12 September 2012 Design and status of the Balloon Experimental Twin Telescope for infrared interferometry (BETTII): an interferometer at the edge of space
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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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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, and J. G. Staguhn "Design and status of the Balloon Experimental Twin Telescope for infrared interferometry (BETTII): an interferometer at the edge of space", Proc. SPIE 8445, Optical and Infrared Interferometry III, 844508 (12 September 2012); doi: 10.1117/12.926376; https://doi.org/10.1117/12.926376
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