The High Elevation Antarctic Terahertz Telescope (HEAT)
is a 61-cm far infrared (FIR)telescope located at
an altitude of 4040 meters on Ridge A (near Dome A)
in Antarctica, which began operation in 2012.
HEAT is unique because no current major telescopes observe
portions of the FIR spectrum.
Before its operation, a pilot 20-cm telescope called Pre-HEAT
operated at the site.
HEAT shares the site (or is considered part of)
PLATO-R (for Plateau Observatory for Ridge A),
which includes two other instruments that collect data on
atmospheric conditions.
The site is totally automated, operated remotely.