MBI at UW's Pine Bluff Observatory                                                      Interference fringes measured by MBI                                             

The Millimeter-wave Bolometric Interferometer (MBI) is a novel instrument optimized for measuring the polarization of the cosmic microwave background radiation.

Interferometers directly measure the angular power spectrum of the sky fluctuations and are especially good at controlling systematic effects in precision measurements.

Some papers on MBI:

"Modeling the quasi-optical performance of CMB astronomical interferometers"

"The Millimeter-wave Bolometric Interferometer"

"The Einstein Polarization Interferometer for Cosmology (EPIC) and the Millimeter-wave Bolometric Interferometer (MBI)"