These two buildings, located on a hill near the 305 m dish,
house the Observatory's optical instrumentation. This equipment
is used to study the spectra of natural airglow emissions that
originate in the upper atmosphere. We also maintain two powerful
lidars (or laser radars) that we use to measure the density,
temperature, and winds of the atmosphere. The light from the
lasers (shown in one photo) can be seen at night up to a few
miles from the Observatory.
