Fabrication and flight performance of a large area balloon borne hard X-ray telescope |
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| Institution: | 1. Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA;2. DEVCOM Army Research Laboratory, Aberdeen Proving Ground, MD, USA;1. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150000, China;2. Central & Southern China Municipal Engineering Design and Research Institute Co., Ltd, Wuhan 430010, China;3. China Energy Conservation and Environmental Protection Group, Beijing 100089, China;1. Department of Neonatology, Birmingham Women''s Hospital NHS Trust, Birmingham, United Kingdom;2. Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom |
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| Abstract: | We describe the fabrication and flight performance of a balloon-borne large area hard X-ray (20–100 keV) telescope for spectral studies of discrete cosmic X-ray sources. The telescope consists of two multi-wire Xenon filled proportional counters of effective area 1200 cm2 each, mounted on an orientable platform. It can be pre-programmed to track any celestial source with a pointing accuracy of 0.5 degrees. For one hour of observation the telescope has a 5 σ detection sensitivity of 10−5 ph cm−2 s−1. The laboratory test results and the performance in a series of balloon flights conducted in 1984–1986 period is discussed and the preliminary results obtained for some X-ray sources are presented. |
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