Obs 02 Feb 2006

From: Greg Roberts (grr@iafrica.com)
Date: Fri Feb 03 2006 - 11:54:24 EST

  • Next message: Björn Gimle: "Re: Obs 02 Feb 2006"

    Observations 02 Feb 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 135mm focal length f/2.8 lens,integrating for 128 frames
    which is equivalent to an exposure of 2.56 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
    
    For CLASSFD.TLE:
    ----------------------
    
    05682 71 110E   0433 T 20060202185618900 56 15 0050027-022703 39  +095 05
    05682 71 110E   0433 T 20060202190040700 56 15 2314190-611830 39  +090 05
    05682 71 110E   0433 T 20060202190122900 56 15 2218220-681658 39  +075 05
    90045 05 862B   0433 T 20060202190340300 56 15 0352234-003038 39  +105 05
    90045 05 862B   0433 T 20060202190859100 56 15 0400237-003154 39  +105 05
    90013 03 564A   0433 T 20060202193837700 56 15 0738370+130542 39  +085 05
    90033 05 558A   0433 T 20060202194738100 56 15 0503110+053242 39  +110 05
    24680 96 072A   0433 T 20060202201032200 56 15 1355225-565321 39  +070 05
    24680 96 072A   0433 T 20060202201153000 56 15 1241031-544212 39  +055 05
    24680 96 072A   0433 T 20060202201320000 56 15 1114589-461225 39  +050 05
    24680 96 072A   0433 T 20060202201406100 56 15 1033297-381502 39  +045 05
    24680 96 072A   0433 T 20060202201452200 56 15 0957314-275728 39  +065 05
    90046 05 864A   0433 T 20060202201746200 56 15 0402423+305351 39  +100 05
    90046 05 864A   0433 T 20060202202053000 56 15 0406160+291246 39  +100 05
    90046 05 864A   0433 T 20060202203903700 56 15 0431310+143723 39  +085 05
    90042 05 828A   0433 T 20060202202457900 56 15 0923006+065805 39  +110 05
    28888 05 042A   0433 T 20060202203556800 56 15 1232561-700914 39  +065 05
    28888 05 042A   0433 T 20060202203658300 56 15 0958565-621819 39  +060 05
    90041 05 775A   0433 T 20060202212758500 56 15 0930467+130003 39  +090 05
    
    Strays seen:
    ----------------
    
    Ariane 42L rocket
    26299 00 020B   0433 T 20060202204451900 56 15 0733465+074415 39  +075 05
    SL-14 rocket variable
    22283 92 092B   0433 T 20060202203312000 56 15 1552349-645855 39  +080 05
    NSS703 (Intelsat)
    23305 94 064A   0433 T 20060202202457900 56 15 0923528+052043 39  +110 05
    Delta 1 rocket
    10517 77 118B   0433 T 20060202200238900 56 15 0344513+232426 39  +055 05
    Globalstar M041
    25650 99 012B   0433 T 20060202191043300 56 15 0928242+011456 39  +065 05
    
    
    Notes:
    ---------
    (1) Purpose of the session was to try and evaluate a new lens. However
        conditions were extremely poor due to very poor transparency and much
        cloud which eventually forced me to close down - consequently the
        lens has still to be evaluated. Image quality appears better than my
        usual 145mm f/2.5 lens and field curvature is also less pronounced
        at the edges. Magnitude wise I could only see to about magnitude +11
        but all the satellites tracked looked somewhat fainter than what I
        am used to so there is still hope magnitude wise.
    
    (2) USA186 was unusually faint and appeared to be variable-something
        I have not noticed before, however this may be due to the
        transparency and /or thin cloud?
    
    (3) Some satellites I should have seen I did not see.
    
    (4) All in all a frustrating session which raised my blood pressure a
        few points!
    
    Cheers
    Greg
    
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