Published August 10, 2010
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The JWST/NIRCam coronagraph flight occulters
Chicago
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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.Attached Files
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Additional details
- Eprint ID
- 87763
- Resolver ID
- CaltechAUTHORS:20180711-133331613
- JPL/Caltech
- Created
-
2018-07-11Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 7731