This object is on display in the Boeing Aviation Hangar room at Steven F. Udvar-Hazy Center in Chantilly, VA.
Collection Item Summary:
Photoelectric sun sensing unit similar to those flown on the OSO series satellites. The OSO satellites consisted of a circular bus that rotated at 30 rpm and an upper sail-like section that carried solar cells and additional instruments. (see OSO-1; Catalogue # A19820270000). Signals from this sail-mounted sun sensor were fed to a servo-feedback mechanism to keep the upper portion instruments and solar cells pointed on the center of the sun within +/- 1 minute of arc. This device was transferred to NASM by NASA (GSFC) in 1988.
Collection Item Long Description:
National Air and Space Museum
Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum
Ball Brothers Research Corp.
NASA, Goddard Space Flight Center
Transferred from the National Aeronautics and Space Administration
Aluminum, glass optics
Other: 3 × 2 × 4 in. (7.6 × 5.1 × 10.2cm)
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National Air and Space Museum Collection
Country of Origin
United States of America
SPACECRAFT-Unmanned-Parts & Structural Components