Japanese CCD imagery scanning for geosats

From: Ed Cannon (ecannon@mail.utexas.edu)
Date: Fri Mar 04 2005 - 22:51:57 EST

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    Optical Scanning Pictures of Geosynchronous Orbit - "Scanning 
    pictures were obtained, by using an optical telescope, for 
    the geosynchronous orbital arc visible from Kashima Space 
    Communications Center." (April 2001 through September 2004)
    
    http://www2.nict.go.jp/ka/control/geosurvey/geoindex.html
    
    At the foot of the page, below the links to the imagery, it says:  
    
    "Scanning Method
    
    "One set of scanning pictures is obtained in one night.  Scanning 
    observation is planned so that the line of sight of the telescope 
    points to a fixed right ascension.
    
    "In order to see whether a satellite is stationary, or to see its 
    drift motion if it was non-stationary, we need two pictures of 
    different times. This is the reason why the scanning is repeated 
    over two successive nights."
    
    Each image is fixed on one spot, with stars trailing.
    
    Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA
    
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