Obs 15 June 2006

From: Greg Roberts (grr@iafrica.com)
Date: Fri Jun 16 2006 - 11:58:05 EDT

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    Observations 15 June 2006:
    --------------------------------
    
    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 145mm focal length f/2.5 lens,integrating for 128 frames
    which is equivalent to an exposure of 2.56 seconds per image.
    
    Conditions good but very high humidity. Stopped by clouds.
    
    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:
    ------------------------
    
    90004 99 750A   0433 G 20060615162538600 56 15 1120242+024946 39  +080 05
    90004 99 750A   0433 G 20060615163206100 56 15 1212365-165557 39  +075 05
    90004 99 750A   0433 G 20060615163704400 56 15 1357547-415859 39  +060 05
    90004 99 750A   0433 G 20060615164054600 56 15 1700266-541834 39  +050 05
    23533 95 015A   0433 G 20060615165543300 56 15 1632399-292252 39  +060 05
    23533 95 015A   0433 G 20060615165644000 56 15 1547356-151133 39  +060 05
    23533 95 015A   0433 G 20060615165816800 56 15 1452439+081545 39  +070 05
    25725 99 023B   0433 G 20060615170440700 56 15 0735391-025735 39  +078 05
    25725 99 023B   0433 G 20060615170701900 56 15 0754300-045138 39  +075 05
    25725 99 023B   0433 G 20060615171007300 56 15 0822403-072703 39  +065 05
    23031 94 017B   0433 G 20060615172016400 56 15 0858030+163348 39  +066 05
    28637 05 011B   0433 G 20060615174046100 56 15 0616557-294845 39  +085 05
    28637 05 011B   0433 G 20060615174143200 56 15 0640254-202122 39  +085 05
    28637 05 011B   0433 G 20060615174241400 56 15 0658353-105143 39  +090 05
    25615 98 055C   0433 G 20060615174847400 56 15 1246128+390054 39  +075 05
    25615 98 055C   0433 G 20060615175004700 56 15 1251528+265857 39  +070 05
    25615 98 055C   0433 G 20060615175157700 56 15 1307190-092230 39  +040 05
    28385 04 034B   0433 G 20060615181901900 56 15 0949247-073559 39  +105 05
    28385 04 034B   0433 G 20060615182059600 56 15 0953549-045943 39  +103 05
    28385 04 034B   0433 G 20060615182302500 56 15 0958418-020549 39  +100 05
    25489 98 055A   0433 G 20060615183033300 56 15 0807264-184109 39  +105 05
    25489 98 055A   0433 G 20060615183053800 56 15 0756414-231319 39  +105 05
    
    Strays seen:
    ----------------
    
    Iras   nice flare to mag +2
    13777 83 004A   0433 G 20060615165120500 56 15 0551416-520947 39  +050 05
    SL-8 debri  variable +9 to invisible
    03038 65 020EN  0433 G 20060615165215400 56 15 0557481-513150 39  +090 05
    TDRS 4 IUS  variable +9 to invisible
    19884 89 021C   0433 G 20060615171953800 56 15 0859437+181512 39  +090 05
    Cosmos 1812 rocket  +9 variable
    17296 87 003B   0433 G 20060615174002400 56 15 0603112-342550 39  +090 05
    Ariane 4 rocket  variable
    24770 97 016C   0433 G 20060615180539600 56 15 1447580+293551 39  +075 05
    24770 97 016C   0433 G 20060615180613700 56 15 1453016+285251 39  +075 05
    
    
    Notes:
    -----------
    
    (1) #90004 regular flasher.
    
    (2) #23031 only one position - may be a little out along track as the
        ends of the integration are not well defined.
    
    (3) #25615 - brilliant flare to zero magnitude at low elevation,
        another flare towards end of observed track but not as bright
    
    (4) #24770 originally mistaken for #90028 running early but after
        tracking it for a minute or so it was obvious that something was
        "wrong" as the satellite was deviating more and more from the
        predicted track, dropping in elevation and falling "behind" so
        was slightly higher than what #90028 was. As a result of this
        mistaken track I did not really get a good chance to look for
        #90028.
    
    (5) The "Bartelising" of my new 6 inch f/5 reflector is complete and
        works extremely well as a CoSaTrak system, outperforming my current
        system. Track speeds can now go up to 6 degrees/sec ( current
        system is about 2.5 degrees/sec), there is no backlash in the
        system and I am really tempted to make this my main system - still
        to decide :-))  Its currently sitting in my "workshop" whilst I
        complete some minor tasks.
    
    (6) As a result of the success of Ivan Artner in radio tracking some of
        the satellites in CLASSFD.TLE ( thus allowing "observations" during
        the day and cloudy weather!) my interest in radio tracking has been
        rekindled and Ive just purchased an all mode receiver providing
        continuous coverage of the radio spectrum from 100 khz up to 3000 Mhz
        (name of unit is AOR 8200 Mk3). Now I just have to set up/make some
        antennas for specific frequencies then Ill also be active in radio
        tracking - as if I dont have enough to keep me busy at the moment!
    
    (7) Dont know when next I will be tracking - now in the middle of my
        rainfall season and besides being cold ( for Cape Town that is!)
        and very damp, there are clouds virtually every night and only clear
        when I am not in the position to track!
    
    Cheers
    Greg
    
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