GTAC Observation Log 1. Date : 19/1/2013 2. Observation Sr. No. : 6334 3. Observer : Dharam Vir Lal,Reinout van Weeren 4. Observer's Email : dharam@ncra.tifr.res.in,rvanweeren@cfa.harvard.edu 5. Project Name : GMRT distant radio halo and relic survey 6. Project Code : 23_013 7. Operator(s) : Deepak, Pramod, Rupsingh, Sachin, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/dharam/23_013_19jan.cmd, /odisk/gtac/cmd/dharam/23_013_20jan.cmd, /odisk/gtac/cmd/dharam/23_013_20jan_1.cmd, /odisk/gtac/cmd/dharam/23_013_20jan_2.cmd 9. LTA File : /gsbifrdata1/19jan/23_013_19jan2013.lta, /gsbifrdata1/19jan/23_013_19jan2013_8s.lta, /gsbifrdata1/20jan/23_013_20jan2013_macsj2129.lta, /gsbifrdata1/20jan/23_013_20jan2013_PL208.lta, 10. LogFlag File : /odisk/online1/logflags/23_013.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540 MHz , IVLO1 : 51 MHz, IVLO2 : 51 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 GSB SETTINGS : 14. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Total_Intensity 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. ACQ BW : 32 MHz 21. Maximum Channels : 256 22. IFBW (MHz) : LO5 (KHz) : 32:149000-156000 23. Final Bandwidth (MHz): OFF MHz; Step # 0 24. Frequency Parameters (TPA) : 591 591 540 540 51 51. 25. Integration Time : 8.053 Sec. 26. No of Antennas Working(Fringing) :25 27. Name of Non-Working Antennas (with reason for each) : W05 : Mechanical maintenance. S01 : BLDC work C06,C08,C12 - painting. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 14:30 - 23:00 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : *19/01/2013* 14:30 : Started setting for 610Mhz. 14:52 : Started scan on 3C48. 15:12 : Stopped scan on 3C48 & started command file. '/odisk/gtac/cmd/dharam/23_013_19jan.cmd' 17:52 : C13 applied Az brakes. 17:54 : C06,C08,C12 released from painting & taken for observation. 18:51 : Stopped command file. 18:54 : Started scan on 3C48. 19:04 : Stopped scan on 3C48 & restarted command file. '/odisk/gtac/cmd/dharam/23_013_19jan.cmd' 23:21 : Stopped command file. 23:24 : Started scan on 3C147. 23:30 : Started new recording file. 23:45 : Stopped scan. Closed old recording file. 23:49 : Started command file. '/odisk/gtac/cmd/dharam/23_013_20jan.cmd' *Date 20/01/2013* 02:56 : W02 reset. 03:17 : W02 started working. 09:00 : Command file stopped. 09:01 : Started scan on 3C286 for 20mins. Also started new lta file. /gsbifrdata1/20jan/23_013_20jan2013_macsj2129.lta 09:15 : C06 released for painting. 09:29 : Started command file /odisk/gtac/cmd/dharam/23_013_20jan_1.cmd' 15:19 : S-arm power failure. 15:21 : stopped command file. 15:29 : Started command file 3C48. 15:35 : S-arm antenna's started working and taken for observation. 15:43 : Stopped scan on 3C48 & started new command file. '/odisk/gtac/cmd/dharam/23_013_20jan_2.cmd' 20:10 : S04 ABC time out. 21:20 : S04 started working. 22:38 : Stopped command file. 22:41 : Started scan on 3C48. 23:00 : Stopped scan on 3C48 & observation session is over.