Optical 19 Dec 2006

From: Greg Roberts (grr@telkomsa.net)
Date: Tue Dec 19 2006 - 17:26:52 EST

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    Observations 19 Dec 2006:
    --------------------------------
    
    Cosatrak 1 (Computerised satellite Tracking System).
    MINTRON low light level CCD surveillance camera (0.005 lux typical
    in non integration mode) and 0.00005 lux in STARLIGHT mode with 128
    frame integration.
    
    Used with 50mmm focal length f/1.8 lens,integrating for 96 frames
    which is equivalent to an exposure of 1.92 seconds per image.
    
    Site 0433 : Longitude 18.51294 deg East, Latitude  33.94058 deg S,
    Elevation 10 metres - situated in Pinelands (Cape Town), South Africa
    
    
    Unknown - possibly USA 186?
    ----------------------------------
    
    28888 05 042A   0433 G 20061219195627900 56 15 1014300-400625 39  +075 05
    28888 05 042A   0433 G 20061219195640200 56 15 1004000-385816 39  +072 05
    28888 05 042A   0433 G 20061219195653400 56 15 0952010-373605 39  +075 05
    
    Notes:
    -------
    (1) Tried another plane search for USA 186 and this is the only unknown
        seen- the other satellites were all identified. This was a difficult
        observation as the elevation was only 10 degrees and bright city lit
        sky so was almost on limit of system- was quite easy in "real time"
        on the monitor but a bit more difficult on the DVD recording. The
        middle position is the best one whilst the two extremes may be a
        little out in position as it was a bit difficult to see where the
        trail of each exposure ended. The track angle is what I expected it
        to be. It showed slight variability.
    
    Cheers
    Greg
    
    
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