Optical 09 Dec 2008 Part 2

From: Greg Roberts (grr@telkomsa.net)
Date: Wed Dec 10 2008 - 11:29:58 UTC

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    Observations 09 Dec 2008 Part1
    --------------------------------------
    
    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 sensitivity
    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 50mm focal length f/1.8 lens,integrating for 128 fields
    which is equivalent to a max exposure of 2.56 seconds maximum
    per image. Field of view 6.8 x 5.4 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,
    Elevation 10 metres-situated in Pinelands (Cape Town),South Africa
    
    For CLASSFD.TLE:
    --------------------------
    32287 07 054A   0433 T 20081209185205000 56 15 0056460+083858 39  +120 05
    32287 07 054A   0433 T 20081209185413000 56 15 0058531+083841 39  +070 05
    23855 96 026A   0433 T 20081209184339000 56 15 0056214+050326 39  +105 05
    23855 96 026A   0433 T 20081209184745000 56 15 0059586+051206 39  +105 05
    90022 04 764A   0433 T 20081209190358000 56 15 0126244-032151 39  +120 05
    90022 04 764A   0433 T 20081209190626000 56 15 0128579-031300 39  +120 05
    90048 05 605B   0433 T 20081209191519000 56 15 0256329+020417 39  +105 05
    90048 05 605B   0433 T 20081209191831000 56 15 0259427+021210 39  +105 05
    90049 05 605B   0433 T 20081209192043000 56 15 0352284-002332 39  +105 05
    90049 05 605B   0433 T 20081209192354000 56 15 0355425-002048 39  +105 05
    90008 00 838A   0433 T 20081209193135000 56 15 0328232-013537 39  +100 05
    90008 00 838A   0433 T 20081209193446000 56 15 0331355-012845 39  +100 05
    90066 05 667A   0433 T 20081209195703000 56 15 0619037+071832 39  +110 05
    90066 05 667A   0433 T 20081209195931000 56 15 0621330+072130 39  +110 05
    28117 03 057A   0433 T 20081209200407000 56 15 0629338+071924 39  +105 05
    28117 03 057A   0433 T 20081209200634000 56 15 0632027+071911 39  +105 05
    25967 99 063A   0433 T 20081209200819000 56 15 0639147+070202 39  +115 05
    25967 99 063A   0433 T 20081209201046000 56 15 0641422+070236 39  +115 05
    29240 06 024A   0433 T 20081209203312000 56 15 0147072+035706 39  +110 05
    29240 06 024A   0433 T 20081209203834000 56 15 0152451+035858 39  +110 05
    22915 93 074A   0433 T 20081209204220000 56 15 0604208+062724 39  +105 05
    22915 93 074A   0433 T 20081209204527000 56 15 0607265+063123 39  +105 05
    26575 00 065A   0433 T 20081209204930000 56 15 0059582+052003 39  +120 05
    26575 00 065A   0433 T 20081209205116000 56 15 0101475+051933 39  +120 05
    27691 03 008A   0433 T 20081209205359000 56 15 0629278+051806 39  +110 05
    27691 03 008A   0433 T 20081209205756000 56 15 0633258+051800 39  +110 05
    19976 89 035A   0433 T 20081209205945000 56 15 0503219+103534 39  +100 05
    19976 89 035A   0433 T 20081209210235000 56 15 0505438+103739 39  +100 05
    14675 84 009A   0433 T 20081209211518000 56 15 0234022+111002 39  +105 05
    14675 84 009A   0433 T 20081209211659000 56 15 0235354+111215 39  +105 05
    
    Strays seen:
    --------------
    GALS 1 geostationary
    22963 94 002A   0433 T 20081209191831000 56 15 0300449+023856 39  +120 05
    ASTRA 1C geostationary
    22653 93 031A   0433 T 20081209203312000 56 15 0147280+033443 39  +120 05
    ATLANTIC BIRD 1
    27508 02 040A   0433 T 20081209204805000 56 15 0057061+051455 39  +120 05
    INTELSAT 904  geostationary very close to DSCS 3-13 #27691
    27380 02 007A   0433 T 20081209205359000 56 15 0630164+051839 39  +110 05
    27380 02 007A   0433 T 20081209205756000 56 15 0634140+051839 39  +110 05
    
    Notes:
    -------
    (1) Worst conditions Ive ever tried to observe. Problems were
        (a) bright moon which prevented exposures longer than about 15-20 sec
        (b) cirrus
        (c) heavy smoke above Cape Town caused by big fires on local
            mountains
    
    (2) If DSCS 3-12 (#26575) positions are suspect then please discard -
        rather too faint for conditions.
    
    (3) Still to report observations made with video system- includes
        SDS-3F4 and #90040. Conditions may have been too poor for a decent
        video in most cases.
    
    Cheers
    Greg
    
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