Nobeyama Radio Observatory (NRO)
The radio astronomy facility of the National Astronomical
Observatory of Japan, founded in 1978 and located 120 km west of Tokyo at
Minamisaku, Nagano. It has played a pioneering role in millimeter wave astronomy
through use of a 45-meter dish and the Nobeyama Millimeter Array –
an aperture-synthesis telescope
consisting of six 10-m antenna movable along two intersecting 500-m baselines.
These instruments are the world's largest at millimeter wavelengths and
work in conjunction, locally as the 7-element RAINBOW interferometer and
globally as part of the VLBI Space Observatory Program. NRO is also home
to the Nobeyama Radioheliograph, which investigates solar radio emission
using 84 dishes of 0.8-m aperture in a T-shaped array.
| Nobeyama Millimeter Array