Rinehart, SA; Dhabal, A; Fixsen, D; Juanola-Parramon, R; Leisawitz, D; Maher, S; Mentzell, JE; ... Savini, G; + view all Rinehart, SA; Dhabal, A; Fixsen, D; Juanola-Parramon, R; Leisawitz, D; Maher, S; Mentzell, JE; Mundy, L; Rizzo, M; Sampler, H; Sharp, E; Silverberg, R; Casalprim Torres, M; Veach, T; Vila Hernández De Lorenzo, J; Ade, PAR; Tucker, C; Pascale, E; Savini, G; - view fewer (2018) The Balloon Experimental Twin Telescope for infrared interferometry (BETTII): First flight. In: Ground-based and Airborne Telescopes VII.

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Abstract

The Balloon Experimental Twin Telescope for Infrared Interferometry (BETTII) is an 8-meter far-infrared (30-100 μm) double-Fourier Michelson interferometer designed to fly on a high altitude scientific balloon. The project began in 2011, and the payload was declared ready for flight in September 2016. Due to bad weather, the first flight was postponed until June 2017; BETTII was successfully launched on June 8, 2017 for an engineering flight. Over the course of the one night flight, BETTII acquired a large amount of technical data that we are using to characterize the payload. Unfortunately, the flight ended with an anomaly that resulted in destruction of the payload. In this paper, we will discuss the path to BETTII flight, the results of the first flight, and some of the plans for the future.

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