Aluminum ring with a center plate covered in green felt. Three small aluminum brackets placed equilaterally on side. Housed together with A20050388000, 001, 003, and 005 in a crate (79.5"x23.0"x22.0"0) Created by Smithsonian National Air and Space Museum Date Created 03/17/2022 Source Smithsonian National Air and Space Museum Keywords Astronomers; Instruments; Science; Space; Telescopes Rights and Restrictions Not determined
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