
Proceedings Paper
Optical modeling activities for NASA's James Webb Space Telescope (JWST): VI. secondary mirror figure compensation using primary mirror segment motionsFormat | Member Price | Non-Member Price |
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Paper Abstract
This is part six of a series describing the ongoing optical modeling activities for the James Webb Space
Telescope (JWST). The first two discussed modeling JWST on-orbit performance using wavefront
sensitivities to predict line of sight motion induced blur and stability during thermal transients. The third
investigates the aberrations resulting from alignment and figure errors after compensation of the controllable
degrees of freedom of the observatory (i.e. primary and secondary mirrors). This paper follows the theme of
the third, but considers the highly unlikely case where a gross figure error occurs on the secondary mirror.
We then compensate for this error using figure control on the primary mirror. The level of compensation as
well as the total motions required are evaluated and reported. Impact to image quality over the full field of
the observatory is also discussed.
Paper Details
Date Published: 26 August 2009
PDF: 12 pages
Proc. SPIE 7436, UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts IV, 74360C (26 August 2009); doi: 10.1117/12.825420
Published in SPIE Proceedings Vol. 7436:
UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts IV
Howard A. MacEwen; James B. Breckinridge, Editor(s)
PDF: 12 pages
Proc. SPIE 7436, UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts IV, 74360C (26 August 2009); doi: 10.1117/12.825420
Show Author Affiliations
Joseph M. Howard, NASA Goddard Space Flight Ctr. (United States)
Lee D. Feinberg, NASA Goddard Space Flight Ctr. (United States)
Published in SPIE Proceedings Vol. 7436:
UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts IV
Howard A. MacEwen; James B. Breckinridge, Editor(s)
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