GTAC Observation Log 1. Date : 30/7/2011 2. Observation Sr. No. : 5479 3. Observer : Sandeep Sirothia 4. Observer's Email : sirothia@ncra.tifr.res.in 5. Project Name : The GMRT extra-galactic sky survey at 150 MHz - TGSS 6. Project Code : 20_083 7. Operator(s) : Deepak, Rupsingh, Santaji, 8. Command File : /gtac/cmd/sirothia/20_083_20110730a.cmd 9. LTA File : /gsbifrdata/30jul/20_083_30jul2011.lta 10. LogFlag File : /odisk/online1/logflags/11DT028.FLAGS 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. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Full_Polar 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. ACQ BW : 16 MHz 21. Maximum Channels : 256 22. IFBW (MHz) : LO5 (KHz) : 16:138000-167000 23. Final Bandwidth (MHz): OFF MHz; Step # 0 24. Frequency Parameters (TPA) : 156 156 218 218 62 62. 25. Integration Time : 16.106 Sec. 26. No of Antennas Working(Fringing) :30 27. Name of Non-Working Antennas (with reason for each) : -- 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 08:00 - 06:00 30. ONLINE Machine : Shivneri 31. Comments (During Observations) : 2S Data File : /gsbifrdata1/30jul/20_083_30jul2011_2s.lta -------------------------------------------------- 19:48 : Started scan on 3C286. 20:10 : Stopped scan 20:16 : '/gtac/cmd/sirothia/20_083_20110730a.cmd' command file started. 23:35 : Stopped command file, and started b.cmd command file. 23:54 : W02 started giving servo problem, it stopped tracking. 02:55 : Stopped command file and started c.cmd command file. 05:20 : Stopped command file. 05:30 : Started scan on J calibrator. 06:00 : Stopped scan on J calibrator. 06:03 : Started scan on 3C48. 06:16 : Stopped scan on 3C48 and observation sessioin over.