Optical 03 Dec 2008 Part 3

From: Greg Roberts (grr@telkomsa.net)
Date: Fri Dec 05 2008 - 11:34:23 UTC

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    Observations  03 Dec 2008 Part 3
    ---------------------------------------
    
    Cosatrak 1 (Computerised satellite Tracking System).
    Camera mount now carries two systems that can be operated
    together as two totally different sytems and computers used.
    Generally the DSI Pro II camera will be used for high altitude
    slow moving objects. Tests seem to indicate that its sensitivity
    is comparable to the MINTRON ( possibly better) but as its not
    possible (?) to time stamp to better than 1 second accuracy the
    time resolution is not good enough for LEO objects.
    
    (1) 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 50mm focal length f/1.8 lens,integrating for 128 fields
    which is equivalent to a max exposure of 2.56 seconds maximum
    per image. Field of view 6.8 x 5.4 degrees.
    Individual frames are video time stamped with GPS derived signal.
    
    
    Site 0433 : Longitude 18.51294 deg East, Latitude  33.94058 deg S,
    Elevation 10 metres-situated in Pinelands (Cape Town),South Africa
    
    
    For CLASSFD.TLE:
    --------------------------
    
    25615 98 055C   0433 G 20081203184412500 56 15 0239450+265347 39  +070 05
    25615 98 055C   0433 G 20081203184522000 56 15 0300450+105137 39  +060 05
    25615 98 055C   0433 G 20081203184628500 56 15 0332270-120718 39  +050 05
    25615 98 055C   0433 G 20081203184721600 56 15 0412470-334626 39  +030 05
    25615 98 055C   0433 G 20081203184805100 56 15 0501570-490202 39  +065 05
    24680 96 072A   0433 G 20081203192344100 56 15 0830120-365319 39  +050 05
    24680 96 072A   0433 G 20081203192350100 56 15 0824470-360339 39  +050 05
    24680 96 072A   0433 G 20081203192353500 56 15 0821450-353224 39  +050 05
    28384 04 034A   0433 G 20081203195119100 56 15 1954320-255651 39  +040 05
    28384 04 034A   0433 G 20081203195411300 56 15 2138340-132700 39  +070 05
    28384 04 034A   0433 G 20081203195733900 56 15 2306290+024254 39  +060 05
    28384 04 034A   0433 G 20081203200104300 56 15 0002150+143947 39  +065 05
    
    
    Notes:
    ---------
    
    (1) Classified.TLE sats observed with the video system
    
    (2) USA 129 less than 10 degrees elevation before shadow entry-poor sky
        area due to city lights etc so perhaps not as accurate as usual.
    
    (3) Will report the approximate 2 -3 dozen strays tomorrow-hopefully
    
    Cheers
    Greg
    
    
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