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Prototype unit for an array of cosmic x-ray detectors that flew in the spinning wheel section of the OSO-IV satellite launched in 1967. It was designed to map out non-solar radiation sources as it swept across the sky. The instrument included two photoelectric X-ray detectors based on sodium iodide scintillation crystals as well as one electron and one cosmic-ray detector The experiment was designed and built at American Science and Engineering (AS&E) under the direction of Riccardo Giacconi. This experiment was donated to NASM by AS&E in 2003.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Country of Origin United States of America Type INSTRUMENTS-Scientific Manufacturer American Science & Engineering, Incorporated
 Dimensions 3-D: 33 x 35.6 x 20.3cm (13 x 14 x 8 in.)
 Materials Mixed metals, electronics
Glass
Electronics
 Inventory Number A20030004000 Credit Line Gift of American Science & Engineering Incorporated. Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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