Optical 20 Sept 2009- 2

From: Greg Roberts (grr@telkomsa.net)
Date: Mon Sep 21 2009 - 09:04:56 UTC

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    Observations 20 Sept 2009
    --------------------------------
    
    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.
    
    Meade DSI Pro II Monochrome CCD camera without filters.
    using integration times of 5 sec min to 25 seconds maximum
    depending on brightness of sky in particular area.No image
    processing done, but some done automatically in the auto reduction
    software.
    
    Used with 4 inch SKYWATCHER refractor- model 1025 - fitted with home
    made focal reducer to give an f/2.56 system. Image scale is 6.56 arc
    sec/pixel and field of view 84.8 x 63.2 arc minutes. Shows 15th
    magnitude stars in real time with reasonably good conditions.
    
    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:
    ==================
    33490 09 001A   0433 E 20090920171422500 16 15 2022519+031718 38  +079 00
    33490 09 001A   0433 E 20090920171807000 16 15 2026367+031935 28  +077 00
    33490 09 001A   0433 E 20090920172028000 16 15 2028569+032100 38  +083 01
    35815 09 047A   0433 E 20090920181410000 57 15 2039259+052711 39  +102 01
    35815 09 047A   0433 E 20090920201853000 57 15 2244347+052735 39
    35815 09 047A   0433 E 20090920202252000 57 15 2248348+052736 39
    
    
    Strays seen:
    ==================
    THURAYA 2
    27825 03 026A   0433 E 20090920171422500 16 15 2023152+031243 38  +110 01
    27825 03 026A   0433 E 20090920172028000 16 15 2029208+031621 38  +108 02
    INTELSAT 802
    24846 97 031A   0433 E 20090920172838000 16 15 1947018+052654 28  +123 01
    24846 97 031A   0433 E 20090920195513000 16 15 2213563+052528 18  +113 01
    GALAXY 11
    26038 99 071A   0433 E 20090920172838000 16 15 1946272+052731 28  +098 01
    26038 99 071A   0433 E 20090920195513000 16 15 2213248+052722 18  +105 03
    ASTRA 2C
    26853 01 025A   0433 E 20090920174915000 16 15 2001110+052646 18  +124 01
    26853 01 025A   0433 E 20090920175545000 16 15 2007419+052638 38  +125 02
    E-BIRD
    27948 03 043A   0433 E 20090920172838000 16 15 1947495+052457 28  +138 02
    27948 03 043A   0433 E 20090920195513000 16 15 2214460+052416 18  +132 01
    ARIANE 5 DEB (SYLDA)
    29164 06 020C   0433 E 20090920173710000 16 15 2000169+052856 38  +100 05
    29164 06 020C   0433 E 20090920173835000 16 15 2002594+051814 29  +110 07
    29164 06 020C   0433 E 20090920174000000 16 15 2005411+050834 28  +097 01
    AMC 14
    32708 08 011A   0433 E 20090920173528000 16 15 2000320+045042 68  +127 03
    32708 08 011A   0433 E 20090920173835000 16 15 2003312+043809 19  +123 05
    
    Notes:
    ---------
    (1) One of the measurements for PAN #35815 is obviously wrong in
        declination. I repeated it (in APEX) and got the same as before so
        the one reported now was done manually. APEX was unable to measure
        the last two images due to very thick cirrus so this was also done
        manually - extends the observed arc a little.
    (2) Something screwball with object #29164 - the observed track angle
        was slightly different to that predicted. However not important
        as its a stray.Predicted time was okay.
    (3) Because of thick cirrus from time to time some of the magnitudes
        were probably affected.
    (4) Apart from the cirrus conditions were good for my location-seeing
        around 11 arc seconds as compared to normal 15 arc seconds. Will
        try and observe tonight but long range weather prediction is not
        good.
    
    Cheers
    Greg 
    
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