The Submillimeter Array (SMA)
is an 8-element radio interferometer located atop
Mauna Kea in Hawaii.
Operating at frequencies from 180 GHz to 700 GHz, the
6m dishes may be arranged into configurations with baselines as
long as 509m, producing a synthesized beam of sub-arcsecond
width. Each element can observe with two receivers simultaneously,
with 2 GHz bandwidth each. The digital correlator backend
allows flexible allocation of thousands of spectral channels to each receiver.
The Submillimeter Array is a joint venture of the
Smithsonian Astrophysical Observatory
Academia Sinica Institute of Astronomy and Astrophysics.