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Proceedings Paper

The AFTA coronagraph instrument
Author(s): Stuart Shaklan; Marie Levine; Marc Foote; Michael Rodgers; Michael Underhill; Luis Marchen; Dan Klein
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Paper Abstract

The Astrophysics Focused Telescope Assets (AFTA) study in 2012-2013 included a high-contrast stellar coronagraph to complement the wide-field infrared survey (WFIRST) instrument. The idea of flying a coronagraph on this telescope was met with some skepticism because the AFTA pupil has a large central obscuration with six secondary mirror struts that impact the coronagraph sensitivity. However, several promising coronagraph concepts have emerged, and a corresponding initial instrument design has been completed. Requirements on the design include observations centered 0.6 deg off-axis, on-orbit robotic serviceability, operation in a geosynchronous orbit, and room-temperature operation (driven by the coronagraph’s deformable mirrors). We describe the instrument performance requirements, the optical design, an observational scenario, and integration times for typical detection and characterization observations.

Paper Details

Date Published: 26 September 2013
PDF: 10 pages
Proc. SPIE 8864, Techniques and Instrumentation for Detection of Exoplanets VI, 886415 (26 September 2013);
Show Author Affiliations
Stuart Shaklan, Jet Propulsion Lab. (United States)
Marie Levine, Jet Propulsion Lab. (United States)
Marc Foote, Jet Propulsion Lab. (United States)
Michael Rodgers, Synopsys, Inc. (United States)
Michael Underhill, Jet Propulsion Lab. (United States)
Luis Marchen, Jet Propulsion Lab. (United States)
Dan Klein, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 8864:
Techniques and Instrumentation for Detection of Exoplanets VI
Stuart Shaklan, Editor(s)

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