Re: Progress M-10M rocket tumbling (HR) observation

From: Ralf Vandebergh (ralf.vandebergh@home.nl)
Date: Thu May 19 2011 - 22:01:14 UTC

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    I have added the following to the observation;
    
    Interesting is, that the tumbling period of the rocket  not seems to be very high for this time, as the rocket shows only slow change of attitude in the frames. In earlier observations, a much faster period was recorded. We could conclude that this is a very varying aspect, depending on many factors.
    
    Ralf
    
    
    From: Ralf Vandebergh 
    Sent: Wednesday, May 18, 2011 3:29 PM
    To: SeeSat-L@satobs.org 
    Subject: Progress M-10M rocket tumbling (HR) observation
    
    Hi all,
    
    This is one of my best accomplishments to data (I’m not saying that often). The observation shows tumbling of the upper stage
    for the Progress M-10M, launched April 27. The images are taken one day after launch. Angular speed of the rocket was about
    2 degrees per second which is very fast. Tracking is still managed fully manually. 
    
    The movements visible in the observation are pure rocket-own and not related to seeing, tracking or other technical issues.
    The second animation (to the right shows only a small moment in this fast pass to show that the frames show same attitude
    and shape, only air turbulence is visible.
    
    http://www.startje.be//vieuw.php?qid=378678
    
    Best regards,
    
    Ralf Vandebergh
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