Optical 30 June 2008

From: Greg Roberts (grr@telkomsa.net)
Date: Wed Jul 02 2008 - 11:54:21 UTC

  • Next message: Alberto Rango: "4542 SATOBS 01 JUL 2008."

    Observations 30 June 2008:
    --------------------------------
    
    Cosatrak 1 (Computerised satellite Tracking System).
    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 80mm focal length f/2.8 Nikkon lens,integrating for 128 frames
    which is equivalent to a max exposure of 2.56 seconds per image.
    Field of view 3.9 x 3.0 degrees, limiting stellar magnitude +11
    
    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:
    ------------------------
    
    07816 75 043A   0433 F 20080630164357900 56 15 0849490-281209 39  +080 05
    07816 75 043A   0433 F 20080630164431500 56 15 0816510-371527 39  +075 05
    07816 75 043A   0433 F 20080630164537500 56 15 0703000-492345 39  +080 05
    21809 91 076E   0433 F 20080630164848300 56 15 0008000-732602 39  +085 05
    21809 91 076E   0433 F 20080630164858700 56 15 2345350-735528 39  +085 05
    21799 91 076C   0433 F 20080630165212200 56 15 0018510-744044 39  +065 05
    21799 91 076C   0433 F 20080630165316600 56 15 2125230-744627 39  +055 05
    21799 91 076C   0433 F 20080630165420200 56 15 1916360-654400 39  +055 05
    21808 91 076D   0433 F 20080630165212200 56 15 0033440-735142 39  +065 05
    21808 91 076D   0433 F 20080630165316600 56 15 2150120-745750 39  +055 05
    21808 91 076D   0433 F 20080630165420200 56 15 1932130-670828 39  +055 05
    14144 83 056D   0433 F 20080630170059700 56 15 1103090+195306 39  +085 05
    14144 83 056D   0433 F 20080630170150900 56 15 1113370+143821 39  +085 05
    14144 83 056D   0433 F 20080630170323100 56 15 1134440+030110 39  +080 05
    08836 76 038D   0433 F 20080630170533700 56 15 0908420-620800 39  +085 05
    08836 76 038D   0433 F 20080630170609500 56 15 0959050-594040 39  +080 05
    08836 76 038D   0433 F 20080630170647900 56 15 1050330-550910 39  +080 05
    23533 95 015A   0433 F 20080630171800100 56 15 2130130-633831 39  +065 05
    23533 95 015A   0433 F 20080630171906500 56 15 2006360-654154 39  +065 05
    23533 95 015A   0433 F 20080630172053200 56 15 1651540-555942 39  +055 05
    29522 06 050A   0433 F 20080630172755300 56 15 0722190-521356 39  +050 05
    29522 06 050A   0433 F 20080630172851600 56 15 0809590-391304 39  +050 05
    29522 06 050A   0433 F 20080630172958100 56 15 0845200-213300 39  +055 05
    20692 90 050D   0433 F 20080630173049300 56 15 0809110-241319 39  +075 05
    20692 90 050D   0433 F 20080630173234300 56 15 0755070-390910 39  +075 05
    20692 90 050D   0433 F 20080630173335700 56 15 0739120-482821 39  +070 05
    20642 90 050E   0433 F 20080630173049300 56 15 0808260-225325 39  +075 05
    20642 90 050E   0433 F 20080630173234300 56 15 0754460-374144 39  +075 05
    20642 90 050E   0433 F 20080630173335700 56 15 0739150-470642 39  +070 05
    20691 90 050C   0433 F 20080630173049300 56 15 0813070-223323 39  +075 05
    20691 90 050C   0433 F 20080630173234300 56 15 0800320-372550 39  +075 05
    20691 90 050C   0433 F 20080630173335700 56 15 0746050-465257 39  +070 05
    21798 91 082A   0433 F 20080630173820800 56 15 0735000-381947 39  +080 05
    21798 91 082A   0433 F 20080630173924200 56 15 0810100-245017 39  +075 05
    21798 91 082A   0433 F 20080630174037400 56 15 0836580-091720 39  +080 05
    90046 05 864A   0433 F 20080630175249500 56 15 0802110-093630 39  +080 05
    90046 05 864A   0433 F 20080630175434600 56 15 0818400-061338 39  +080 05
    90046 05 864A   0433 F 20080630175654100 56 15 0838010-015512 39  +080 05
    14143 83 056C   0433 F 20080630175859100 56 15 1015420-471258 39  +080 05
    14143 83 056C   0433 F 20080630175945200 56 15 1016220-554532 39  +080 05
    14143 83 056C   0433 F 20080630180107000 56 15 1012520-702956 39  +080 05
    14180 83 056G   0433 F 20080630180444800 56 15 1007200+010337 39  +085 05
    14180 83 056G   0433 F 20080630180559300 56 15 1012140-073605 39  +085 05
    14180 83 056G   0433 F 20080630180723900 56 15 1016590-191433 39  +080 05
    25991 99 067A   0433 F 20080630181523500 56 15 1229590-274009 39  +075 05
    25991 99 067A   0433 F 20080630181609600 56 15 1227500-073848 39  +075 05
    25991 99 067A   0433 F 20080630181726400 56 15 1223350+154034 39  +050 05
    21809 91 076E   0433 F 20080630183913300 56 15 0810110-392326 39  +030 05
    21799 91 076C   0433 F 20080630184306300 56 15 0838360-360807 39  +075 05
    21799 91 076C   0433 F 20080630184352400 56 15 0913140-320437 39  +065 05
    21799 91 076C   0433 F 20080630184441000 56 15 0953020-253836 39  +055 05
    21808 91 076D   0433 F 20080630184306300 56 15 0831330-371414 39  +075 05
    21808 91 076D   0433 F 20080630184352400 56 15 0906100-333501 39  +065 05
    21808 91 076D   0433 F 20080630184441000 56 15 0945590-273825 39  +060 05
    14144 83 056D   0433 F 20080630185435900 56 15 0928480-190518 39  +085 05
    14144 83 056D   0433 F 20080630185520900 56 15 0926440-235809 39  +075 05
    14144 83 056D   0433 F 20080630185715400 56 15 0916020-373344 39  +080 05
    23533 95 015A   0433 F 20080630190149300 56 15 0831110-342957 39  +065 05
    23533 95 015A   0433 F 20080630190227700 56 15 0850330-280239 39  +080 05
    28095 03 054A   0433 F 20080630192753700 56 15 1018490-104550 39  +045 05
    28095 03 054A   0433 F 20080630192850300 56 15 1015050-192206 39  +040 05
    28095 03 054A   0433 F 20080630192948400 56 15 1008090-291729 39  +040 05
    28097 03 054C   0433 F 20080630192753700 56 15 1020300-094519 39  +040 05
    28097 03 054C   0433 F 20080630192850300 56 15 1017050-181635 39  +030 05
    28097 03 054C   0433 F 20080630192948400 56 15 1010370-280921 39  +030 05
    
