The James Clerk Maxwell Telescope (JCMT)
is a sub-millimeter infrared (far infrared) telescope near
the summit of Mauna Kea in Hawaii,
covering a wavelength-range of roughly half a millimeter to a millimeter.
Its primary mirror is 15 meters across, it is located at
an altitude of 4000 meters and has been in operation since 1987.
It is used to study the solar system, interstellar dust and
gas, and distant galaxies.
Instruments: