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This is one of two optical devices installed on an Apollo Command Module that assisted the astronauts in navigating from Earth to the Moon. It allowed the astronauts to take fixes on stars, which were combined with other data in the Module's guidance computer to give them accurate position and velocity.

This device, made by the Kollsman Instrument Company, was flown on Apollo 16, a lunar mission that flew in April 1972.

Transferred from NASA to the Museum in 1977.

 Display Status

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

Human Spaceflight
Object Details
Country of Origin United States of America Type INSTRUMENTS-Navigational Manufacturer Kollsman Instrument Company
 Dimensions 3-D: 17.8 x 7.6cm (7 x 3 in.)
 Materials Metal housing with glass optics
 Inventory Number A19770205000 Credit Line Transferred from the National Aeronautics and Space Administration Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.