Optical 25 March 2011

From: Greg Roberts (grr@telkomsa.net)
Date: Sat Mar 26 2011 - 11:52:30 UTC

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

    Observations 25 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 NIKKON telephoto lens,approximate focal length 100mm
    and operatiung at f/2.8,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. Recorded on DVD for later measuring.
    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:
    -------------------------
    FIA 1 steady
    37162 10 046A   0433 F 20110325172037400 56 15 0849154-423604 39
    37162 10 046A   0433 F 20110325172106900 56 15 0819477-515218 39
    37162 10 046A   0433 F 20110325172235700 56 15 0504286-711903 39
    USA 202 geostationary
    33490 09 001A   0433 F 20110325173101900 56 15 0852387+075503 39  +075 05
    SBSS 1  variable
    37168 10 048A   0433 F 20110325180104400 56 15 1414212-471841 39  +070 05
    37168 10 048A   0433 F 20110325180126200 56 15 1438177-504815 39  +070 05
    DMSP B5D2-8 variable
    23533 95 015A   0433 F 20110325180705900 56 15 0037226-602705 39  +070 05
    23533 95 015A   0433 F 20110325180808600 56 15 0151003-492940 39  +075 05
    23533 95 015A   0433 F 20110325180902400 56 15 0232402-362537 39  +075 05
    23533 95 015A   0433 F 20110325180953900 56 15 0258589-224906 39  +080 05
    OTV-2 bright and steady
    37375 11 010A   0433 F 20110325181810200 56 15 0109250-485607 39  +030 05
    37375 11 010A   0433 F 20110325181838100 56 15 0131299-572415 39  +030 05
    37375 11 010A   0433 F 20110325181900700 56 15 0211350-665532 39  +025 05
    37375 11 010A   0433 F 20110325181913600 56 15 0305181-731103 39  +025 05
    37375 11 010A   0433 F 20110325181926400 56 15 0513064-782016 39  +020 05
    37375 11 010A   0433 F 20110325181939200 56 15 0832454-770003 39  +080 05
    NOSS 2-1 (D)
    20692 90 050D   0433 F 20110325182145000 56 15 0946464+272449 39  +045 05
    20692 90 050D   0433 F 20110325182249000 56 15 1006206+205308 39  +040 05
    20692 90 050D   0433 F 20110325182423600 56 15 1038409+095759 39  +030 05
    NOSS 2-1 (C)
    20691 90 050C   0433 F 20110325182145000 56 15 0947417+284305 39  +045 05
    20691 90 050C   0433 F 20110325182249000 56 15 1006483+222235 39  +040 05
    20691 90 050C   0433 F 20110325182423600 56 15 1038190+114434 39  +030 05
    NOSS 2-1 (E)
    20642 90 050E   0433 F 20110325182145000 56 15 0945412+285604 39  +050 05
    20642 90 050E   0433 F 20110325182249000 56 15 1004587+223618 39  +040 05
    20642 90 050E   0433 F 20110325182423600 56 15 1036459+115547 39  +030 05
    NOSS 3-4 (A)
    31701 07 027A   0433 F 20110325182634900 56 15 0154189-301253 39  +065 05
    31701 07 027A   0433 F 20110325182709700 56 15 0212522-274346 39  +055 05
    31701 07 027A   0433 F 20110325182751400 56 15 0235440-240225 39  +045 05
    NOSS 3-4 (C)
    31708 07 027C   0433 F 20110325182634900 56 15 0151161-305028 39  +060 05
    31708 07 027C   0433 F 20110325182709700 56 15 0209479-282715 39  +055 05
    31708 07 027C   0433 F 20110325182751400 56 15 0232379-245315 39  +045 05
    DMSP F16
    28054 03 048A   0433 F 20110325183150300 56 15 0132291-573638 39  +075 05
    28054 03 048A   0433 F 20110325183241500 56 15 0226435-473417 39  +070 05
    28054 03 048A   0433 F 20110325183350700 56 15 0313287-300133 39  +070 05
    NOSS 2-3 (E)
    23936 96 029E   0433 F 20110325183444300 56 15 0418129+083851 39  +075 05
    23936 96 029E   0433 F 20110325183503200 56 15 0429213+042921 39  +075 05
    23936 96 029E   0433 F 20110325183526300 56 15 0442446+163350 39  +075 05
    NOSS 2-3 (C)
    23908 96 029C   0433 F 20110325183444300 56 15 0417475+085825 39  +045 05
    23908 96 029C   0433 F 20110325183503200 56 15 0428492+123051 39  +045 05
    23908 96 029C   0433 F 20110325183526300 56 15 0442052+164937 39  +045 05
    DMSP F18 short track before shadow entry
    35951 09 057A   0433 F 20110325190540400 56 15 1721063-651819 39  +070 05
    35951 09 057A   0433 F 20110325190604500 56 15 1658056-665257 39  +070 05
    
    STRAYS SEEN
    ------------------
    SL-14 R/B  variable
    19852 89 018B   0433 F 20110325190122200 56 15 1707432-670736 39  +065 05
    COSMOS 627 variable
    07008 73 109A   0433 F 20110325175500200 56 15 0154126-071414 39  +070 05
    ATLAS 3A CENT R/B range 2400 kms steady
    28185 04 007B   0433 F 20110325172907100 56 15 0740274+050418 39  +035 05
    
    
    Notes:
    -------------
    (1) No magnitude estimate for FIA 1 as twilight sky too bright
    
    (2) ATLAS 3A Cent R/B #28185 had epoch perigee of 135 kms and apogee
        10115 kms so rapidly decaying
    
    (3) OTV-2  nice and steady - cant ever recall seeing the OTV's varying.
        Last point was well inside earths shadow.
    
    (4) NOSS 2-1 triplet - the only triplets still flying in formation ?
    
    (5) NOSS 2-3 (E) a great deal fainter than companion NOSS 2-3 (C) -
        normally (?) difference is never more than a magnitude or so.
    
    Cheers
    Greg
    
    
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