Optical 02 Nov 2011 Part 2

From: Greg Roberts (grr@telkomsa.net)
Date: Thu Nov 03 2011 - 15:34:56 UTC

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    Observations 02 Nov 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.
    
    (1) 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 200mm focal length f/2.8 lens.Field of view 1.86 x 1.38
    degrees. Mag +13.5 stars in "real" time on the monitor.
    Not really suitable for geostationary objects due to about 40
    (or more) dead pixels that look like geostationary satellites!
    Individual frames are video time stamped with GPS derived signal.
    Images processed and measured manually.
    
    (2)Meade DSI Pro II Monochrome CCD camera without filters.
    using integration times of 05 sec min to 30 seconds maximum
    depending on brightness of sky in particular area.No image
    processing done but dark field applied.
    Used with 50mm focal length f/1.8 lens ,field of view 7.0 x 5.2
    degrees. Mag 11.0 stars with 6 second exposure.
    Exposure time to nearest second(?)inserted into image FITS header
    from PC clock which is checked against GPS 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 CLASSIFIED.TLE:
    -------------------------------- 
    90088 11 906A   0433 G 20111102190526000 56 15 2310130-063648 39
    90088 11 906A   0433 G 20111102200335000 56 15 0017020-004505 39
    90088 11 906A   0433 G 20111102200832000 56 15 0021049-001920 39
    90088 11 906A   0433 G 20111102202528000 56 15 0034030+010343 39
    33490 09 001A   0433 G 20111102210240800 56 15 0258506+071157 39
    19976 89 035A   0433 G 20111102210912500 56 15 0317294+084846 39
    19976 89 035A   0433 G 20111102211146100 56 15 0319364+085157 39
    27168 02 001A   0433 G 20111102212824500 56 15 0221193+041327 39
    20344 89 061F   0433 G 20111102182214800 56 15 0059432+051338 39
    
    STRAYS SEEN:
    --------------------
    EUTELSAT W3C
    37836 11 057A   0433 G 20111102211338700 56 15 0059459+052213 39
    COSMOS 1382  range 9435 kms
    13295 82 064A   0433 G 20111102211508800 56 15 0105259+045505 39
    IRIDIUM 98
    27451 02 031B   0433 G 20111102182235300 56 15 0100093+035815 39  +050 05
    SL-12 R/B(2) range 10480 kms
    25743 99 027D   0433 G 20111102183216700 56 15 2328558-060523 39  +075 05
    SL-14 R/B
    13553 82 092B   0433 G 20111102183635000 56 15 2331529-050132 39  +020 05
    DASH/VEP3  range 7160 kms
    27368 02 003B   0433 G 20111102190616800 56 15 2329406-055217 39  +040 05
    TITAN 3A Transtage R/B  variable
    01359 65 034A   0433 G 20111102191719800 56 15 2357114-020634 39  +055 05
    SL-8 R/B
    12836 81 091B   0433 G 20111102192412100 56 15 2358563-023548 39  +045 05
    SL-12 R/B(2) range 10050 kms
    25743 99 027D   0433 G 20111102182901000 56 15 2306440-051942 39  +075 05
    SJ-6H
    37180 10 051B   0433 G 20111102184131000 56 15 2348250-044148 39  +045 05
    COSMOS 475
    05846 72 009A   0433 G 20111102192240000 56 15 2347250-002746 39  +080 05
    BREEZE M DEB TANK range 4785 kms
    37187 10 053C   0433 G 20111102202528000 56 15 0027350+020101 39  +065 05
    
    NOTES:
    --------
    (1) First and last positions here reported for 90088 were obtained with
        the wide angle set-up so timing accuracy probably not better than 1
        second or worse than 2 seconds.
    (2) An unknown object matching direction/track angle and time for
        CALSPHERE 2 #00902 seen but rejected as was about 3 degrees off track
        so may have been a chance meteor but appeared in two frames. Rather
        faint at +8 so maybe debri. Not worth bothering about.
    (3) Only the more "interesting" strays reported but all objects seen were
        identified - only way one finds "unknowns" :-(((
    (4) Still to identify about a dozen geostationary objects seen in the
        wide field images but dont suspect anything interesting.
    
    Cheers
    Greg 
    
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