Launched as the Space Infrared Telescope Facility (SIRTF) in August, 2003 and renamed in early 2004,
the Spitzer Space Telescope is performing an extended series of science observations at wavelengths ranging from 3
to 180 microns. The California Institute of Technology is the home of the Spitzer Science Center (SSC) and
operates the Science Operations System (SOS), which supports science operations of the Observatory. A key
function supported by the SOS is the long-range planning and short-term scheduling of the Observatory.
This paper describes the role and function of the SSC Observatory Planning and Scheduling Team (OPST), its
operational interfaces, processes, and tools.