Optical 29 May 2009

From: Greg Roberts (grr@telkomsa.net)
Date: Sat May 30 2009 - 09:21:59 UTC

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    Observations 29 May 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.
    
    Exposure time to nearest second inserted into image FITS header 
    from PC clock which is checked 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:
    -----------------------------
    33490 09 001A   0433 F 20090529162140500 16 15 1216414+042005 18  +086 01   
    33490 09 001A   0433 F 20090529162154500 16 15 1216546+041954 18  +083 01   
    33490 09 001A   0433 F 20090529162207500 16 15 1217074+041943 37  +085 01   
    33490 09 001A   0433 F 20090529162220500 16 15 1217211+041935 18  +085 01   
    33490 09 001A   0433 F 20090529162246500 16 15 1217477+041912 18  +086 02   
    33490 09 001A   0433 F 20090529162300500 16 15 1218007+041902 18  +087 01   
    33490 09 001A   0433 F 20090529162326500 16 15 1218270+041842 57  +084 01   
    33490 09 001A   0433 F 20090529162339500 16 15 1218402+041832 18  +085 01   
    33490 09 001A   0433 F 20090529162352500 16 15 1218534+041821 18  +084 02   
    
    
    Notes:
    -------
    (1) 1 second exposures used as twilight sky too bright. Processed 
        automatically in APEX-II.
        
    (2) Stopped by rain - of course it cleared 20 minutes after I had shut 
        down for the night!
        
    Cheers
    Greg
    
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