Observations 14 Mar 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. 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 25mm focal length f/1.4 lens,integrating for 128 fields which is equivalent to a max exposure of 2.56 seconds maximum per image, but dependent on sky brightness. Field of view 14.4 x 10.8 degrees. Individual frames are video time stamped with GPS derived 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 CLASSFD.TLE: ----------------------- 37375 11 010A 0433 F 20110314180902900 56 15 0420370-030233 39 +030 05 37375 11 010A 0433 F 20110314180910100 56 15 0435230-061111 39 +030 05 37375 11 010A 0433 F 20110314180917300 56 15 0435410-051258 39 +030 05 37375 11 010A 0433 F 20110314180923800 56 15 0511160-134527 39 +030 05 37375 11 010A 0433 F 20110314180935000 56 15 0548020-204819 39 +030 05 37375 11 010A 0433 F 20110314180943900 56 15 0624360-262852 39 +030 05 Notes: ----------- (1) Despite heavy cirrus was a piece of cake. Last position may be a little out (not much) as mount unable to keep up with the satellite as it went through the zenith. Unable to catch up with it again. (2) Satellite running a few seconds late. Cheers Greg _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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