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Proceedings Paper

Starlight suppression from the starshade testbed at NGAS
Author(s): Rocco Samuele; Tiffany Glassman; Adam M. J. Johnson; Rupal Varshneya; Ann Shipley
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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 m, vacuum chamber designed to replicate the Fresnel number of an equivalent full-scale starshade mission, namely the flagship New Worlds Observer (NWO) configuration. Subscale starshades manufactured by the NGAS foundry have shown 10-7 starlight suppression at an equivalent full-mission inner working angle of 85 milliarseconds. In this paper, we present an overview of the experimental set up, scaling relationships to an equivalent full-scale mission, and preliminary results from the testbed. We also discuss potential limitations of the current generation of starshades and improvements for the future.

Paper Details

Date Published: 19 August 2009
PDF: 9 pages
Proc. SPIE 7440, Techniques and Instrumentation for Detection of Exoplanets IV, 744004 (19 August 2009); doi: 10.1117/12.824889
Show Author Affiliations
Rocco Samuele, Northrop Grumman Space Technology (United States)
Tiffany Glassman, Northrop Grumman Aerospace Systems (United States)
Adam M. J. Johnson, Northrop Grumman Aerospace Systems (United States)
Rupal Varshneya, Northrop Grumman Space Technology (United States)
Ann Shipley, Univ. of Colorado at Boulder (United States)


Published in SPIE Proceedings Vol. 7440:
Techniques and Instrumentation for Detection of Exoplanets IV
Stuart B. Shaklan, Editor(s)

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