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Proceedings Paper

Progress at the starshade testbed at Northrop Grumman Aerospace Systems: comparisons with computer simulations
Author(s): Rocco Samuele; Rupal Varshneya; Tim P. Johnson; Adam M. F. Johnson; Tiffany Glassman
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Paper Abstract

We report on progress at the Northrop Grumman Aerospace Systems (NGAS) starshade testbed. The starshade testbed is a 42.8 meter vacuum chamber that replicates the Fresnel number of an equivalent full-scale starshade mission, namely the flagship New Worlds Observer (NWO) configuration. This paper reports on recent upgrades to the testbed and comparisons of previously published experimental results with computer simulations - which show encouraging agreement to within a factor of 1.5. We also report on a new generation of sub-scale starshades that for the first time allow us to exactly match the Fresnel number of a full-scale mission.

Paper Details

Date Published: 10 August 2010
PDF: 12 pages
Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 773151 (10 August 2010); doi: 10.1117/12.856334
Show Author Affiliations
Rocco Samuele, Northrop Grumman Aerospace Systems (United States)
Rupal Varshneya, Northrop Grumman Aerospace Systems (United States)
Tim P. Johnson, Northrop Grumman Aerospace Systems (United States)
Adam M. F. Johnson, Northrop Grumman Aerospace Systems (United States)
Tiffany Glassman, Northrop Grumman Aerospace Systems (United States)


Published in SPIE Proceedings Vol. 7731:
Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave
Jacobus M. Oschmann; Mark C. Clampin; Howard A. MacEwen, Editor(s)

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