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Title:
The Hard X-ray experiment on the Astronomical Netherlands Satellite
Authors:
Gursky, H.; Schnopper, H.; Parsignault, D.
Affiliation:
AA(Smithsonian Astrophysical Observatory and Harvard College Observatory, Cambridge, Mass), AB(Smithsonian Astrophysical Observatory and Harvard College Observatory, Cambridge, Mass), AC(American Science and Engineering, Inc., Cambridge, Mass)
Publication:
Astrophysical Journal, vol. 201, Nov. 1, 1975, pt. 2, p. L127-L131. (ApJL Homepage)
Publication Date:
11/1975
Category:
Instrumentation and Photography
Origin:
STI
NASA/STI Keywords:
Astronomical Netherlands Satellite, Satellite-Borne Instruments, Spaceborne Astronomy, X Ray Astronomy, European Space Programs, Line Spectra, Satellite Design
DOI:
10.1086/181958
Bibliographic Code:
1975ApJ...201L.127G

Abstract

The Hard X-ray Experiment flown on the Astronomical Netherlands Satellite is described. The instrument consists of two parts. One is a large-area detector of about 60 sq cm in total area, sensitive in the energy range between 1.5 and 30 keV. Two counters comprise this detector, each collimated 10 min by 3 deg and offset in the narrow direction by 4 min. The other part is a Bragg-crystal assembly consisting of two PET crystals and counters aligned to search for the silicon emission lines near 2 keV. Instrument characteristics and orbital operations are described.

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