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Proceedings Paper

The JWST/NIRCam coronagraph flight occulters
Author(s): John E. Krist; Kunjithapatham Balasubramanian; Richard E. Muller; Stuart B. Shaklan; Douglas M. Kelly; Daniel W. Wilson; Charles A. Beichman; Eugene Serabyn; Yalan Mao; Pierre M. Echternach; John T. Trauger; Kurt M. Liewer
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Paper Abstract

The NIRCam instrument on the James Webb Space Telescope will have a Lyot coronagraph for high contrast imaging of extrasolar planets and circumstellar disks at λ=2 - 5 μm. Half-tone patterns are used to create graded-transmission image plane masks. These are generated using electron beam lithography and reactive ion etching of a metal layer on an antireflection coated sapphire substrate. We report here on the manufacture and evaluation of the flight occulters.

Paper Details

Date Published: 11 August 2010
PDF: 6 pages
Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 77313J (11 August 2010); doi: 10.1117/12.856488
Show Author Affiliations
John E. Krist, Jet Propulsion Lab. (United States)
Kunjithapatham Balasubramanian, Jet Propulsion Lab. (United States)
Richard E. Muller, Jet Propulsion Lab. (United States)
Stuart B. Shaklan, Jet Propulsion Lab. (United States)
Douglas M. Kelly, Steward Observatory, The Univ. of Arizona (United States)
Daniel W. Wilson, Jet Propulsion Lab. (United States)
Charles A. Beichman, Jet Propulsion Lab. (United States)
Eugene Serabyn, Jet Propulsion Lab. (United States)
Yalan Mao, Lockheed Martin Space Systems Co. (United States)
Pierre M. Echternach, Jet Propulsion Lab. (United States)
John T. Trauger, Jet Propulsion Lab. (United States)
Kurt M. Liewer, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 7731:
Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave
Jacobus M. Oschmann; Mark C. Clampin; Howard A. MacEwen, Editor(s)

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