academic
altitude
altitude measurement
antenna
astronomical observations
astronomy
blue sky
building
campus
celestial altitude
celestial bodies
clear
dome
empty
facilities
gouche meridian
japan
kanto
kanto region
landscape
meridian
meridian ring
mitaka
mitaka campus
mitakashi
national
national astronomical observatory
observation
observation equipment
observation room
observatory
parabolic antenna
planet
precision measurement
radio
radio telescope
science and technology
southchina time
space
space observation
stars
stellar
sunny
telescope
tokyo
tokyo observatory
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