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Proceedings Paper

The Large Binocular Telescope interferometer
Author(s): Philip M. Hinz; James Roger P. Angel; Donald W. McCarthy; William F. Hoffman; Chien Y. Peng
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Paper Abstract

The Large Binocular Telescope (LBT), with dual 8.4 m optics on a common mount, is unique among the large-aperture interferometers. Deformable secondaries on the telescope capable of adaptive atmospheric correction allow beam combination after only three warm reflections. The design allows the implementation of two powerful uses of interferometry: suppression of starlight (or nulling interferometry) and wide-field imaging (or Fizeau interferometry). Nulling will allow detection of extrasolar planetary systems (from either zodiacal emission or giant planets) down to solar system-equivalent levels for nearby stars. This will dramatically increase our knowledge of the prevalence and make-up of extrasolar planetary systems. Fizeau interferometry will allow imaging of even complex structure at the resolution of a 22.8 m telescope. To implement these two powerful techniques the University of Arizona and NASA are collaborating to build the Large Binocular Telescope Interferometer (LBTI) a cryogenic instrument capable of sensitive interferometric observations in the infrared.

Paper Details

Date Published: 21 February 2003
PDF: 5 pages
Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003); doi: 10.1117/12.459338
Show Author Affiliations
Philip M. Hinz, Steward Observatory/Univ. of Arizona (United States)
James Roger P. Angel, Steward Observatory/Univ. of Arizona (United States)
Donald W. McCarthy, Steward Observatory/Univ. of Arizona (United States)
William F. Hoffman, Steward Observatory/Univ. of Arizona (United States)
Chien Y. Peng, Steward Observatory/Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 4838:
Interferometry for Optical Astronomy II
Wesley A. Traub, Editor(s)

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