Subaru Telescope
Mauna Kea, United States · built 1997
Subaru Telescope (Subaru Bōenkyō) is the 8.2-metre (320 in) telescope of the National Astronomical Observatory of Japan, located at the Mauna Kea Observatory on Hawaii. It is named after the open star cluster known in English as the Pleiades. It had the largest monolithic primary mirror in the world from its commissioning until the Large Binocular Telescope opened in 2005.
Observatory data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).