Optical design of the Terrestrial Planet Finder Coronagraph starlight suppression system

A baseline design for NASA's Terrestrial Planet Finder Coronagraph (TPFC) starlight suppression system (SSS) is described. The design is based on a 8x3.5m elliptical aperture telescope leading to terrestrial planet detection at a minimum angle of ~4λ/D. The design accommodates classical Lyot coronagraph as well as shaped pupil approaches and includes separate optical paths for two polarizations each with its own deformable mirror control. Critical design challenges and trades are described.