Lens, Periscope, MR-3, Freedom 7

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This periscope lens gave Alan Shepard his best view outside his small Mercury spacecraft. Shepard had a small screen in front of him on the control panel which gave him the view as seen through this lens. The lens has two magnification settings, high and low, which provided 80- and 1,900-mile fields of view during his 15-minute flight.
The lens was transferred from NASA to the Museum as part of the Freedom 7 spacecraft in 1961.
McDonnell Aircraft Corp.
Credit Line
Transferred from NASA
Restrictions & Rights
Usage conditions apply
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National Air and Space Museum Collection
Steven F. Udvar-Hazy Center in Chantilly, VA
James S. McDonnell Space Hangar
Inventory Number
Country of Origin
United States of America
Metal, glass
Overall: 6.99 cm long x 13.97 cm diameter, 2.4 kg (2 3/4in. x 5 1/2in., 5.4lb.)
Other (small end): 10.16 cm diameter (4in.)
National Air and Space Museum
SPACECRAFT-Manned-Parts & Structural Components