28 August 2014 Building an interferometer at the edge of space: pointing and phase control system for BETTII
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Abstract
We propose an architecture for the control system of BETTII,1 a far-infrared, balloon-borne interferometer with a baseline of 8 meters. This system involves multiple synchronized control loops for real-time pointing control and precise attitude knowledge. This will enable accurate phase estimation and control, a necessity for successful interferometry. We present the overall control strategy and describe our flight hardware in detail. We also show our current test setup and the first results of our coarse pointing loop.
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Maxime J. Rizzo, Maxime J. Rizzo, S. A. Rinehart, S. A. Rinehart, J. B. Alcorn, J. B. Alcorn, R. B. Barclay, R. B. Barclay, R. K Barry, R. K Barry, D. J. Benford, D. J. Benford, A. Dhabal, A. Dhabal, D. J. Fixsen, D. J. Fixsen, A. S. Gore, A. S. Gore, S. Johnson-Shapoval, S. Johnson-Shapoval, D. T. Leisawitz, D. T. Leisawitz, S. F. Maher, S. F. Maher, L. G. Mundy, L. G. Mundy, A. Papageorgiou, A. Papageorgiou, E. Pascale, E. Pascale, A. Rau, A. Rau, R. F. Silverberg, R. F. Silverberg, P. Taraschi, P. Taraschi, T. J. Veach, T. J. Veach, S. Weinreich, S. Weinreich, } "Building an interferometer at the edge of space: pointing and phase control system for BETTII", Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 91433H (28 August 2014); doi: 10.1117/12.2055016; https://doi.org/10.1117/12.2055016
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