Optical 16 Dec 2009

From: Greg Roberts (grr@telkomsa.net)
Date: Thu Dec 17 2009 - 14:52:16 UTC

  • Next message: Greg Roberts: "Re:Optical 16 Dec 2009"

    Observations 16 Dec 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.
    
    Video camera - MINTRON surveillance camera attached to Nikon
    telephoto lens set at approximate focal length 135mm at f/2.8/
    Exposures depend on background light level- maximum 2.5 seconds
    
    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 CLASSIFIED.TLE: (CCD observations - automatic processing with APEX)
    =========================================================================
    10941 78 058A   0433 P 20091216194849000 16 15 0207287+055045 38  +102 00
    10941 78 058A   0433 P 20091216195000000 16 15 0208510+055200 28  +103 00
    10941 78 058A   0433 P 20091216195059000 16 15 0209598+055301 28
    14675 84 009A   0433 P 20091216195214000 16 15 0142045+095036 28  +115 00
    14675 84 009A   0433 P 20091216195314000 16 15 0143036+095221 28  +117 00
    14675 84 009A   0433 P 20091216195406000 16 15 0143537+095348 18  +105 00
    19976 89 035A   0433 P 20091216194429000 16 15 0358330+093932 38
    19976 89 035A   0433 P 20091216194607000 16 15 0359521+094118 28
    19976 89 035A   0433 P 20091216194700000 16 15 0400357+094214 28
    25336 98 029A   0433 P 20091216183857000 16 15 0219145+090136 28
    25336 98 029A   0433 P 20091216184002000 16 15 0220191+090356 28
    25336 98 029A   0433 P 20091216184147000 16 15 0222024+090739 28
    27712 03 012B   0433 P 20091216214525000 16 15 0301247+052700 28  +108 11
    27712 03 012B   0433 P 20091216214739000 16 15 0303387+052850 28
    27712 03 012B   0433 P 20091216214816000 16 15 0304157+052921 18
    32378 07 060A   0433 P 20091216184956500 16 15 0126174+311310 18
    32378 07 060A   0433 P 20091216185610500 16 15 0141229+262713 28
    32378 07 060A   0433 P 20091216185807500 16 15 0146571+243943 28
    34713 09 017A   0433 P 20091216190558500 16 15 0509121+051556 28  +118 02
    34713 09 017A   0433 P 20091216192315000 16 15 0526312+051613 28
    34713 09 017A   0433 P 20091216194028500 16 15 0543485+051625 37  +115 02
    
    Strays seen ( CCD observations - automatic processing with APEX)
    =========================================================================
    EUTELSAT W2A
    34710 09 016A   0433 E 20091216194849000 16 15 0205496+052845 38
    34710 09 016A   0433 E 20091216195059000 16 15 0207594+052847 28
    ATLANTIC BIRD 3
    27460 02 035A   0433 E 20091216214739000 16 15 0301152+052410 28  +133 01
    27460 02 035A   0433 E 20091216214816000 16 15 0301522+052410 18  +133 12
    AMOS 2
    28132 03 059A   0433 E 20091216214739000 16 15 0301204+052651 28  +138 02
    28132 03 059A   0433 E 20091216214816000 16 15 0301574+052652 18  +136 01
    INTELSAT 904
    27380 02 007A   0433 E 20091216190159000 16 15 0504399+051809 28
    BREEZE M DEB TANK  RANGE 5602 KMS
    28359 04 022B   0433 E 20091216205904000 16 15 0250368-503721 28
    28359 04 022B   0433 E 20091216210001000 16 15 0304255-515454 28
    
    
    FROM DVD recording made whilst tracking:
    
