The Portable Auroral Imager (PAI) provides high temporal
resolution optical measurements of auroral phenomena on a campaign basis. High
sensitivity is achieved through the use of modern image intensifier
technology in conjunction with a charge-coupled device. The
imager is equipped with a standard C-mount lens adapter, allowing
the use of a wide range of optical assemblies from telescopes to
all-sky lenses. Field of view/spatial resolution can thus be tailored
to closely match that needed to best study the phenomenon at hand and
to provide supporting measurements for any other instrument
simultaneously employed. Data is stored for later digitization using
high-resolution analog video recording equipment. The imager itself is
stored in an easily transported foam-fitted aluminum case.