  Dynamical interactions between planets and debris disks may sculpt the disk
structure and impact planetary orbits, but only a few systems with both imaged
planets and spatially resolved debris disks are known. With the Caltech Submm
Observatory (CSO), we have observed the HR 8799 debris disk at 350{\mu}m. The
350{\mu}m map is the first spatially resolved measurement of the debris disk
encircling the HR 8799 planetary system at this wavelength. Both the flux and
size of the emission are consistent with a Kuiper belt of dust extending from
~100-300 AU. Although the resolution of the current map is limited, the map
shows an indication of offset asymmetric emission, and several scenarios for
this possibility are explored with radiative transfer calculations of a
star-disk system and N-body numerical simulations of planet-disk interactions
with parameters representative of the HR 8799 system.
