GTAC Observation Log 1. Date : 24/07/2009 2. Observation Sr. No. : 4429 3. Observer : Nirupam Roy,Chandreyee Sengupta 4. Observer's Email : nirupam@ncra.tifr.res.in,sengupta@ncra.tifr.res.in 5. Project Name : GRP-S1 6. Project Code : 16_127 7. Operator(s) : Jayprakash, Rupsingh, Sachin, Santaji, Shilpa 8. Command File : /odisk/gtac/cmd/csg/group-relic-s1.cmd 9. LTA File : /rawdata/24jul/16_127_24jul2009.lta, /rawdata1/24jul/16_127_24jul2009.ltb 10. LogFlag File : /odisk/online1/logflags/16_127.FLAGS ANTENNA SETTINGS : 11. RF Freq(MHz) & Solar Attn(dB)- RF1 : 325 MHz ,RF2 : 325 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 255 MHz, ILO2 : 255 MHz, IVLO1 : 70 MHz, IVLO2 : 70 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 32 MHz,ON 14. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 325 325 255 255 70 70 18. Integration Time : 128 LTA ~ 16.908 Sec. 19. No of Antennas Working(Fringing) :27 20. Name of Non-Working Antennas (with reason for each) : S06 : Servo problem. W01 : MCM 5 time out. W05 : Strong RFI lines. 21. Note for Backup : -- 22. Start and End Time of Obs.(IST): 08:00 - 18:06 23. ONLINE Machine : Shivneri 24. Correlator Mode : IndianPolar 25. Comments (During Observations) : 08:00 : Setup started. 08:13 : Scan started on 3C147. 08:28 : Command file started. 10:12 : Many antennas shows high wind >=40kmph and some antenna W04,W05,S03,S04 are getting parked so stopped the observation parked all antennas. 11:10 : Wind speed looks normal ; restarted the observation. 11:50 : Stopped the observation due to high wind speed and parked the antennas. 13:59 : Wind speed looks normal, started scan on 3C286. 14:10 : Stopped scan. 14:14 : Restarted command file. 14:22 : Stopped command file due to high wind. 17:39 : Wind speed looks normal, started scan on 3C286. 18:06 : Stopped scan and observing session over.