Optical 02 Oct 2013 Part 1

From: Greg Roberts (grr@telkomsa.net)
Date: Thu Oct 03 2013 - 13:25:29 UTC

  • Next message: Greg Roberts: "Corrections 02 Oct 2013"

    Observations 02 OCT 2013 Part 1
    --------------------------------------------
    
    Cosatrak 1 (Computerised satellite Tracking System).
    
    FLI ML8300M CCD camera with mechanical shutter + Trimble GPS
    
    Used with 135mm focal length f/2.8 TAMRON lens.
    Field of view 7.6 x 5.7 degrees.
    Images processed and measured manually.
    In ALL cases exposure was 2 seconds, one being taken roughly
    every second and under GPS time recording.
    
    Site 0433 : Longitude 18.51294 deg East, Latitude -33.94058 deg,
    Elevation 10 metres-situated in Pinelands (Cape Town),South Africa
    
    FALCON 9 LAUNCH:
    -----------------------
    39270 13 055F   0433 F 20131002174907390 55 15 2247566-395319 19
    39270 13 055F   0433 F 20131002174909390 55 15 2247251-393010 19
    39270 13 055F   0433 F 20131002174910432 55 15 2247074-391205 19
    39270 13 055F   0433 F 20131002174912432 55 15 2246271-384340 19
    39270 13 055F   0433 F 20131002174913458 55 15 2246135-382922 19
    39270 13 055F   0433 F 20131002174915458 55 15 2245336-380203 19
    39270 13 055F   0433 F 20131002174916501 55 15 2245211-374801 19
    39270 13 055F   0433 F 20131002174918501 55 15 2244429-372005 19
    39270 13 055F   0433 F 20131002174919527 55 15 2244300-370725 19
    39270 13 055F   0433 F 20131002174921527 55 15 2243519-363716 19
    39270 13 055F   0433 F 20131002174922568 55 15 2243396-362411 19
    39270 13 055F   0433 F 20131002174924568 55 15 2243083-355600 19
    39270 13 055F   0433 F 20131002174925596 55 15 2242544-354142 19
    39270 13 055F   0433 F 20131002174927596 55 15 2242156-351134 19
    39270 13 055F   0433 F 20131002174928622 55 15 2242055-345923 19
    39270 13 055F   0433 F 20131002174930622 55 15 2241335-343149 19
    39270 13 055F   0433 F 20131002174931665 55 15 2241213-341748 19
    39270 13 055F   0433 F 20131002174933665 55 15 2240047-334838 19
    39270 13 055F   0433 F 20131002174934690 55 15 2240358-333417 19
    39270 13 055F   0433 F 20131002174936690 55 15 2240018-330614 19
    39270 13 055F   0433 F 20131002174937733 55 15 2239527-325103 19
    
    UNKNOWN - DONT THINK FALCON 9 RELATED - bright
    ------------------------------------------
    99999 99 999A   0433 F 20131002174915458 55 15 2251046-394714 19
    99999 99 999A   0433 F 20131002174916501 55 15 2249169-391601 19
    99999 99 999A   0433 F 20131002174918501 55 15 2245467-381410 19
    99999 99 999A   0433 F 20131002174919527 55 15 2244058-374253 19
    99999 99 999A   0433 F 20131002174947957 55 15 2240452-363952 19
    99999 99 999A   0433 F 20131002174922568 55 15 2239078-360828 19
    99999 99 999A   0433 F 20131002174924568 55 15 2235517-350231 19
    99999 99 999A   0433 F 20131002174925596 55 15 2234216-343001 19
    99999 99 999A   0433 F 20131002174927596 55 15 2231076-332253 19
    
    STRAY SEEN:   --- very bright.
    --------------
    25063 97 074A   0433 F 20131002174747105 55 15 2233082-333844 19
    
    
    NOTES:
    --------
    (1) After two months of almost continual cloud and rain and a bit
        of health problems I hope I am back in operation.
    
    (2) This is part 1 of I suspect quite a few re FALCON 9 objects-
        I have to lot to meansure - in one case I had several cross the
        field of view in the space of a few minutes - maybe not all
        FALCON 9 (?) but correct speed, track angle and running parallel
        tracks - I suspect the actual payloads.
    
    (3) Meanwhile here are two objects measured that crossed the field
        of view together BUT at different track angles so the unknown
        in an unknown I havent tried too hard to match as Im rather
        mentally tired at the moment - I suspect a by-product of the
        new medication.  I suspect the object observed is currently
        called OBJECT F catalog number 39270. It is relatively easy
        appearing as an object varying between about mag +8 and to
        almost invisibility ( about +10 in this case) during the time
        observed. It also gave a brief flash.
    
    (4) The unknown crossed OBJECT F at a higher angular velocity so
        much lower orbit and appeared steady at about mag +2 to +3 --
        I dont find it in my element database but that could be my
        stupidity somewhere - I had a lot of problems at the start of
        the day which corrupted the software I used so eventually had to
        re-install the program. I suspect I now know where the original
        fault arose which caused the computer to refuse to read element
        files and froze the computer. Also after having not observed
        for two months I was a bit rusty in my techniques.
    
    (5) I believe I also saw the FALCON 9 object called OBJECT T #39284
        but it was a very brief glimpse and barely recorded on the image
        for the brief moment it was visible so was not brighter than
        mag +10.0 . In all cases I used the tracking system in stationary
        mode and basically watched the orbit planes of the various objects.
        Object T was about a minute or two following OBJECT F at the time.
    
    (6) I had mostly clear skies, crossed a few times by light cirrus until
        it eventually ( thankfully in my case!) wiped me out.
    
    (7) Also got a few images of PAN and companions through thick cirrus
        but those will be processed last.
    
    (8) I hope I did not make too many mistakes-- back to the measuring,
        which at the rate I am currently going is going to take several days
        -originally 1300 images of which satellites seen in about 330.
    
    
    
    Cheers
    Greg 
    
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    This archive was generated by hypermail 2b29 : Thu Oct 03 2013 - 13:27:33 UTC