Jododaira Observatory — Experience Tōhoku's finest starry sky at 1575m elevation

Overview

Jododaira Observatory is a celestial observation facility at about 1575m elevation on the Bandai-Asahi Skyline in Fukushima City, Fukushima Prefecture. Nestled within volcanic highlands surrounded by Mt. Asahi-Kofuji and Issaikyo-zan, this site offers some of Tōhoku's finest observation conditions.

Within a 5.5m dome sits a 40cm reflector telescope allowing observation of nebulae, star clusters, and planets. The high elevation and absence of major light sources nearby ensure that the Milky Way appears clearly visible to the naked eye.

Observation environment

The 1575m elevation is highly appealing to Kanto and Tōhoku astronomy enthusiasts. Higher altitude means thinner atmosphere and reduced atmospheric water vapor and dust, resulting in enhanced star brightness.

Though about 40km from Fukushima city, as you climb the Bandai-Asahi Skyline curves, city lights fade behind you. The observatory's surrounding Bortle Scale Class 2 darkness permits observation of 6th magnitude stars or brighter on good nights.

Facilities and equipment

The main telescope is a 40cm reflector with professional staff providing seasonal celestial commentary. The attached visitor center also teaches about Mt. Asahi's nature and volcanic activity.

A rest house serves light meals with comfortable rest spaces and restrooms, suitable for extended observations.

Access and precautions

The Bandai-Asahi Skyline is open mid-April to mid-November, closing winters. Tolls have been eliminated. From Fukushima West IC to the skyline entrance takes about 30 minutes, then about 10 minutes more to the observatory.

Volcanic activity may cause traffic restrictions, so confirm latest information before visiting. At high elevation, summer nights drop below 10°C, making warm clothing essential.