Spectrometers
FCAS
The Focused Cavity Aerosol Spectrometer (FCAS) counts and sizes aerosol particles by measuring the amount of light scattered as they pass through a laser beam. The instrument consists of a sampling inlet, a Particle Measuring model Focused Cavity Aerosol Spectrometer, and a data acquisition and recording system. Additional information available at "http://www.dfrc.nasa.gov/Research/AirSci/ER-2/pi_inst.html" [Summary provided by NASA]