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Proceedings Paper

Fringe visibility performance evaluation for long baseline stellar interferometers with adaptive optics
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Paper Abstract

Long baseline stellar interferometers have been considered an essential tool in studying astrophysics; however, fringe visibilities for stellar interferometers with large apertures are often corrupted by atmospheric turbulence. To reduce the atmospheric turbulence effect, adaptive optics may be used to enhance fringe visibility for stellar interferometers with aperture sizes larger than the atmospheric coherence length. Fringe visibility performance evaluation for long baseline stellar interferometers with and without adaptive optics is presented in this paper. The methodologies used in this paper are described as follows: the optical transfer function for stellar interferometers with large apertures is derived first; then, performance metrics, coherence loss factor and Strehl ratio, are defined. Finally, fringe visibility performance with and without adaptive optics for different turbulent strengths is evaluated using computer simulation results. We show that Noll's mean square residual phase error can be used to compare the coherence loss factor of an interferometer with the Strehl ratio of a single telescope.

Paper Details

Date Published: 20 October 2004
PDF: 7 pages
Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.552331
Show Author Affiliations
Chueh Ting, New Mexico State Univ. (United States)
Michael Kent Giles, New Mexico State Univ. (United States)


Published in SPIE Proceedings Vol. 5491:
New Frontiers in Stellar Interferometry
Wesley A. Traub, Editor(s)

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