  Exoplanets are abundant in our galaxy and yet characterizing them remains a
technical challenge. Solar System planets provide an opportunity to test the
practical limitations of exoplanet observations with high signal-to-noise data
that we cannot access for exoplanets. However, data on Solar System planets
differ from exoplanets in that Solar System planets are spatially resolved
while exoplanets are unresolved point-sources. We present a novel instrument
designed to observe Solar System planets as though they are exoplanets, the
Planet as Exoplanet Analog Spectrograph (PEAS). PEAS consists of a dedicated
0.5-m telescope and off-the-shelf optics, located at Lick Observatory. PEAS
uses an integrating sphere to disk-integrate light from the Solar System
planets, producing spatially mixed light more similar to the spectra we can
obtain from exoplanets. This paper describes the general system design and
early results of the PEAS instrument.
