Nanosail movie tumbling in space

From: Ralf Vandebergh (ralf.vandebergh@home.nl)
Date: Tue Jun 07 2011 - 10:44:17 UTC

  • Next message: Tony Beresford: "Satobs jun 07 2011 at 8597"

    subject: movie of Nanosail tumbling in space
    
    Movie of Nanosail  made using frames taken 9 seconds apart. Only the very 
    sharpest frames are used, less is more. The result looks remarkable ;  this 
    must be the first movie showing the Sail actually tumbling in space. Note 
    that one rotation visible in the movie might actually be a compression of 
    several rotations which could not be individually recorded due to lost 
    frames, inevitable connected to the manually tracking method used with the 
    very high imaging scale.
    
    http://freeimagehosting.nl/pics/7a80e9eb09b62849cad939b33884ffa2.gif
    
    
    Note the irregularity of illumination of certain parts of the Sail which 
    could cause the sub-flashes observed by visual observers. To demonstrate how 
    the part of the pass, presented in the movie would
    look like for the naked-eye, I have artificially lowered the resolution to 
    spot-size, comparable with naked-eye view in the second smaller animation, 
    containing the same frames; we see indeed flashing.
    
    http://freeimagehosting.nl/pics/9cb8a10740c73fc0ad3d17b1e9e2e042.gif
    
    
    Best regards,
    
    Ralf Vandebergh
    http://ralfvandebergh.startje.be/vieuw.php?qid=328303
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