Optical 29 March 2011

From: Greg Roberts (grr@telkomsa.net)
Date: Wed Mar 30 2011 - 11:09:59 UTC

  • Next message: Ted Molczan: "Updated X-37B OTV 2-1 elements"

    Observations 29 Mar 2011
    -------------------------------------
    
    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.
    
    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 ~100mm focal length f/2.8 lens,integrating for 128 fields
    which is equivalent to a max exposure of 2.56 seconds maximum
    per image, but dependent on sky brightness. Field of view
    4.3 x 3.2 degrees.
    Individual frames are video time stamped with GPS derived signal.
    Images processed and measured manually.
    
    
    Site 0433 : Longitude 18.51294 deg East, Latitude -33.94058 deg,
    Elevation 10 metres-situated in Pinelands (Cape Town),South Africa
    
    FOR CLASSFD.TLE:
    -------------------------
    NOSS 2-1(D)
    20692 90 050D   0433 F 20110329172452400 56 15 1314245-310738 39  +070 05
    NOSS 2-1(C)
    20691 90 050C   0433 F 20110329172452400 56 15 1310497-300347 39  +055 05
    NOSS 2-1(E)
    20642 90 050E   0433 F 20110329172452400 56 15 1309573-295739 39  +055 05
    OFEQ 7
    31601 07 025A   0433 F 20110329174056900 56 15 1317151-334449 39  +055 05
    31601 07 025A   0433 F 20110329174110900 56 15 1309578-363033 39  +050 05
    31601 07 025A   0433 F 20110329174130100 56 15 1257049-410441 39  +045 05
    31601 07 025A   0433 F 20110329174141900 56 15 1246392-442706 39  +045 05
    31601 07 025A   0433 F 20110329174217600 56 15 1147366-573217 39  +050 05
    SBSS 1
    37168 10 048A   0433 F 20110329174926500 56 15 1429322-430125 39
    37168 10 048A   0433 F 20110329174951100 56 15 1452008-464012 39
    37168 10 048A   0433 F 20110329175006700 56 15 1507056-483914 39
    OTV 2-1
    37375 11 010A   0433 F 20110329175639700 56 15 0442247+222302 39  +060 05
    37375 11 010A   0433 F 20110329175652300 56 15 0505325+255906 39  +060 05
    37375 11 010A   0433 F 20110329175703800 56 15 0526550+290241 39  +055 05
    37375 11 010A   0433 F 20110329175716600 56 15 0551219+321120 39  +056 05
    37375 11 010A   0433 F 20110329175752400 56 15 0659491+385619 39  +055 05
    USA 200
    32706 08 010A   0433 F 20110329175954700 56 15 0406084+013117 39  +075 05
    32706 08 010A   0433 F 20110329180103200 56 15 0407240-011959 39  +075 05
    32706 08 010A   0433 F 20110329180200900 56 15 0408215-040039 39  +075 05
    
    Strays seen:
    -------------------
    METEOR 2-18
    19851 89 018A   0433 F 20110329172140600 56 15 0929127+184738 39  +050 05
    FENGYUN 1 B variable
    20788 90 081A   0433 F 20110329172709300 56 15 1310190-342906 39  +055 05
    THOR AGENA D DEB variable - mostly faint
    04614 70 025S   0433 F 20110329172852000 56 15 1304035-335321 39  +065 05
    SL-8 R/B steady
    11681 80 007B   0433 F 20110329173057300 56 15 1305499-324607 39  +050 05
    SL-8 R/B
    06708 73 042B   0433 F 20110329174141900 56 15 1249426-451052 39  +050 05
    SL-8 R/B variable
    28522 05 002B   0433 F 20110329175341800 56 15 0434490+220535 39  +065 05
    
    NOTES:
    --------
    
    (1) Early end of observing session due to sudden arrival of clouds
        which stayed.
    
    (2) OFEQ 7 running about 41 seconds early on 11 day old elements.Looks
        like most of the OFEQ satellites do frequent small orbit changes?
    
    (3) Although I havent checked I suspect this is the end of my observing
        window for evening passes of OTV 2-1 so will now change the optical
        set-up and return to doing high altitude objects.
    
    Cheers
    Greg
    
    
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