MAXIMA

MAXIMA (for Millimeter Anisotropy Experiment Imaging Array) was a 1.3-meter far infrared telescope with a 16-bolometer-array receiver, flown in a high-altitude balloon over Texas in 1998 and 1999. It mapped the cosmic microwave background (CMB) over roughly 1/100 of the celestial sphere, to measure CMB anisotropies.

A follow-on was MAXIPOL, which utilized the same telescope with a new receiver for mapping CMB polarization.