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Proceedings Paper

Engineering trade studies for the Terrestrial Planet Finder Coronagraph primary mirror
Author(s): David A. Content; Raymond G. Ohl; Terry Cafferty; Eri J. Cohen; Robert M. Egerman; Charles D. Engler; Louis G. Fantano; Peter Feher; Joseph J. Green; Timothy Y. Ho; Joseph M. Howard; Sarah Hunyadi; Sandra M. Irish; Cliffton E. Jackson; Andrew Kissil; Eug-Yun Kwack; Neil F. Martin; Anthony J. Martino; Jeff Pattison; Sharon A. S. Peabody; Andrew M. Smith; Ichung Weng
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Paper Abstract

The Terrestrial Planet Finder Coronagraph (TPF-C) is conducting pre-formulation design and analysis studies based on a 8x3.5m elliptical aperture, light-weight primary mirror feeding an internally occulted (Lyot) coronagraph. The primary mirror has challenging static and dynamic performance requirements. We report on recent trade studies and concepts including open- and closed-back mirror blank designs and comparisons of thermal and mechanical performance; aperture shape alternatives to better match the coronagraph application with weight, packaging, and fabrication constraints; and mirror material trades.

Paper Details

Date Published: 30 August 2005
PDF: 11 pages
Proc. SPIE 5867, Optical Modeling and Performance Predictions II, 58670X (30 August 2005); doi: 10.1117/12.618687
Show Author Affiliations
David A. Content, NASA Goddard Space Flight Ctr. (United States)
Raymond G. Ohl, NASA Goddard Space Flight Ctr. (United States)
Terry Cafferty, TC Technology, Inc. (United States)
Eri J. Cohen, Jet Propulsion Lab. (United States)
Robert M. Egerman, ITT Industries, Space Systems Div., LLC (United States)
Charles D. Engler, NASA Goddard Space Flight Ctr. (United States)
Louis G. Fantano, NASA Goddard Space Flight Ctr. (United States)
Peter Feher, Jet Propulsion Lab. (United States)
Joseph J. Green, Jet Propulsion Lab. (United States)
Timothy Y. Ho, Jet Propulsion Lab. (United States)
Joseph M. Howard, NASA Goddard Space Flight Ctr. (United States)
Sarah Hunyadi, Jet Propulsion Lab. (United States)
Sandra M. Irish, NASA Goddard Space Flight Ctr. (United States)
Cliffton E. Jackson, NASA Goddard Space Flight Ctr. (United States)
Andrew Kissil, Jet Propulsion Lab. (United States)
Eug-Yun Kwack, Jet Propulsion Lab. (United States)
Neil F. Martin, NASA Goddard Space Flight Ctr. (United States)
Anthony J. Martino, NASA Goddard Space Flight Ctr. (United States)
Jeff Pattison, NASA Goddard Space Flight Ctr. (United States)
Sharon A. S. Peabody, Swales Aerospace, Inc. (United States)
Andrew M. Smith, NASA Goddard Space Flight Ctr. (United States)
Ichung Weng, Swales Aerospace, Inc. (United States)


Published in SPIE Proceedings Vol. 5867:
Optical Modeling and Performance Predictions II
Mark A. Kahan, Editor(s)

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