NIRCam coronagraphic Lyot stop: design, fabrication, and testing
- Creators
- Mao, Yalan
- Andersen, Torben B.
- Kubo, Tracy
- Virgen, Miguel
- Chan, Henry
- Feller, Greg
- Huff, Lynn W.
- Smith, Eric
- Vasudevan, Gopal
- Somerstein, Steve
- Jamieson, Tom
- Horner, Scott
- Krist, John
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Beichman, Charles A.
- Barone, Carmen
- Schmidt, Ron
- Levin, Donna
- Seymour, Steve
- Kelly, Douglas
-
Rieke, Marcia J.
- Others:
- Heaney, James B.
- Kvamme, E. Todd
Abstract
The NIRCam instrument on the James Webb Space Telescope (JWST) will provide a coronagraphic imaging capability to search for extrasolar planets in the 2 - 5 microns wavelength range. This capability is realized by a set of Lyot pupil stops with patterns matching the occulting mask located in the JWST intermediate focal plane in the NIRCam optical system. The complex patterns with transparent apertures are made by photolithographic process using a metal coating in the opaque region. The optical density needs to be high for the opaque region, and transmission needs to be high at the aperture. In addition, the Lyot stop needs to operate under cryogenic conditions. We will report on the Lyot stop design, fabrication and testing in this paper.
Additional Information
© 2011 Society of Photo-optical Instrumentation Engineers (SPIE). Development of the NIRCam instrument at the Lockheed Martin Advanced Technology Center is performed under contract to and teamed with the University of Arizona's Steward Observatory. The University of Arizona in turn is under contract to the JWST Project at the NASA Goddard Space Flight Center. This work was performed and funded by NASA Goddard Space Flight Center under Prime Contract NAS5-02105. Portions of this work were performed at the Jet Propulsion Laboratory/California Institute of Technology. Many thanks to Jeff Vanden Beukel, Alison Nordt, Bruce Steakley, Richard Vassar, Michael Jacoby, Todd Kvamme, Bela Privari, Charles Clark, Yelena Guralnika, Paul Jauch, Rudy Castro (retired), Mark Ridley, Brett Ungerma, Ralph Blenn, Evelyn Goodrich, Derek Dunlap, Duane Harp, Christopher Young, Tom Welsh and NIRCam Team, and Tom Cinque for help and support.Attached Files
Published - 81500E.pdf
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Additional details
- Eprint ID
- 87927
- Resolver ID
- CaltechAUTHORS:20180717-131521172
- NASA
- NAS5-02105
- JPL/Caltech
- Created
-
2018-07-17Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 8150