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Published 1985 | Published
Book Section - Chapter Open

A Balloon-Borne Imaging Gamma-Ray Telescope


This paper describes a balloon-borne coded-aperture y-ray telescope for galactic and extragalactic astronomy observations. The instrument, called GRIP (Gamma Ray Imaging Payload), is designed for measurements in the energy range from 30 keV to 5 MeV with an angular resolution of 0.6° over a 20° field of view. Distinguishing characteristics of the telescope are a rotating hexagonal coded-aperture mask and a thick NaI scintillation camera. Rotating hexagonal coded-apertures and the development of thick scintillation cameras are discussed in Cook et al. [1984 and 1985, referred to as Papers I and II respectively].

Additional Information

© NASA/STI. Provided by the NASA Astrophysics Data System. We thank R. E. Vogt for contributions to this project. This work is supported in part by NASA grant NGR 05-002-160.

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