STS-133 spacewalker ground-based; new frames, processings and analyses

From: Ralf Vandebergh (
Date: Tue Mar 08 2011 - 09:33:45 UTC

  • Next message: Ralf Vandebergh: "STS-133 spacewalker ground-based; new frames, processings and analyses"

    Just released;  New frames, processing and analyses of this observation:
    Newly selected frames from the video sequence show a higher resolution view of the spacewalker and his position near the Columbus Laboratory.
    The comparing image mid, top is a NASA-tv screenshot from a camera on the docked Discovery from several minutes after the pass, while the  
    position of the astronaut was still comparable. Note that this picture is only usable to compare the approximate position of the astronaut and
    not for comparing the lighting conditions as the station was already in the Earth shadow. Also note that the view from the Shuttle camera shows
    another perspective, like you are using a wide-angle lens with the object close to the lens. The view from the telescope is like an enormous
    telephoto lens with the object in this case at a distance of 357.6 km. This difference in perspective causes a shift in visibility of the details.
    Ralf Vandebergh
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