  A new instrument, BAM (Balloon-borne Anisotropy Measurement), designed to
measure cosmic microwave background (CMB) anisotropy at medium angular scales
was flown for the first time in July of 1995. BAM is unique in that it uses a
cryogenic differential Fourier transform spectrometer coupled to a lightweight
off-axis telescope. The very successful first flight of BAM demonstrates the
potential of the instrument for obtaining high quality CMB anisotropy data.
