GTAC Observation Log 1. Date : 09/05/2010 2. Observation Sr. No. : 4858 3. Observer : Nissim Kanekar 4. Observer's Email : nkanekar@ncra.tifr.res.in 5. Project Name : 0920+4441 6. Project Code : 18_063 7. Operator(s) : Amruta, Deepak, Manisha, Nilesh, Rupsingh, Santaji, 8. Command File : /odisk/gtac/cmd/nissim/0920+4441.cmd, /odisk/gtac/cmd/nissim/1209+2547.cmd, /odisk/gtac/cmd/nissim/1333+1649.cmd, /odisk/gtac/cmd/nissim/1601+1357.cmd 9. LTA File : /rawdata/9may/18_063_09may2010.lta, /rawdata1/9may/18_063_09may2010.ltb 10. GSB File : /gsbifrdata/9may/18_063_09may2010_gsb.lta, /gsbifrdata/9may/18_063_09may2010_gsb.lta.1, /gsbifrdata/9may/18_063_09may2010_gsb.lta.2, /gsbifrdata/9may/18_063_09may2010_gsb.lta.3, /gsbifrdata/9may/18_063_09may2010_gsb.lta.4 11. LogFlag File : /odisk/online1/logflags/18_063.FLAGS.3 ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 604.459 MHz ,RF2 : 604.459 MHz, SA1 : 0 dB, SA2 : 0 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 530 MHz, ILO2 : 530 MHz, IVLO1 : 74.459 MHz, IVLO2 : 74.459 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON 15. BB BW(KHz) & BB ALC : 2000 KHz, ON CORRELATOR SETTINGS : 16. Channels : 0:255:1 17. Frequency Parameters (TPA) : 604.459 604.459 530 530 74.459 74.459 18. Integration Time : 128 LTA ~ 16.908 Sec. 19. No of Antennas Working(Fringing) :28 20. Name of Non-Working Antennas (with reason for each) : C01 - OFF C00-USB -no fringe. 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 14:00 - 06:06 23. ONLINE Machine : Shivneri 24. Correlator Mode : UsbHighRes 25. Comments (During Observations) : 14:13 : started scan on 3C147 ~ 15mins. 14:31 : started command file. 16:25 : E-arm electrical power failure. 16:45 : E-arm started working. 17:13 : Command file stopped. 17:14 : Started scan on 3C147. 17:24 : Settings changed LO1 - 515 MHz. LO4 - 68 MHz. 17:26 : Started scan on 3C147. 17:39 : Started command file /odisk/gtac/cmd/nissim/1140+2643.cmd 19:40 : released for observation. 20:38 : E02 servo problem. 21:46 : Command file stopped. 21:50 : Started scan on 3C286 for 10mins. 22:04 : Restarted command file. 23:09 : Stopped command file. 23:10 : Settings changed LO1 - 535MHz LO4 - 75.7170 23:17 : Started scan on 3C286. 23:28 : Stopped scan. 23:30 : Started command file /odisk/gtac/cmd/nissim/1209+2547.cmd. 01:36 : Stopped command file. 01:38 : Started scan 3C286. 01:47 : Stopped scan. 01:48 : Settings changed L01 - 545MHZ LO4 - 63.8MHz 01:50 : Started scan on 3C286. 01:58 : Stopped scan. 02:00 : Started command file /odisk/gtac/cmd/nissim/1333+1649.cmd. 04:01 : Stopped command file. 04:02 : Settings changed LO1 - 515MHz LO4 - 74.85MHz 04:03 : Started scan on 3C286. 04:10 : Stopped scan. 04:13 : Started command file /odisk/gtac/cmd/nissim/1601+1357.cmd. 05:54 : Stopped command file. 05:57 : Started scan on 1822-096. 06:06 : Stopped scan & observation session.