Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-12-19
Astronomy and Astrophysics
Astrophysics
9 pages, 3 figures, accepted for publication and presentation at the 2003 IEEE Aerospace Conference, Big Sky, Montana
Scientific paper
The Fizeau Interferometer Testbed (FIT) is a collaborative effort between NASA's Goddard Space Flight Center, the Naval Research Laboratory, Sigma Space Corporation, and the University of Maryland. The testbed will be used to explore the principles of and the requirements for the full, as well as the pathfinder, Stellar Imager mission concept. It has a long term goal of demonstrating closed-loop control of a sparse array of numerous articulated mirrors to keep optical beams in phase and optimize interferometric synthesis imaging. In this paper we present the optical and data acquisition system design of the testbed, and discuss the wavefront sensing and control algorithms to be used. Currently we have completed the initial design and hardware procurement for the FIT. The assembly and testing of the Testbed will be underway at Goddard's Instrument Development Lab in the coming months.
Carpenter Kenneth G.
Huet Hubert
Lyon Richard G.
Marzouk Joe
Solyar Gregory
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