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Aperture synthesis using multiple facilities: Keck aperture masking and the IOTA interferometer

Monnier, J. D. and Millan-Gabet, R. and Tuthill, P. G. and Traub, W. A. and Carleton, N. P. and Coudé du Foresto, V. and Danchi, W. C. and Lacasse, M. G. and Morel, S. and Perrin, G. and Porro, I. L. (2003) Aperture synthesis using multiple facilities: Keck aperture masking and the IOTA interferometer. In: Interferometry for Optical Astronomy II. Proceedings of SPIE. No.4838. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 379-386. ISBN 9780819446176.

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As the number of optical interferometers increase, multi-facility observations become both feasible and scientifically interesting. For imaging of complex sources, the capability of increasing (u,v) coverage by using multiple arrays may be necessary for accurately interpreting the fringe visibility and closure phase data. Toward this end, coordinated observations with the IOTA interferometer and Keck aperture masking have been carried out to test techniques for synthesizing images using data from heterogeneous arrays with sparse (u,v) coverage. In particular, we will focus on how the image prior in the Maximum Entropy Method can be used to efficiently incorporate very high spatial frequency information with "low-resolution" data for imaging the generic prototype "Star + Dust Shell" image morphology. Preliminary results using real data for a few dusty evolved stars are presented.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Monnier, J. D.0000-0002-3380-3307
Millan-Gabet, R.0000-0003-0447-5866
Lacasse, M. G.0000-0001-8627-9708
Additional Information:© 2003 Society of Photo-optical Instrumentation Engineers (SPIE).
Subject Keywords:optical interferometry, aperture synthesis, imaging, deconvolution, maximum entropy
Series Name:Proceedings of SPIE
Issue or Number:4838
Record Number:CaltechAUTHORS:20190116-091920339
Persistent URL:
Official Citation:John D. Monnier, Rafael Millan-Gabet, Peter G. Tuthill, Wesley A. Traub, Nathaniel P. Carleton, Vincent Coude du Foresto, William C. Danchi, Marc G. Lacasse, Sebastien Morel, Guy S. Perrin, Irene L. Porro, "Aperture synthesis using multiple facilities: Keck aperture masking and the IOTA interferometer," Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003); doi: 10.1117/12.459694
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92312
Deposited By: Tony Diaz
Deposited On:18 Jan 2019 03:49
Last Modified:16 Nov 2021 03:49

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