Optical 24 May 2012

From: Greg Roberts (grr@telkomsa.net)
Date: Fri May 25 2012 - 14:07:08 UTC

  • Next message: Kevin Fetter: "May 25 obs"

    Observations 24 MAY 2012
    ----------------------------
    
    Cosatrak 1 (Computerised satellite Tracking System).
    
    FLI ML8300M CCD camera with mechanical shutter + Trimble GPS
    
    Used with TAMRON AF 135mm f/2.8 fitted with IR blocking filter.
    Field of view ~7.6 x 5.7 degrees.
    Time is accurate to within 50 milliseconds.
    
    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 P 20120524180511528 55 15 1152530+371120 19
    05679 71 110B   0433 P 20120524180541923 55 15 1203310+333420 19
    05679 71 110B   0433 P 20120524180630658 55 15 1222400+263844 19
    05681 71 110D   0433 P 20120524171804738 55 15 0524090-290447 19
    05681 71 110D   0433 P 20120524172005580 55 15 0640520-091608 19
    05682 71 110E   0433 P 20120524164529881 55 15 0650540-351927 19
    05682 71 110E   0433 P 20120524164757063 55 15 0847300+050806 19
    05682 71 110E   0433 P 20120524164923924 55 15 0929450+232059 19
    14728 84 012C   0433 P 20120524181233187 55 15 1147230+302600 19
    14728 84 012C   0433 P 20120524181257449 55 15 1153510+281621 19
    14728 84 012C   0433 P 20120524181416193 55 15 1215500+201508 19
    20691 90 050C   0433 P 20120524170331756 55 15 0413140-415426 19
    20691 90 050C   0433 P 20120524170422695 55 15 0358290-480142 19
    20692 90 050D   0433 P 20120524170523758 55 15 0357060-472109 19
    20692 90 050D   0433 P 20120524170604768 55 15 0342150-515613 19
    20642 90 050E   0433 P 20120524170625323 55 15 0358320-465723 19
    20642 90 050E   0433 P 20120524170655740 55 15 0347320-503040 19
    22519 92 086C   0433 P 20120524191047117 55 15 0651230-670436 19
    22519 92 086C   0433 P 20120524191216794 55 15 0658070-712921 19
    22519 92 086C   0433 P 20120524191708194 55 15 1018170-881246 19
    23893 96 029A   0433 P 20120524185753924 55 15 0600380-360733 19
    23893 96 029A   0433 P 20120524190018065 55 15 0548300-463835 19
    23893 96 029A   0433 P 20120524190158968 55 15 0532270-543822 19
    25746 99 028C   0433 P 20120524190437133 55 15 0606070-295223 19
    25746 99 028C   0433 P 20120524190627709 55 15 0635440-254236 19
    25746 99 028C   0433 P 20120524190748455 55 15 0656270-215916 19
    28054 03 048A   0433 P 20120524173415213 55 15 0338120-724358 19
    28054 03 048A   0433 P 20120524173610478 55 15 0647140-480331 19
    28054 03 048A   0433 P 20120524173747277 55 15 0733390-145225 19
    35938 09 052B   0433 P 20120524193432584 55 15 0928312+104941 19
    35938 09 052B   0433 P 20120524193503585 55 15 0933380+072513 19
    35938 09 052B   0433 P 20120524193522183 55 15 0936410+051522 19
    38109 12 014A   0433 P 20120524165454141 55 15 1457160+034551 19
    38109 12 014A   0433 P 20120524165655970 55 15 1144156-122915 19
    38109 12 014A   0433 P 20120524170040542 55 15 1404073-681548 19
    
    STRAYS SEEN:
    --------------------
    14679 84 010A   0433 P 20120524181233187 55 15 1147550+301802 19
    21090 91 007B   0433 P 20120524180943117 55 15 1127250+371749 19  +050 05
    13649 82 109B   0433 P 20120524181037852 55 15 1116010+372548 19  +050 05
    37931 11 068B   0433 P 20120524190437133 55 15 0604570-271107 19
    
    NOTES:
    ------
    (1)Basically wanted to check how useful an Infra-red blocking filter
       would be. First tests indicate its worth adding.
    
    (2)Several geostationary satellites still to report. I have been able
       to get APEX to solve most of the images - 9 out of 13 so far but
       still a lot of work as each field contains numerous satellites-
       up to 20 or more and each one's identity has to be checked out.
    
    (3) Lets see-- correct year - yes its 2012
        correct day  --- yes for last night 24 May 2012
    
        but I still managed to make a **** !!
    
        I accidentally had the camera lens at f/5.6 instead of f/2.8 -- 
        wondered why stars were fainter than normal and put it down to
        the infra red filter.
        Only after finishing observing I checked the camera lens to see
        if any misting over and then saw that the camera was set at
        f/5.6 which meant I was loosing about 2 magnitudes :-(((
        DUH....
    
    Cheers
    Greg 
    
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