    FOR CLASSIFIED.TLE: ( from Video - manually reduced)
    ====================
    24680 96 072A   0433 P 20091216184646000 56 15 0653438-062544 39  +050 05
    24680 96 072A   0433 P 20091216184708700 56 15 0643448-024140 39  +050 05
    24680 96 072A   0433 P 20091216184731400 56 15 0634168+010203 39  +050 05
    24680 96 072A   0433 P 20091216184824800 56 15 0613487+093948 39  +050 05
    21775 91 076A   0433 P 20091216200244900 56 15 2215200-371717 39  +100 05
    21775 91 076A   0433 P 20091216200331900 56 15 2214095-412001 39  +100 05
    21775 91 076A   0433 P 20091216200708100 56 15 2156355-615535 39  +100 05
    
    Strays seen:  (from Video - manually reduced)
    ==============
    GLOBALSTAR M056  steady
    25945 99 058C   0433 P 20091216184117700 56 15 0227155+082940 39  +045 05
    IRIDIUM 914 steady
    24836 97 030A   0433 P 20091216184558100 56 15 0654043-055151 39  +070 05
    METEOR 1-17 variable
    07274 74 025A   0433 P 20091216200301800 56 15 2216267-372107 39  +070 05
    SL-3 R/B steady
    07210 74 011B   0433 P 20091216200301800 56 15 2217381-383424 39  +050 05
    ARIANE 44 LP steady range 13358 kms
    23127 94 034D   0433 P 20091216194330300 56 15 0544189+061419 39  +075 05
    COSMOS 2392 steady
    27470 02 037A   0433 P 20091216194331600 56 15 0544416+061402 39  +050 05
    ATLAS CENTAUR Rocket variable range 1500 kms -briefly visible then invis.
    07902 75 042B   0433 P 20091216195753100 56 15 2218032-122102 39  +070 05
    IRIDIUM 914 minor flare - pretty
    24836 97 030A   0433 P 20091216202556400 56 15 0047244-172622 39  +050 05
    METEOR 2-6
    11962 80 073A   0433 P 20091216202328200 56 15 2341429-112351 39  +075 05
    MONITOR-E (SL-19) steady
    27840 03 031A   0433 P 20091216192026800 56 15 0527224+045654 39  +035 05
    SL-8 R/B steady
    21108 91 009J   0433 P 20091216192742600 56 15 0527235+052301 39  +050 05
    SL-19 R/B steady
    35501 09 036D   0433 P 20091216192757000 56 15 0528396+051530 39  +035 05
    COSMOS 990 steady
    10676 78 019A   0433 P 20091216192910500 56 15 0534261+040255 39  +050 05
    DELTA 2 DEBRI steady
    25138 98 002E   0433 P 20091216191136800 56 15 0513337+054049 39  +075 05
    SL-8 R/B steady
    18096 87 049B   0433 P 20091216191339900 56 15 0512408+050131 39  +040 05
    COSMOS 1980 steady
    19649 88 102A   0433 P 20091216191854100 56 15 0518501+045259 39  +035 05
    
    UNKNOWN
    99999 99 999A   0433 P 20091216191854100 56 15 0521212+040337 39  +050 05
    99999 99 999A   0433 P 20091216191928700 56 15 0522338+040309 39  +060 05
    99999 99 999A   0433 P 20091216192257300 56 15 0529248+040316 39  +100 05
    99999 99 999A   0433 P 20091216192522200 56 15 0534156+040346 39  +100 05
    
    Notes:
    --------
    (1) Evening looked promising at start but within half an hour
        cirrus/cloud appeared with high humidity after which it became a
        torture session trying to see satellites and failing to see many.
    
    
    (2)Unusual unknown - looks like a possible Centaur (?) - when
        first noted was quite bright for about a minute and then faded to
        invisibility with brief spells of visibility for a few seconds at
        about mag +9.5 to +10.
        A bit difficult to measure manually, hence the spread in declination.
        My guess, at the moment, is that its a rocket drifting along
        the Clarke belt with low inclination. I will try and see if I
        can do a better job of the positions but image scale probably too
        small. I have my doubts about finding it again.
    
    Cheers
    Greg
    
    
    
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