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Proceedings Paper

Design and status of the Balloon Experimental Twin Telescope for infrared interferometry (BETTII): an interferometer at the edge of space
Author(s): S. A. Rinehart; R. B. Barclay; R. K. Barry; D. J. Benford; P. C. Calhoun; D. J. Fixsen; E. T. Gorman; M. L. Jackson; C. A. Jhabvala; D. T. Leisawitz; S. F. Maher; J. E. Mentzell; L. G. Mundy; M. J. Rizzo; R. F. Silverberg; J. G. Staguhn
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Paper Abstract

The Balloon Experimental Twin Telescope for Infrared Interferometry (BETTII) is an 8-meter baseline far-infrared interferometer designed to fly on a high altitude balloon. BETTII uses a double-Fourier Michelson interferometer to simultaneously obtain spatial and spectral information on science targets; the long baseline permits subarcsecond angular resolution, a capability unmatched by other far-infrared facilities. Here, we present key aspects of the overall design of the mission and provide an overview of the current status of the project. We also discuss briefly the implications of this experiment for future space-based far-infrared interferometers.

Paper Details

Date Published: 12 September 2012
PDF: 15 pages
Proc. SPIE 8445, Optical and Infrared Interferometry III, 844508 (12 September 2012); doi: 10.1117/12.926376
Show Author Affiliations
S. A. Rinehart, NASA Goddard Space Flight Ctr. (United States)
R. B. Barclay, NASA Goddard Space Flight Ctr. (United States)
R. K. Barry, NASA Goddard Space Flight Ctr. (United States)
D. J. Benford, NASA Goddard Space Flight Ctr. (United States)
P. C. Calhoun, NASA Goddard Space Flight Ctr. (United States)
D. J. Fixsen, NASA Goddard Space Flight Ctr. (United States)
Univ. of Maryland, College Park (United States)
E. T. Gorman, NASA Goddard Space Flight Ctr. (United States)
M. L. Jackson, NASA Goddard Space Flight Ctr. (United States)
C. A. Jhabvala, NASA Goddard Space Flight Ctr. (United States)
D. T. Leisawitz, NASA Goddard Space Flight Ctr. (United States)
S. F. Maher, NASA Goddard Space Flight Ctr. (United States)
Science Systems and Applications, Inc. (United States)
J. E. Mentzell, NASA Goddard Space Flight Ctr. (United States)
L. G. Mundy, Univ. of Maryland, College Park (United States)
M. J. Rizzo, NASA Goddard Space Flight Ctr. (United States)
Univ. of Maryland, College Park (United States)
R. F. Silverberg, NASA Goddard Space Flight Ctr. (United States)
J. G. Staguhn, NASA Goddard Space Flight Ctr. (United States)
Johns Hopkins Univ. (United States)


Published in SPIE Proceedings Vol. 8445:
Optical and Infrared Interferometry III
Françoise Delplancke; Jayadev K. Rajagopal; Fabien Malbet, Editor(s)

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