GTAC Observation Log 1. Date : 17/5/2011 2. Observation Sr. No. : 5334 3. Observer : Sandeep Sirothia,Ishwar Chandra 4. Observer's Email : sirothia@ncra.tifr.res.in,ishwar@ncra.tifr.res.in 5. Project Name : Survey at 150 6. Project Code : 20_083 7. Operator(s) : Sachin, 8. Command File : /odisk/gtac/cmd/sirothia/20_083_20110517a.cmd, /odisk/gtac/cmd/sirothia/20_083_20110517b.cmd 9. LTA File : /gsbifrdata/17may/20_083_17may2011.lta 10. LogFlag File : /odisk/online1/logflags/20_083.FLAGS.11 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218 MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON GSB SETTINGS : 14. Maximum Channels : 256 15. Final Bandwidth (MHz): OFF MHz; Step # 0 16. IFBW (MHz) : LO5 (KHz) : 16:138000-167000 17. Stokes : Full_Polar 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. Frequency Parameters (TPA) : 156 156 218 218 62 62. 21. Integration Time : 16.106 Sec. 22. No of Antennas Working(Fringing) :29 23. Name of Non-Working Antennas (with reason for each) : W02 : Unstable fringes. 24. Note for Backup :-- 25. Start and End Time of Obs.(IST): 23:00 - 06:50 26. ONLINE Machine : Shivneri 27. Comments (During Observations) : --------------------------------------------------------- 2s Data file : /gsbifrdata1/17may/20_083_17may2011_2s.lta --------------------------------------------------------- 23:05 : Started scan on 3C286 for 15 mins. 23:25 : Started command file a.cmd. 02:15 : Phase cal 1311-222 set so changed comman file for phase cal 1830-360. Restarted command file. 02:16 : W02 stopped fringing. 02:55 : a.cmd completed 5 loops, stopped command file. 02:58 : Started b.cmd command file. 06:12 : b.cmd completed 5 loops, stopped command file. 06:29 : Started scan on J0218+4232 calibrator for 10 mins. 06:39 : Stopped scan on J0218+4232. 06:40 : Started scan on 3C48. 06:50 : Stopped scan on 3C48 and closed observation session.