    Strays seen:
    --------------
    SL-8 R/B steady
    32284 07 053B   0433 F 20080630162912800 56 15 1613260-282843 39  +045 05
    Iridium 20 steady
    25577 98 074A   0433 F 20080630163740900 56 15 1051150+291542 39  +075 05
    Radarsat 2 steady
    32382 07 061A   0433 F 20080630165409200 56 15 1916030-665728 39  +035 05
    Titan 3 transtage  range 41030 kms
    10002 77 034C   0433 F 20080630171126900 56 15 1010040+121619 39  +085 05
    SL-8 R/B
    04370 70 028B   0433 F 20080630174358600 56 15 0715010-332936 39  +075 05
    Atlas centaur rocket regular flashing, range 11120 kms
    06779 71 116B   0433 F 20080630180444800 56 15 1009160+015738 39  +075 05
    Atlas 5 Centaur, range 8620 kms-steady during observation
    28473 04 048B   0433 F 20080630181609600 56 15 1231100-042915 39  +065 05
    
    Notes:
    ---------
    (1) Conditions rather variable- many fast moving cirrus bands but
    determined to track as getting frustrated by the continual cloud-
    this year seems to be worse than previous years.
    
    (2) Measuring took longer than usual due to the non-uniformity of the
    image scale. Whilst image quality was very good, there was pronounced
    field curvature near edges of field - rather disappointing for such an
    expensive lens with something like 15 lens components inside it. Also
    ghost reflections from stars brighter than about +3 mag - look like a
    satellite but moving opposite way to movement of star causing the
    reflection. Then problems with the control paddle for the DVD recorder
    - the SLOW STEP function most times failed to step despite pressing
    several times so much pressing required and hence time/patience lost.
    
    Cheers
    Greg
    
    
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