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Proceedings Paper

The Gamma-Ray Arc-Minute Imaging System (GRATIS): Mechanical Design And Expected Performance
Author(s): Michael Seiffert; Philip Lubin; Charles J. Hailey; Klaus P. Ziock; Fiona A. Harrison; Steven M. Kahn
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Paper Abstract

We are constructing a balloon experiment, GRATIS, which will perform the first arcminute imaging of cosmic sources in the 30 - 200 keV energy band. Observations conducted with GRATIS can provide data relevant to several key problems in high energy astrophysics including the physical processes responsible for the high energy tail observed in the soft gamma-ray spectra of clusters of galaxies and the origin of both the diffuse and point source components of the gamma-ray emission from the Galactic Center. This paper discusses the scientific motivations in more detail, outlines the experiment, discusses several aspects of the design and construction of hardware components, gives an overview of the stabilized platform, and shows the expected performance and sensitivity.

Paper Details

Date Published: 27 November 1989
PDF: 12 pages
Proc. SPIE 1159, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy and Atomic Physics, (27 November 1989); doi: 10.1117/12.962592
Show Author Affiliations
Michael Seiffert, University of California, Santa Barbara (United States)
Philip Lubin, University of California, Santa Barbara (United States)
Charles J. Hailey, Lawrence Livermore National Laboratory (United States)
Klaus P. Ziock, Lawrence Livermore National Laboratory (United States)
Fiona A. Harrison, University of California, Berkeley (United States)
Steven M. Kahn, University of California, Berkeley (United States)


Published in SPIE Proceedings Vol. 1159:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy and Atomic Physics
Charles J. Hailey; Oswald H. W. Siegmund, Editor(s)

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