A balloon-borne coded aperture telescope for low-energy gamma-ray astronomy
作者： Philip P. Dunphy , Mark L. McConnell , Alan Owens , Edward L. Chupp , David J. Forrest
DOI: 10.1016/0168-9002(89)90403-8
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摘要: Abstract A telescope for imaging cosmic γ-ray emission over the energy range 160 keV to 9.3 MeV has been developed and successfully flown on a high altitude balloon Palestine, Texas 1 October, 1984. This instrument consists of coded mask based 5 × 7 uniformly redundant array (URA) scintillator consisting 35 bismuth germanate (BGO) detectors. The can image sources with an intrinsic resolution 3.8° within 15.2° 22.8° field view. properties are described its capability is demonstrated results from observation region Crab Nebula. response was found be well represented by bivariate Gaussian function full width at half-maximum (FWHM) 4.8°. centroid determined precision ± 12 arc min.
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