Defrère, D. and Hinz, P. and Downey, E. and Ashby, D. and Bailey, V. and Brusa, G. and Christou, J. and Danchi, W. C. and Grenz, P. and Hill, J. M. and Hoffmann, W. F. and Leisenring, J. and Lozi, J. and McMahon, T. and Mennesson, B. and Millan-Gabet, R. and Montoya, M. and Powell, K. and Skemer, A. and Vaitheeswaran, V. and Vaz, A. and Veillet, C. (2014) Co-phasing the Large Binocular Telescope: status and performance of LBTI/PHASECam. In: Optical and Infrared Interferometry IV. Proceedings of SPIE. No.9146. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 914609 . ISBN 978-0-8194-9614-0. http://resolver.caltech.edu/CaltechAUTHORS:20150605-083304647
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Abstract
The Large Binocular Telescope Interferometer is a NASA-funded nulling and imaging instrument designed to coherently combine the two 8.4-m primary mirrors of the LBT for high-sensitivity, high-contrast, and high-resolution infrared imaging (1.5-13 μm). PHASECam is LBTI's near-infrared camera used to measure tip-tilt and phase variations between the two AO-corrected apertures and provide high-angular resolution observations. We report on the status of the system and describe its on-sky performance measured during the first semester of 2014. With a spatial resolution equivalent to that of a 22.8-meter telescope and the light-gathering power of single 11.8-meter mirror, the co-phased LBT can be considered to be a forerunner of the next-generation extremely large telescopes (ELT).
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| Additional Information: | © 2014 SPIE. The authors are grateful to M. Colavita for his advice. LBTI is funded by a NASA grant in support of the Exoplanet Exploration Program (NSF 0705296). The LBT is an international collaboration among institutions in the United States, Italy and Germany. LBT Corporation partners are: The University of Arizona on behalf of the Arizona university system; Istituto Nazionale di Astrofisica, Italy; LBT Beteiligungsgesellschaft, Germany, representing the Max-Planck Society, the Astrophysical Institute Potsdam, and Heidelberg University; The Ohio State University, and The Research Corporation, on behalf of The University of Notre Dame, University of Minnesota and University of Virginia. | |||||||||
| Group: | Infrared Processing and Analysis Center (IPAC) | |||||||||
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| Record Number: | CaltechAUTHORS:20150605-083304647 | |||||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20150605-083304647 | |||||||||
| Official Citation: | D. Defrère ; P. Hinz ; E. Downey ; D. Ashby ; V. Bailey ; G. Brusa ; J. Christou ; W. C. Danchi ; P. Grenz ; J. M. Hill ; W. F. Hoffmann ; J. Leisenring ; J. Lozi ; T. McMahon ; B. Mennesson ; R. Millan-Gabet ; M. Montoya ; K. Powell ; A. Skemer ; V. Vaitheeswaran ; A. Vaz ; C. Veillet; Co-phasing the Large Binocular Telescope: status and performance of LBTI/PHASECam. Proc. SPIE 9146, Optical and Infrared Interferometry IV, 914609 (July 24, 2014); doi:10.1117/12.2057178 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 58030 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 05 Jun 2015 18:15 | |||||||||
| Last Modified: | 21 Aug 2017 20:02 |
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