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Proceedings Paper

DCATT dispersed fringe sensor: modeling and experimenting with the transmissive phase plates
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Paper Abstract

Control algorithms developed for coarse phasing the segmented mirrors of the Next Generation Space Telescope (NGST) are being tested in realistic modeling and on the NGST wavefront control testbed, also known as DCATT. A dispersed fringe sensor (DFS) is used to detect piston errors between mirror segments during the initial coarse phasing. Both experiments and modeling have shown that the DFS provides an accurate measurement of piston errors over a range from just under a millimeter to well under a micron.

Paper Details

Date Published: 28 July 2000
PDF: 6 pages
Proc. SPIE 4013, UV, Optical, and IR Space Telescopes and Instruments, (28 July 2000); doi: 10.1117/12.394011
Show Author Affiliations
Fang Shi, Jet Propulsion Lab. (United States)
David C. Redding, Jet Propulsion Lab. (United States)
Charles W. Bowers, NASA Goddard Space Flight Ctr. (United States)
Andrew E. Lowman, Jet Propulsion Lab. (United States)
Scott A. Basinger, Jet Propulsion Lab. (United States)
Todd A. Norton, NASA Goddard Space Flight Ctr. (United States)
Peter Petrone, NASA Goddard Space Flight Ctr. (United States)
Pamela S. Davila, NASA Goddard Space Flight Ctr. (United States)
Mark E. Wilson, NASA Goddard Space Flight Ctr. (United States)
Rene A. Boucarut, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 4013:
UV, Optical, and IR Space Telescopes and Instruments
James B. Breckinridge; Peter Jakobsen, Editor(s)

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