Optical 03 Jan 2009

From: Greg Roberts (grr@telkomsa.net)
Date: Sun Jan 04 2009 - 15:25:57 UTC

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    Observations 03 Jan 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.
    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
    
    
    25336 98 029A   0433 E 20090103185015000 56 15 0453354+124651 39  +080 05
    25336 98 029A   0433 E 20090103183737000 56 15 0441014+123201 39  +080 05
    32287 07 054A   0433 E 20090103213709000 56 15 0535321+053808 39  +090 05
    32287 07 054A   0433 E 20090103201555000 56 15 0414128+064454 39  +100 05
    96005 96 505A   0433 E 20090103223438000 56 15 0504047+062618 39  +120 05
    96005 96 505A   0433 E 20090103223902000 56 15 0508144+063222 39  +120 05
    96031 96 531A   0433 E 20090103233113000 56 15 0817235+083615 39  +125 05
    96031 96 531A   0433 E 20090103233341000 56 15 0819593+083026 39  +125 05
    96055 96 555A   0433 E 20090103233622000 56 15 0859453+154537 39  +125 05
    96055 96 555A   0433 E 20090103234104000 56 15 0904515+152637 39  +125 05
    96079 96 579A   0433 E 20090103192522000 56 15 0543504+121524 39  +115 05
    96079 96 579A   0433 E 20090103192834000 56 15 0546581+122346 39  +115 05
    96102 96 602A   0433 E 20090103230331000 56 15 0540542+224854 39  +130 05
    96102 96 602A   0433 E 20090103230642000 56 15 0544472+224717 39  +130 05
    96144 96 644A   0433 E 20090103234239000 56 15 0947162+070001 39  +120 05
    96144 96 644A   0433 E 20090103234650000 56 15 0951201+064512 39  +120 05
    96145 96 645A   0433 E 20090103235016000 56 15 0635428+092602 39  +125 05
    96145 96 645A   0433 E 20090103235458000 56 15 0639378+090531 39  +125 05
    90008 00 838A   0433 E 20090103194548000 56 15 0713453+074449 39  +105 05
    90008 00 838A   0433 E 20090103194859000 56 15 0716552+075317 39  +105 05
    90030 05 544A   0433 E 20090103190935000 56 15 0358461+074042 39  +100 05
    90030 05 544A   0433 E 20090103191202000 56 15 0401065+074627 39  +100 05
    90049 05 605C   0433 E 20090103200133000 56 15 0822332+051854 39  +100 05
    90049 05 605C   0433 E 20090103200216000 56 15 0823158+052008 39  +100 05
    05204 71 039A   0433 E 20090103200517000 56 15 0748000+110423 39  +100 05
    05204 71 039A   0433 E 20090103200828000 56 15 0752096+105401 39  +100 05
    22915 93 074A   0433 E 20090103194211000 56 15 0642233+071917 39  +115 05
    22915 93 074A   0433 E 20090103194337000 56 15 0643493+072049 39  +115 05
    26575 00 065A   0433 E 20090103225127000 56 15 0441550+052125 39  +105 05
    26575 00 065A   0433 E 20090103225524000 56 15 0445529+052119 39  +105 05
    23223 94 054A   0433 E 20090103212335000 56 15 0211597+022409 39  +080 05
    23223 94 054A   0433 E 20090103212646000 56 15 0215098+022821 39  +080 05
    23855 96 026A   0433 E 20090103204707000 56 15 0416014+115121 39  +090 05
    23855 96 026A   0433 E 20090103205019000 56 15 0419009+115543 39  +090 05
    27168 02 001A   0433 E 20090103185305000 56 15 0353083+061004 39  +090 05
    27168 02 001A   0433 E 20090103185550000 56 15 0355516+061143 39  +090 05
    22988 94 009A   0433 E 20090103225821000 56 15 0250518-011953 39  +090 05
    22988 94 009A   0433 E 20090103230003000 56 15 0252350-011926 39  +090 05
    29240 06 024A   0433 E 20090103210807000 56 15 0216177+040245 39  +125 05
    29240 06 024A   0433 E 20090103211240000 56 15 0221014+040505 39  +125 05
    26635 00 080A   0433 E 20090103224331000 56 15 0442020+064850 39  +085 05
    26635 00 080A   0433 E 20090103224558000 56 15 0444303+065028 39  +085 05
    22787 93 056A   0433 E 20090103190446000 56 15 0401084+064654 39  +105 05
    22787 93 056A   0433 E 20090103190713000 56 15 0403347+065121 39  +105 05
    23967 96 042A   0433 E 20090103211832000 56 15 0225292+045608 39  +095 05
    23967 96 042A   0433 E 20090103212143000 56 15 0228397+045946 39  +095 05
    25967 99 065A   0433 E 20090103195648000 56 15 0805540+071949 39  +110 05
    25967 99 065A   0433 E 20090103200000000 56 15 0809084+072013 39  +110 05
    28117 03 057A   0433 E 20090103195113000 56 15 0755424+065546 39  +110 05
    28117 03 057A   0433 E 20090103195425000 56 15 0758540+065431 39  +110 05
    
    
    Notes:
    ----------
    
    (1) Several news ESA 96*** objects seen as a result of now being able to get
        down to about magnitude +15 to magnitude +16. They are #96005 and
        #96144
    
        #96005 - variable
        #96055 - steady
        #96079 - maybe slight variability
        #96102 - steady at mag +13
        #96144 - a difficult one - brief flash to about +12 then fairly
                 long period fainter than mag +14 before another brightening
                 then fading again
        #96145 - regular flashes to about mag +12.5 approx every 6 seconds,
                 flashing +12.5 to mag +14.
    
        #90008 - steady
        #90030 - steady
        #90049 - steady
    
    (2) I may report the numerous strays seen tomorrow - depends on what I
        see tonight.
    
    
    Cheers
    Greg
    
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