Observations 05 APRIL 2010 ---------------------------------------- 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 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 CLASSIFIED.TLE: ===================== 04510 70 069A 0433 G 20100405233156000 16 25 1103296-110636 98 04510 70 069A 0433 G 20100405233257000 16 15 1104324-110952 48 +153 07 04510 70 069A 0433 G 20100405233409000 16 15 1106020-111442 48 +121 05 08482 75 118A 0433 G 20100405231737000 16 15 1707462-095114 18 08482 75 118A 0433 G 20100405232051000 16 15 1711032-095046 18 08482 75 118A 0433 G 20100405232249000 16 15 1713052-095029 18 +143 02 08482 75 118A 0433 G 20100405232349000 16 15 1714062-095016 18 14675 84 009A 0433 G 20100405210441000 16 15 0848549+102226 28 14675 84 009A 0433 G 20100405210619000 16 15 0850146+102014 28 14675 84 009A 0433 G 20100405210715000 16 15 0851004+101857 28 15543 85 010B 0433 G 20100405222428000 16 15 1632213-070602 28 15543 85 010B 0433 G 20100405222632000 16 15 1634275-071311 28 +095 00 15543 85 010B 0433 G 20100405222729000 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68 STRAYS SEEN: ================= COSMOS 706 range 20500 kms 07625 75 007A 0433 E 20100405233409000 16 15 1105386-111301 28 +105 05 TDRS 7 23613 95 035B 0433 E 20100405222125000 16 15 1720066-004738 28 +101 05 23613 95 035B 0433 E 20100405222157000 16 15 1720378-004906 28 +101 05 RADUGA 1M-1 32373 07 058A 0433 E 20100405223956000 16 15 1640164+051223 38 32373 07 058A 0433 E 20100405224246000 16 15 1643062+051224 28 GONETS D1M1 28909 05 048B 0433 E 20100405181405000 16 15 0854145+243613 39 28909 05 048B 0433 E 20100405181404000 16 15 0854160+243456 39 THURAYA 2 27825 03 026A 0433 E 20100405195738000 16 15 1203167+050936 28 +104 00 27825 03 026A 0433 E 20100405195906000 16 15 1204446+050825 38 +103 00 SL-12 R/B(2) 11862 80 049F 0433 E 20100405195738000 16 15 1202398+050057 38 +124 04 11862 80 049F 0433 E 20100405195906000 16 15 1204031+045433 38 +128 02 INTELSAT 904 27380 02 007A 0433 E 20100405210149000 16 15 1418298+051825 28 +111 00 27380 02 007A 0433 E 20100405210242000 16 15 1419225+051824 28 +115 01 GALAXY 11 26038 99 071A 0433 E 20100405202523000 16 15 1140081+053019 28 +101 00 26038 99 071A 0433 E 20100405202712000 16 15 1141570+053018 28 +101 00 INTELSAT 802 24846 97 031A 0433 E 20100405202523000 16 15 1140462+053004 28 +111 01 24846 97 031A 0433 E 20100405202712000 16 15 1142351+053003 28 +112 00 E-BIRD 27948 03 043A 0433 E 20100405202523000 16 15 1141474+053129 28 +097 00 27948 03 043A 0433 E 20100405202712000 16 15 1143362+053127 28 +100 00 EKRAN 11 14377 83 100A 0433 E 20100405224502000 16 15 1548326-065237 28 Notes: ====== (1) Finally a night good enough to observe - actually turned out to be one of those rare nights when transparency good, wind not too high and seeing about 10 arc seconds- somewhat better than Cape Town's usual 12-15 arc seconds. With short integrations could get down to mag +14.5 without a problem. With winter approaching the evenings are starting to cool down - the CCD camera likes this and has less dead pixels and is more sensitive- a few degrees centigrade makes a big difference.Time I cooled the camera but this will probably overload the mounting which can barely cope at the moment. (2) 90070 running close to predicted time. (3) Still have a few video observations to reduce manually which I will do tomorrow- Ive had enough for today. Cheers Greg _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
This archive was generated by hypermail 2b29 : Tue Apr 06 2010 - 13:52:07 UTC