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Proceedings Paper

Toward visible wavelength coherent imaging with the LBT
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Paper Abstract

The Large Binocular Telescope with its integrated adaptive optics systems and the LBTI beamcombiner provides a good platform for carrying out coherent imagin across its 22.7 m baseline. The first cameras used with LBTI have focused on infrared wavelengths. We describe a concept, called the LBT Interferometer Visible Extension (LIVE) to carry out coherent imaging with the LBT at visible wavelengths. LIVE will be able to create images of some of the stars with the largest angular diameters, map the surface of solar system moons, and provide detailed imaging of the inner scattered light regions of protoplanetary and transition disks. An initial approach can use the beamcombiner with its existing infrared phase sensor to carry out coherent imaging using frame selection to improve the image quality. Refined and more versatile phase sensing and correction can be implemented in a second stage to enable observations of a wider range of targets. LIVE will work both as a coherent imager, as well as a flexible dual aperture AO imager where simultaneous differential measurements can be made through independent use of each arm. We describe the science case and technical description below. We plan to develop the system with a flexible approach that allows increasingly complex modes of observation to be added once the basic performance is demonstrated.

Paper Details

Date Published: 24 July 2014
PDF: 12 pages
Proc. SPIE 9146, Optical and Infrared Interferometry IV, 914605 (24 July 2014); doi: 10.1117/12.2057695
Show Author Affiliations
Philip Hinz, Steward Observatory, The Univ. of Arizona (United States)
S. Esposito, INAF - Osservatorio Astrofisico di Arcetri (Italy)
D. Apai, Steward Observatory, The Univ. of Arizona (United States)
G. Brusa, Steward Observatory, The Univ. of Arizona (United States)
L. Close, Steward Observatory, The Univ. of Arizona (United States)
O. Guyon, Steward Observatory, The Univ. of Arizona (United States)
J. Hill, Steward Observatory, The Univ. of Arizona (United States)
J. Males, Steward Observatory, The Univ. of Arizona (United States)
E. Pinna, INAF - Osservatorio Astrofisico di Arcetri (Italy)
A. Puglisi, INAF - Osservatorio Astrofisico di Arcetri (Italy)


Published in SPIE Proceedings Vol. 9146:
Optical and Infrared Interferometry IV
Jayadev K. Rajagopal; Michelle J. Creech-Eakman; Fabien Malbet, Editor(s)

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