小笠原村父島三日月山

小笠原村父島三日月山 - sometimes translated as the Crescent Moon Mountain observatory - sits on Chichijima, the main island of Japan's remote Ogasawara Islands. Established in 1994, it looks out from one of the most isolated inhabited places in the Pacific.

About 小笠原村父島三日月山

The site is known locally for sunset observation, including views of the rare "green flash" phenomenon that can appear as the sun dips below the horizon over the open ocean. Chichijima itself, part of the Ogasawara Islands roughly 1,000 kilometres south of Tokyo, is also home to other scientific facilities, including the VERA Ogasawara radio observatory and the long-running Kakioka magnetic observation station.

Location & getting there

Chichijima lies in the Ogasawara Islands, a UNESCO World Heritage archipelago administered by Tokyo but reachable only by a roughly 24-hour ferry from the mainland, since there is no airport. The observatory's island setting, far from mainland light pollution, makes its dark skies especially valuable for stargazing.

Visiting

Given Chichijima's remote location, visiting takes real planning - check ferry schedules and local tourism information for the island before you go, since public access details for the observatory itself are not widely published.

See your named star from here

Few places offer skies as dark as a remote Pacific island, making a spot like this a striking place to look for a named star. If you've named a star for someone, browse the star catalogue to find its coordinates before you plan the trip.