uphill walking on mountain trails. Hikers should bring proper footwear, water, snacks, and headlamps for night visits. The trail can be challenging in winter conditions, so check weather forecasts and trail conditions before attempting the climb to the observatory.
