Terrestrial Planet Finder Coronagraph flight baseline 1 design report
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TPF-C↗
Engineering topics
Ho, Tim
Publications and source records attributed to Ho, Tim.
Metrology system for the Terrestrial Planet Finder Coronagraph
The Terrestrial Planet Finder (TPF) employs an aggressive coronagraph designed to obtain better than 1e-10 contrast inside the third Airy ring. Minute changes in low-order aberration content scatter significant light at this position. One implication is the requirement to control low-order aberrations induced by motion of the secondary mirror relative to the primary mirror; sub-nanometer relative positional stability is required. We propose a 6-beam laser truss to monitor the relative positions of the two mirrors. The truss is based on laser metrology developed for the Space Interferometry Mission.
Terrestrial Planet Finder (TPF)↗
Are they out there? the search for habitable planets
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coronagraph↗