Re: Detailed video of Lacrosse 5 and disappearance trick

From: Satcom (john@satcom.freeserve.co.uk)
Date: Wed Feb 15 2012 - 10:15:50 UTC

  • Next message: Russell Eberst: "2012FEB14-15.OBS"

    Way back in 2005 , just four days after L5 launched I recall imaging the 
    satellite and rocket body  before the orbit was lifted as both passed over 
    the UK.
    
    My webpage has long since gone , but I have recovered a couple of images 
    from an old hard drive as I recall seeing something similar to the oblong 
    shape at the time.
    
    The pics can be seen here..
    
    http://satcomuk.yolasite.com/  on the Lacrosse 5 archive tab
    
    Obviously the quality of the images is no where near that of Thierry's but , 
    there is that similarity
    
    Regards
    
    John
    
    
    ----- Original Message ----- 
    From: "Allen Thomson" <thomsona@flash.net>
    To: <SeeSat-L@satobs.org>; "Thierry Legault" <legault@club-internet.fr>
    Sent: Tuesday, February 14, 2012 9:17 PM
    Subject: Re: Detailed video of Lacrosse 5 and disappearance trick
    
    
    >
    >
    >> The shape is quite strange, with a rectangular silhouette
    >> and an  outgrowth. Two other videos taken several weeks before,
    >> although in  different passage angle, show similar apparent rectangular
    >> shape.
    >
    > Very curious. The obvious speculation would be that the mesh parabolic 
    > dish antenna of the first Lacrosses was replaced by a rectangular planar 
    > antenna on Lacrosse 5.  A planar and specularly reflective antenna might 
    > explain the disappearance trick -- modeling sun angles on the satellite 
    > for this pass might be informative.
    > _______________________________________________
    > Seesat-l mailing list
    > http://mailman.satobs.org/mailman/listinfo/seesat-l 
    
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