Re: Photograph of flaring USA 129 (96-072A)

From: Bruce MacDonald (macdonalddevizes@tiscali.co.uk)
Date: Thu Sep 08 2005 - 17:42:53 EDT

  • Next message: Marco Langbroek: "Obs ML (4352), 8 Sept 2005: USA 129"

    Nice photo Marco!
    
    USA 129 can be a spectacular sight given the right sun-object-observer
    geometry.  I have noticed that it flares brightly when at high elevation and
    with my back to the sun, giving a nice full phase.  I found an interesting
    website run by a guy who images the ISS but he has also tried to image
    classified sats.  There are pics and video at this page:
    
    http://www.zen32156.zen.co.uk/usa129.htm
    
    The Lacrosse images show more evidence of structure:
    
    http://www.zen32156.zen.co.uk/lacrosse.htm
    
    Best wishes
    
    Bruce
    
    Bruce MacDonald
    COSPAR Site 2751
    Devizes, Wiltshire, UK
    51.3440 N 1.9849 W 125m (WGS84)
    
    Marco Langbroek wrote:
    
    
    >
    > Just 40 minutes ago SatTrackCam Leiden captured USA 129 (96-072A) while it
    was
    > flaring brightly in the zenith near 20:36:10 UTC:
    >
    >
    http://i19.photobucket.com/albums/b176/marcoaliaslama/satellites/USA129.jpg
    >
    > Maximum brightness of about mag -1.5 was a few seconds after the end of
    this
    > 10.7 second exposure, which shows it brightening rapidly. Very nice to see
    > visually! Observing conditions: clear but somewhat hazy.
    >
    > A second exposure starting at 20:36:40.8 UTC only shows a faint trail.
    >
    > Will start to measure the image right away, positions will follow later.
    
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