WFIRST Science with a Probe Class Mission
  WFIRST is the highest priority space mission of the Decadal review, however,
it is unlikely to begin in this decade primarily due to a anticipated NASA
budget that is unlikely to have sufficient resources to fund such a mission.
For this reason we present a lower cost mission that accomplishes all of the
WFIRST science as described in the Design Reference Mission 1 with a probe
class design. This is effort is motivated by a desire to begin WFIRST in a
timely manner and within a budget that can fit within the assets available to
NASA on a realistic basis. The design utilizes dichroics to form four focal
planes all having the same field of view to use the majority of available
photons from a 1.2 meter telescope.
