CaltechAUTHORS
Published August 10, 2010 | Version Published
Book Section - Chapter Open

The JWST/NIRCam coronagraph flight occulters

Creators

  • 1. ROR icon Jet Propulsion Lab
  • 2. ROR icon University of Arizona

Contributors

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.

Additional Information

© 2010 Society of Photo-optical Instrumentation Engineers (SPIE). This analysis was performed at the Jet Propulsion Laboratory/Cal. Inst. of Technology and funded by the NIRCam instrument project and science team.

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Additional details

Identifiers

Eprint ID
87763
Resolver ID
CaltechAUTHORS:20180711-133331613

Funding

JPL/Caltech

Dates

Created
2018-07-11
Created from EPrint's datestamp field
Updated
2021-11-15
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Physics Department
Series Name
Proceedings of SPIE
Series Volume or Issue Number
7731