ACS - Active Cooling System, T=20K;
STR - Star Tracker, defines pointing of the telescope;
HeII - superfluid helium, cooling of primary and secondary mirrors;
FDB - Focal Dichroic Beam-splitter assembly;
SBA - Submillimeter Bolometer Array;
IDA - Infrared Detector Array;
CAU - Cool Amplifier Unit; mKC - milli-Kelvin Cooler (100 mK);
TEA - Telescope Electronics Assembly,
DRPU - Data Registration and Processing Unit.
Notes: 1.
Warm start version.
2. Telescope optics has angular resolution of 1 arcmin with field of view about 1
o.