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1 July 1990 Balloon-Borne Infrared Telescope for far-infrared spectroscopy
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Abstract
The Japanese-made Balloon-borne Infrared Telescope (BIRT) designed for FIR astronomy is described. The BIRT system includes a 50-cm-diam telescope; an attitude-control system consisting of an attitude stabilization and a pointing and tracking subsystems; the ground support system consisting of four personal-computer systems; and electronics consisting of three small computer systems, servo circuits, power amplifiers, and other small circuits. Between 1985 and 1988, the BIRT has flown eight times, demonstrating that it is able to provide a suitable telescope observations on a stable platform with a long integration time. Structural diagrams of the BIRT overall system, the optical system, and the wobbling mechanism are presented along with a block diagram of the on-board electronics.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hiroshi Shibai, Haruyuki Okuda, Takao Nakagawa, Nobuyuki Yajima, Toshinori Maihara, Kohei Mizutani, Hideo Matsuhara, Yukiyasu Kobayashi, Norihisa Hiromoto, and Hideki Takami "Balloon-Borne Infrared Telescope for far-infrared spectroscopy", Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); https://doi.org/10.1117/12.19080
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