BOOMERanG

BOOMERanG (for Balloon Observations of Millimetric Extragalactic Radiation and Geophysics) was a 1.3-meter far infrared telescope with a bolometer-array receiver, flown in a high-altitude balloon over the Antarctic in 1998 and 2003. A major project was mapping the cosmic microwave background (CMB). The 2003 flight included the polarimeter, B2K.

The terms BOOM01, BOOM05, and BOOMERanG 2005 refer to data from BOOMERanG released or published in the respective years. The 2005 date refers to the data release: it is for the 2003 flight and was described in the 2006 paper linked below.