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The balloon experimental twin telescope for infrared interferometry (BETTII): An experiment for high angular resolution in the far-infrared

Rinehart, S. A., Rizzo, M., Benford, D. J., Fixsen, D. J., Veach, T. J., Dhabal, A., Leisawitz, D. T., Mundy, L. G., Silverberg, R. F., Barry, R. K., Staguhn, J. G., Barclay, R., Mentzell, J. E., Griffin, Matthew Joseph, Ade, Peter A. R., Pascale, Enzo, Klemencic, Georgina, Savini, G. and Juanola-Parramon, R. 2014. The balloon experimental twin telescope for infrared interferometry (BETTII): An experiment for high angular resolution in the far-infrared. Publications of the Astronomical Society of the Pacific 126 (941) , pp. 660-673. 10.1086/677402

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Abstract

The Balloon Experimental Twin Telescope for Infrared Interferometry (BETTII) is a new balloon-borne far-infrared interferometer, being designed to provide spatially-resolved spectroscopy in the far infrared (30–90 μm). The combination of an 8-meter baseline with a double-Fourier Michelson interferometer allows the identification and separation of closely-spaced astronomical sources, while also providing a low-resolution spectrum for each source. In this wavelength range, BETTII will provide subarcsecond angular resolution, a capability unmatched by other far-infrared facilities. This paper provides an overview of the entire design of the BETTII experiment, with a short discussion of the predicted performance on flight.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: Astronomical Society of the Pacific
ISSN: 0004-6280
Funders: STFC
Date of Acceptance: 31 May 2014
Last Modified: 17 Apr 2019 21:11
URI: http://orca.cf.ac.uk/id/eprint/63951

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