Obs DSP20 01 April 2003

From: Greg Roberts (grr@iafrica.com)
Date: Wed Apr 02 2003 - 08:09:18 EST

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    Observations 01 April 2003:
    ----------------------------------
    
    Cosatrak 1 (Computerised satellite Tracking System), 1004x low
    light level CCD surveillance camera (0.003 lux) with 82mm focal
    length f/1.6 lens with focal reducer.
    
    Site 0433 : Longitude 18.51294 deg East, Latitude  33.94058 deg S,
    Elevation 10 metres - situated in Pinelands (Cape Town), South Africa
    
    Observations of DSP 20:
    
    26356 00 024A   0433 G 20030401223802200 17 15 1142443+050106 39 R+030 05
    26356 00 024A   0433 G 20030401223902500 17 15 1143421+050104 39 R+030 05
    26356 00 024A   0433 G 20030401224002700 17 15 1144450+050043 39 R+030 05
    
    Notes:
    ~~~~~~
    
    (1) Following information received from Mike McCants and Rainer Kracht I
        observed the geostationary satellite USA 149 aka DSP 20. This satellite
        is normally invisible in my equipment but was predicted to start
        flashing at around 22h38mUT for about two minutes. This took place as
        follows:
    
         Time (UT)    No. frames visible
         ---------    -----------------
        22h38m02.2s      1
        22 38 12.3       2
        22 38 22.3       2
        22 38 32.4       2
        22 38 42.4       3
        22 38 52.4       3
        22 39 02.5       3
        22 39 12.5       2
        22 39 22.5       2
        22 39 32.6       2
        22 39 42.6       2
        22 39 52.7       2
        22 40 02.7       2
    
        The flashes were of short duration and reached about magnitude +3.
        The video frame rate is 25 per second.
    
    (2) The other DSP above my horizon (DSP 15) could not be observed as
        neighbours house in way - he wasnt prepared to let me blow it up
        to remove the obstruction.
    
    (3) Many thanks to Mike and Rainer for alerting me - it was worth staying
        up late for it.
    
        Cheers
        Greg
    
    
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