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Fizeau interferometric imaging of Io volcanism with LBTI/LMIRcam

Leisenring, J. M. and Hinz, P. M. and Skrutskie, M. F. and Skemer, A. and Woodward, C. E. and Veillet, C. and Arcidiacono, C. and Bailey, V. and Bertero, M. and Boccacci, P. and Conrad, A. and de Kleer, K. and de Pater, I. and Defrère, D. and Hill, J. and Hofmann, K.-H. and Kaltenegger, L. and La Camera, A. and Nelson, M. J. and Schertl, D. and Spencer, J. and Weigelt, G. and Wilson, J. C. (2014) Fizeau interferometric imaging of Io volcanism with LBTI/LMIRcam. In: Optical and Infrared Interferometry IV. Proceedings of SPIE. No.9146. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 91462S. ISBN 9780819496140. http://resolver.caltech.edu/CaltechAUTHORS:20190424-141803303

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Abstract

The Large Binocular Telescope (LBT) houses two 8.4-meter mirrors separated by 14.4 meters on a common mount. Coherent combination of these two AO-corrected apertures via the LBT Interferometer (LBTI) produces Fizeau interferometric images with a spatial resolution equivalent to that of a 22.8-meter telescope and the light- gathering power of single 11.8-meter mirror. Capitalizing on these unique capabilities, we used LBTI/LMIRcam to image thermal radiation from volcanic activity on the surface of Io at M-Band (4.8 μm) over a range of parallactic angles. At the distance of Io, the M-Band resolution of the interferometric baseline corresponds to a physical distance of ~135 km, enabling high-resolution monitoring of Io volcanism such as ares and outbursts inaccessible from other ground-based telescopes operating in this wavelength regime. Two deconvolution routines are used to recover the full spatial resolution of the combined images, resolving at least sixteen known volcanic hot spots. Coupling these observations with advanced image reconstruction algorithms demonstrates the versatility of Fizeau interferometry and realizes the LBT as the first in a series of extremely large telescopes.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2057290DOIArticle
ORCID:
AuthorORCID
Skemer, A.0000-0001-6098-3924
de Kleer, K.0000-0002-9068-3428
de Pater, I.0000-0002-4278-3168
Defrère, D.0000-0003-3499-2506
Additional Information:© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). 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 Astrofísica, Italy; LBT Beteiligungsgesellschaft, Germany, representing the Max-Planck Society, the Astrophys-ical 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
LBT Corporation PartnersUNSPECIFIED
Subject Keywords:Infrared, Fizeau, Interferometry, Large Binocular Telescope, LMIRcam, Deconvolution, Io, Volcano
Record Number:CaltechAUTHORS:20190424-141803303
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190424-141803303
Official Citation:J. M. Leisenring, P. M. Hinz, M. Skrutskie, A. Skemer, C. E Woodward, C. Veillet, C. Arcidiacono, V. Bailey, M. Bertero, P. Boccacci, A. Conrad, K. de Kleer, I. de Pater, D. Defrère, J. Hill, K.-H. Hofmann, L. Kaltenegger, A. La Camera, M. J. Nelson, D. Schertl, J. Spencer, G. Weigelt, and J. C. Wilson "Fizeau interferometric imaging of Io volcanism with LBTI/LMIRcam", Proc. SPIE 9146, Optical and Infrared Interferometry IV, 91462S (24 July 2014); doi: 10.1117/12.2057290; https://doi.org/10.1117/12.2057290
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:94941
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:24 Apr 2019 21:52
Last Modified:24 Apr 2019 21:52

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