Optical 28 Jan 2009 - all

From: Greg Roberts (grr@telkomsa.net)
Date: Thu Jan 29 2009 - 14:42:34 UTC

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    Observations 28 Jan 2009 -all
    ---------------------------------
    
    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) 145mm focal length f/2.5 lens fitted to 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.
    Image integrated for 2.56 seconds but exposure depends on sky background
    brightness. Field of view 2.5 x 1.9 degrees and showing about mag +12
    stars in "real time". Used as a finder for the 6 inch reflector.
    Individual frames are video time stamped with GPS derived signal.
    
    (2)Meade DSI Pro II Monochrome CCD camera without filters.
    using integration times of 20 sec min to 60 seconds maximum
    depending on brightness of sky in particular area.No image
    processing done.
    Used with 6 inch f/5 CELESTRON reflector modified to f/2.7 with home
    made corrector lens.Field of view 55 by 40 arc minutes and showing
    15th magnitude stars in real time.
    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:
    ---------------------
    90004 99 750A   0433 F 20090128183238000 56 15 0752189-513258 39  +050 05
    90004 99 750A   0433 F 20090128183248400 56 15 0759118-520416 39  +050 05
    90004 99 750A   0433 F 20090128183253600 56 15 0802424-521952 39  +055 05
    90004 99 750A   0433 F 20090128183337800 56 15 0833228-541244 39  +065 05
    90004 99 750A   0433 F 20090128183343000 56 15 0837074-542353 39  +060 05
    90004 99 750A   0433 F 20090128183443000 56 15 0921186-555431 39  +060 05
    90004 99 750A   0433 F 20090128183448200 56 15 0925131-560002 39  +065 05
    90004 99 750A   0433 F 20090128183540200 56 15 1003381-562125 39  +060 05
    90004 99 750A   0433 F 20090128183545400 56 15 1007171-562046 39  +060 05
    24680 96 072A   0433 F 20090128185608000 56 15 1122180-363049 39  +055 05
    24680 96 072A   0433 F 20090128185701200 56 15 1049027-305746 39  +050 05
    24680 96 072A   0433 F 20090128185800000 56 15 1014136-225420 39  +050 05
    24680 96 072A   0433 F 20090128185901900 56 15 0941042-123954 39  +045 05
    24680 96 072A   0433 F 20090128190004600 56 15 0911418-012348 39  +040 05
    24680 96 072A   0433 F 20090128190105000 56 15 0847256+091400 39  +040 05
    25336 98 029A   0433 F 20090128184651000 56 15 0628318+135506 39  +080 05
    25336 98 029A   0433 F 20090128185005000 56 15 0631466+135555 39  +080 05
    29240 06 024A   0433 F 20090128190848000 56 15 0700219+044308 39  +120 05
    29240 06 024A   0433 F 20090128191607000 56 15 0707446+043807 39  +120 05
    29240 06 024A   0433 F 20090128213045000 56 15 0923332+032044 39  +115 05
    29240 06 024A   0433 F 20090128213335000 56 15 0926249+031935 39  +115 05
    91141 09 523A   0433 F 20090128192222000 56 15 0819295+051440 39  +155 05
    91141 09 523A   0433 F 20090128193324000 56 15 0830359+051432 39  +150 05
    91141 09 523A   0433 F 20090128212212000 56 15 1020040+051217 39  +165 05
    91141 09 523A   0433 F 20090128212910000 56 15 1027043+051201 39  +165 05
    90005 99 804A   0433 F 20090128193720000 56 15 0654583+143033 39  +095 05
    90005 99 804A   0433 F 20090128194142000 56 15 0658555+142945 39  +095 05
    96011 96 511A   0433 F 20090128200430000 56 15 0721092+110418 39  +135 05
    96011 96 511A   0433 F 20090128200834000 56 15 0726192+111228 39  +135 05
    96071 96 571A   0433 F 20090128201125000 56 15 0739173+112201 39  +125 05
    96071 96 571A   0433 F 20090128201623000 56 15 0744153+112929 39  +125 05
    96022 96 511A   0433 F 20090128201821000 56 15 0248497+044926 39  +110 05
    96022 96 511A   0433 F 20090128202506000 56 15 0255314+050938 39  +110 05
    96025 96 525A   0433 F 20090128202815000 56 15 0520403+135717 39  +115 05
    96025 96 525A   0433 F 20090128203252000 56 15 0525164+135740 39  +115 05
    96032 96 532A   0433 F 20090128203736000 56 15 0242599+115307 39  +145 05
    96032 96 532A   0433 F 20090128204109000 56 15 0246312+120457 39  +145 05
    18583 87 097A   0433 F 20090128210032000 56 15 0822454+181336 39  +110 05
    18583 87 097A   0433 F 20090128210343000 56 15 0825587+181331 39  +110 05
    96047 96 547A   0433 F 20090128210615000 56 15 0748352+232010 39  +120 05
    96047 96 547A   0433 F 20090128210926000 56 15 0751591+232004 39  +120 05
    96059 96 559A   0433 F 20090128211213000 56 15 0807540+184948 39  +135 05
    96059 96 559A   0433 F 20090128211451000 56 15 0809535+184040 39  +135 05
    22988 94 009A   0433 F 20090128213519000 56 15 0306296-011825 39  +105 05
    22988 94 009A   0433 F 20090128213854000 56 15 0310074-011651 39  +105 05
    
    Strays seen:
    ------------------
    SL-8 R/B variable
    14241 83 079B   0433 F 20090128183858000 56 15 1121085-545339 39  +050 05
    SL-8 R/B steady
    18096 87 049B   0433 F 20090128185002800 56 15 0629440+132907 39  +030 05
    CZ-3A R/B  range 5600 kms variable
    30324 07 003B   0433 F 20090128190924100 56 15 0658403+052143 39  +050 05
    MIDAS 3
    00163 61 018A   0433 F 20090128201029700 56 15 0738140+110937 39  +050 05
    METEOSAT 4 Apogee Kick Motor, range 37610 kms, variable
    20800 89 020E   0433 F 20090128211213000 56 15 0808183+184652 39  +140 05
    
    Notes:
    --------
    (1) Not a good night for tracking.Frequent wind gusts made imaging of
        16th magnitude satellites difficult. Eventually abandoned observing
        because of this.
    
    (2) 90004 observed in very strong twilight with video setup. Only able to
        see the flashes.
    
    (3) #29240- MiTEx satellite - quite easy, especially as it reaches its
        maximum declination apex and started to turn so that it was
        essentially  stationary during the exposures.
    
    (4) #91141 getting a bit more difficult now as it sinks lower in the
        east. Last night was 30 degrees maximum elevation. I will probably
        loose it before it gets much lower.
    
    (5) New ESA object seen for the first time - #96047 - quite easy at
        magnitude +12. Mostly steady but gave one flash to about
        magnitude +05
    
    (6) ESA object #96032 quite difficult at magnitude +14.5
    
    
    Cheers
    Greg
    
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