The removal of the lens induced vignetting from a selected sample of the Apollo low light level photographs is discussed. The methods used were developed earlier. A study of the effect of noise on vignetting removal and the comparability of the Apollo 35mm Nikon lens vignetting was also undertaken. The vignetting removal was successful to about 10% photometry, and noise has a severe effect on the useful photometric output data. Separate vignetting functions must be used for different flights since the vignetting function varies from camera to camera in size and shape. (Author)


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    Title :

    Image Processing and Data Reduction of APOLLO Low Light Level Photographs


    Contributors:

    Publication date :

    1975


    Size :

    37 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English