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Overview of LBTI: a multipurpose facility for high spatial resolution observations

Hinz, P. M. and Defrère, D. and Skemer, A. and Bailey, V. and Stone, J. and Spalding, E. and Vaz, A. and Pinna, E. and Puglisi, A. and Esposito, S. and Montoya, M. and Downey, E. and Leisenring, J. and Durney, O. and Hoffmann, W. and Hill, J. and Millan-Gabet, R. and Mennesson, B. and Danchi, W. and Morzinski, K. and Grenz, P. and Skrutskie, M. and Ertel, S. (2016) Overview of LBTI: a multipurpose facility for high spatial resolution observations. In: Optical and Infrared Interferometry and Imaging V. Proceedings of SPIE. No.9907. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art No. 990704. ISBN 978-1-5106-0193-2. http://resolver.caltech.edu/CaltechAUTHORS:20170112-111509318

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Abstract

The Large Binocular Telescope Interferometer (LBTI) is a high spatial resolution instrument developed for coherent imaging and nulling interferometry using the 14.4 m baseline of the 2×8.4 m LBT. The unique telescope design, comprising of the dual apertures on a common elevation-azimuth mount, enables a broad use of observing modes. The full system is comprised of dual adaptive optics systems, a near-infrared phasing camera, a 1-5 μm camera (called LMIRCam), and an 8-13 μm camera (called NOMIC). The key program for LBTI is the Hunt for Observable Signatures of Terrestrial planetary Systems (HOSTS), a survey using nulling interferometry to constrain the typical brightness from exozodiacal dust around nearby stars. Additional observations focus on the detection and characterization of giant planets in the thermal infrared, high spatial resolution imaging of complex scenes such as Jupiter's moon, Io, planets forming in transition disks, and the structure of active Galactic Nuclei (AGN). Several instrumental upgrades are currently underway to improve and expand the capabilities of LBTI. These include: Improving the performance and limiting magnitude of the parallel adaptive optics systems; quadrupling the field of view of LMIRcam (increasing to 20"x20"); adding an integral field spectrometry mode; and implementing a new algorithm for path length correction that accounts for dispersion due to atmospheric water vapor. We present the current architecture and performance of LBTI, as well as an overview of the upgrades.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1117/12.2233795 DOIArticle
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2543075PublisherArticle
ORCID:
AuthorORCID
Skemer, A.0000-0001-6098-3924
Millan-Gabet, R.0000-0003-0447-5866
Additional Information:© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE). LBTI is funded by a NASA grant in support of the Exoplanet Exploration Program. 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.
Funders:
Funding AgencyGrant Number
NASAUNSPECIFIED
Subject Keywords:LBT, interferometry, infrared instruments, adaptive optics, imaging
Record Number:CaltechAUTHORS:20170112-111509318
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20170112-111509318
Official Citation:P. M. Hinz ; D. Defrère ; A. Skemer ; V. Bailey ; J. Stone ; E. Spalding ; A. Vaz ; E. Pinna ; A. Puglisi ; S. Esposito ; M. Montoya ; E. Downey ; J. Leisenring ; O. Durney ; W. Hoffmann ; J. Hill ; R. Millan-Gabet ; B. Mennesson ; W. Danchi ; K. Morzinski ; P. Grenz ; M. Skrutskie ; S. Ertel; Overview of LBTI: a multipurpose facility for high spatial resolution observations. Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 990704 (August 4, 2016); doi:10.1117/12.2233795.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73470
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:20 Jan 2017 00:31
Last Modified:21 Aug 2017 20:00

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