Visual photographic, and interferometric tests were performed on the space shuttle overhead windows to characterize the optical quality of these windows. An Air Force tri-bar target was viewed with an 8-in. telescope and a 5-in. telescope for the photographic and visual tests. A Zygo Mark IV interferometer was used for the interferometric tests. Results showed that the windows significantly degraded the performance of both telescopes. At least a 160% degradation in resolution was seen. The results of an independent test conducted by the Armstrong Aerospace Medical Research Laboratory are reviewed and found to corroborate the Aerospace results.


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    Title :

    Space Shuttle Overhead Windows, Optical Tests


    Contributors:
    K. P. Scott (author)

    Publication date :

    1991


    Size :

    79 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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