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A general tool for evaluating high-contrast coronagraphic telescope performance error budgets

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dc.contributor.author Marchen, Luis F.
dc.contributor.author Shaklan, Stuart B.
dc.date.accessioned 2015-05-14T23:19:41Z
dc.date.available 2015-05-14T23:19:41Z
dc.date.issued 2009-08-02
dc.identifier.citation SPIE Optics and Photonics, San Diego, California, August 2-6, 2009 en_US
dc.identifier.clearanceno 09-3044
dc.identifier.uri http://hdl.handle.net/2014/45189
dc.description.abstract This paper describes a general purpose Coronagraph Performance Error Budget (CPEB) tool that we have developed under the NASA Exoplanet Exploration Program. The CPEB automates many of the key steps required to evaluate the scattered starlight contrast in the dark hole of a space-based coronagraph. It operates in 3 steps: first, a CodeV or Zemax prescription is converted into a MACOS optical prescription. Second, a Matlab program calls ray-trace code that generates linear beam-walk and aberration sensitivity matrices for motions of the optical elements and line-of-sight pointing, with and without controlled coarse and fine-steering mirrors. Third, the sensitivity matrices are imported by macros into Excel 2007 where the error budget is created. Once created, the user specifies the quality of each optic from a predefined set of PSDs. The spreadsheet creates a nominal set of thermal and jitter motions and combines them with the sensitivity matrices to generate an error budget for the system. The user can easily modify the motion allocations to perform trade studies. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2009 en_US
dc.subject Visual Basic for Applications en_US
dc.subject Terrestrial Planet Finder en_US
dc.title A general tool for evaluating high-contrast coronagraphic telescope performance error budgets en_US
dc.type Preprint en_US


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