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Two flight spare units for the ultraviolet photometers flown on OGO-4 for airglow and Lyman alpha studies. These are simple ionization chambers set behind filters of varying substances and thicknesses, typically lithium fluoride. Orbiting Geophysical Observatory 4 was launched in July 1967. The photometers were transferred to NASM by the Naval Research Laboratory in July 1982.

 Display Status

This object is on display in Space Science at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Space Science
Object Details
Country of Origin United States of America Type SPACECRAFT-Uncrewed-Parts & Structural Components Manufacturer Naval Research Laboratory
Science and Technology Laboratory
 Dimensions 3-D (L x W x H) (larger piece): 20.3 × 16.5 × 20cm, 3.6kg (8 × 6 1/2 × 7 7/8 in., 8lb.)
3-D (L x W x H) (smaller piece): 19 × 7.9 × 14cm, 0.6kg (7 1/2 × 3 1/8 × 5 1/2 in., 1.3lb.)
 Materials Magnesium and aluminum casings
Glass
Electronics
 Inventory Number A19840024000 Credit Line Transferred from the Naval Research Laboratory Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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