Optical 21 May 2013

From: Greg Roberts (grr@telkomsa.net)
Date: Wed May 22 2013 - 12:05:29 UTC

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    Observations 21 May 2013
    ------------------------------------
    
    Cosatrak 1 (Computerised satellite Tracking System).
    
    FLI ML8300M CCD camera with mechanical shutter + Trimble GPS
    
    Used with 135mm focal length f/2.8 TAMRON lens.
    Field of view 7.6 x 5.7 degrees. Image scale 16.1 arc sec/pixel
    Some images processed and measured manually whilst remainder
    automatically using APEX.
    
    Site 0433 : Longitude 18.51294 deg East, Latitude -33.94058 deg,
    Elevation 10 metres-situated in Pinelands (Cape Town),South Africa
    
    FOR CLASSFD.TLE:
    ------------------------------
    05679 71 110B   0433 F 20130521164518737 16 15 0631546-544642 28
    05679 71 110B   0433 F 20130521164636840 16 15 0523354-774805 28
    05679 71 110B   0433 F 20130521164800752 16 15 2206108-814337 28
    21808 91 076D   0433 F 20130521165224106 16 15 1222013+180343 28
    21808 91 076D   0433 F 20130521165325335 16 15 1243029+105241 28
    21808 91 076D   0433 F 20130521165428446 16 15 1306441+025950 28
    21809 91 076E   0433 F 20130521165628070 16 15 1118372+332146 28
    21809 91 076E   0433 F 20130521165745961 16 15 1141271+261107 28
    21809 91 076E   0433 F 20130521165909516 16 15 1208523+170540 28
    25724 99 023A   0433 F 20130521170111661 16 15 0805401+011925 68
    25724 99 023A   0433 F 20130521170125333 16 15 0820272+010804 49
    25724 99 023A   0433 F 20130521170157897 16 15 0859057+004334 38
    25724 99 023A   0433 F 20130521170210733 16 15 0915121+003528 19
    25724 99 023A   0433 F 20130521170310314 16 15 1034531+001254 89
    25724 99 023A   0433 F 20130521170322874 16 25 1051737+001188 19
    28637 05 011B   0433 F 20130521174456937 16 15 1009434-511909 28
    28637 05 011B   0433 F 20130521174500010 16 15 1008349-495744 29
    28637 05 011B   0433 F 20130521174504586 16 15 1006527-475200 29
    28637 05 011B   0433 F 20130521174507668 16 15 1005523-462631 28
    32379 07 060B   0433 F 20130521172140688 16 15 1220515-673216 18
    32379 07 060B   0433 F 20130521172658833 16 25 1331416-721636 29
    32379 07 060B   0433 F 20130521172703878 16 25 1343081-731773 19
    32379 07 060B   0433 F 20130521172708871 16 15 1355072-741158 49
    32379 07 060B   0433 F 20130521172713903 16 25 1408677-750386 28
    
    NOTES:
    --------
    (1) Changed optical system to wide angle 7.6 x 5.7 degrees - can
        record stars down to mag +12 with 1 second exposures or less.
    
    (2) Tried using APEX again on some LEO sats - appears to work
        very well - the advantage of this system is that I do not need to
        identify the star field so even if the satellites is somewhat "off
        time" APEX will identify the field and process the observation.
    
    (3) Stopped by mist then cloud. Seeing poor - 25 arc seconds.
    
    Cheers
    Greg
    
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