Testing PIAA Coronagraphs at NASA Ames

Details Testing PIAA Coronagraphs at NASA Ames Testing PIAA Coronagraphs at NASA Ames

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..430..453g&link_type=abstract

Pathways Towards Habitable Planets, proceedings of a workshop held 14 to 18 September 2009 in Barcelona, Spain. Edited by Vincen

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We report on our tests of phase induced amplitude apodization (PIAA) coronagraphs in a new laboratory at NASA Ames. This laboratory is operated in a highly stabilized air environment, and it complements existing efforts at NASA JPL’s high contrast imaging testbed. At the time of writing, we are operating a refractive PIAA system and have achieved imaging contrast of 7 × 10-8 in a dark zone from 2.0 to 4.8 λ/D from an artificial star. We are also directing L3 Tinsley Laboratories in the fabrication of a next generation polychromatic PIAA coronagraph mirror set.

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