Observations 25 August 2008 Part 2 ----------------------------------------- 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 sesnitivity 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) 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 135mm focal length f/2.8 lens,integrating for 128 frames which is equivalent to a max exposure of 2.56 seconds maximum per image. Field of view 2.7 x 2.1 degrees. 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 but dark field applied. Used with 200mm focal length f/2.8 Nikkon telephoto lens, field of view 1.88 x 1.40 degrees. Can get to magnitude 13 or so in less than 20 seconds exposure. 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 S, Elevation 10 metres-situated in Pinelands (Cape Town),South Africa For CLASSFD.TLE: ----------------------- 32378 05 041B 0433 F 20080825195600900 56 15 1732333+263923 39 +085 05 32378 05 041B 0433 F 20080825200048900 56 15 1752029+310235 39 +090 05 32378 05 041B 0433 F 20080825200716800 56 15 1812132+353446 39 +093 05 96012 96 512A 0433 F 20080825191143000 56 15 2050102+060801 39 +120 05 96012 96 512A 0433 F 20080825191714000 56 15 2054474+060308 39 +110 05 90005 99 804A 0433 F 20080825202123000 56 15 0035331+041439 39 +125 05 90005 99 804A 0433 F 20080825202826000 56 15 0042229+043005 39 +125 05 96070 96 570A 0433 F 20080825205223000 56 15 2318311+063613 39 +125 05 96070 96 570A 0433 F 20080825205719000 56 15 2322568+063416 39 +125 05 96078 96 578A 0433 F 20080825210201000 56 15 2327100-050229 39 +135 05 96078 96 578A 0433 F 20080825210541000 56 15 2330538-045646 39 +135 05 Strays seen: -------------- LEASAT 3 PKM range 14100 kms 16229 85 028E 0433 F 20080825192011000 56 15 1735333+115548 39 +085 05 COSMOS 2181 21902 92 012A 0433 F 20080825170442000 56 15 1612580+055943 39 +080 05 EUTELSAT W2 geostationary 25491 98 056A 0433 F 20080825183922000 56 15 1758250+052605 39 +115 05 SICRAL 1 geostationary 26694 01 005A 0433 F 20080825183922000 56 15 1759180+052156 39 +115 05 SL-14 R/B 25369 98 036G 0433 F 20080825180906500 56 15 1539090-013940 39 +075 05 COSMOS 1842 17911 87 038A 0433 F 20080825180932100 56 15 1534290-015313 39 +060 05 COSMOS 2058 steady 20465 90 010A 0433 F 20080825185907400 56 15 1400510-060723 39 +040 05 EXPRESS 3A geostationary 26378 00 031A 0433 F 20080825175653000 56 15 1513248+053314 39 +120 05 SYRACUSE 3A geostationary 28885 05 041B 0433 F 20080825191143000 56 15 2051404+052026 39 +090 05 SL-12 R/B(2) geostationary 14117 82 009F 0433 F 20080825203323000 56 15 2319356+004552 39 +125 05 Cheers Greg ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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