Optical 31 Oct 2008

From: Greg Roberts (grr@telkomsa.net)
Date: Sat Nov 01 2008 - 13:57:10 UTC

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    Observations 31 October 2008
    --------------------------------------
    
    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 sesnitivity
    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 135mm focal length f/2.8 lens,integrating for 128 frames
    which is equivalent to a max exposure of 2.56 seconds maximum
    per image. Field of view 2.7 x 2.1 degrees.
    Individual frames are video time stamped with GPS derived signal.
    
    (2)Meade DSI Pro II Monochrome CCD camera without filters.
    using integration times of 20 sec min to 60 seconds maximum
    depending on brightness of sky in particular area.No image
    processing done but dark field applied.
    Used with 200mm focal length f/2.8 Nikkon telephoto lens,
    field of view 1.88 x 1.40 degrees. Can get to magnitude 13
    or so in less than 20 seconds exposure.
    Exposure time to nearest second inserted into image FITS header
    from PC clock which is automatically checked every minute against
    GPS 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:
    ---------------------------- 
    
    90073 07 569A   0433 P 20081031181433000 56 15 0156148+150314 39  +125 05
    90073 07 569A   0433 P 20081031181643000 56 15 0158216+150717 39  +125 05
    05204 71 039A   0433 P 20081031180021000 56 15 0143492+142953 39  +115 05
    05204 71 039A   0433 P 20081031181433000 56 15 0158094+145137 39  +115 05
    05204 71 039A   0433 P 20081031181643000 56 15 0200255+145408 39  +115 05
    96022 96 522A   0433 P 20081031194019000 56 15 2322098-044427 39  +105 05
    96022 96 522A   0433 P 20081031194331000 56 15 2325261-043912 39  +105 05
    96088 96 588A   0433 P 20081031200900000 56 15 0310101+081905 39  +115 05
    96088 96 588A   0433 P 20081031201250000 56 15 0313545+083224 39  +115 05
    96089 96 589A   0433 P 20081031201738000 56 15 2306323+085200 39  +120 05
    96089 96 589A   0433 P 20081031202221000 56 15 2311032+090330 39  +120 05
    09415 76 091A   0433 P 20081031181947600 56 15 0415310-225910 39  +060 05
    09415 76 091A   0433 P 20081031182031200 56 15 0434584-301234 39  +060 05
    09415 76 091A   0433 P 20081031182223400 56 15 0545230-460130 39  +066 05
    24680 96 072A   0433 P 20081031193304700 56 15 0629513-572822 39  +065 05
    24680 96 072A   0433 P 20081031193320700 56 15 0613064-565558 39  +060 05
    24680 96 072A   0433 P 20081031193337700 56 15 0554402-560642 39  +055 05
    24680 96 072A   0433 P 20081031193353300 56 15 0537268-550651 39  +053 05
    24680 96 072A   0433 P 20081031193410400 56 15 0518158-534136 39  +050 05
    24680 96 072A   0433 P 20081031193433300 56 15 0452220-511223 39  +047 05
    24680 96 072A   0433 P 20081031193453600 56 15 0429537-482309 39  +045 05
    24680 96 072A   0433 P 20081031193523900 56 15 0357496-425822 39  +043 05
    
    Strays seen:
    --------------
    EKRAN 10 geostationary, variable
    13878 83 016A   0433 P 20081031194857000 56 15 2126251-072712 39  +120 05
    13878 83 016A   0433 P 20081031195349000 56 15 2131009-071134 39  +120 05
    ARIANE 5 DEB, range 20920 kms, steady
    32296 07 056D   0433 P 20081031200900000 56 15 0312590+074305 39  +110 05
    SL-14 R/B
    23659 95 046C   0433 P 20081031175942000 56 15 0148150+141826 39  +045 05
    ATLAS CENTAUR ROCKET, range 4380 kms, variable
    15874 85 055B   0433 P 20081031181341300 56 15 0152484+154556 39  +055 05
    GLOBALSTAR M047 steady
    25772 99 031C   0433 P 20081031184040000 56 15 2211071+195459 39  +050 05
    COSMOS 1174  steady
    11765 80 030A   0433 P 20081031190254600 56 15 0148491+034717 39  +050 05
    SL-6 R/B(2) range 10990 kms, variable
    29261 06 030B   0433 P 20081031192121400 56 15 0230556+055556 39  +075 05
    COSMOS 732 , range 2270 kms , variable
    07820 75 045A   0433 P 20081031193433300 56 15 0446247-492318 39  +065 05
    COSMOS 1656  steady
    13755 85 042A   0433 P 20081031194448900 56 15 2123368-074236 39  +035 05
    COSMOS 1860 steady
    18122 87 052A   0433 P 20081031195510800 56 15 2131034-075230 39  +040 05
    THORAD AGENA D, steady
    04159 69 082AB  0433 P 20081031203449500 56 15 2020126+020740 39  +050 05
    
    
    Notes:
    -------
    (1) Evening looked good at start but soon became impossible to track
        with high cloud.
    
    (2) Not 100% confident about 90073 as difficult - variable to invisible
    
    (3) 96022 has slight variability
    
    
    Cheers
    Greg
    
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