GTAC Observation Log 1. Date : 27/1/2013 2. Observation Sr. No. : 6345 3. Observer : Annalisa Bonafede 4. Observer's Email : annalisa.bonafede@hs.uni-hamburg.de 5. Project Name : An unbiased census of giant radio halos in clusters of galaxies 6. Project Code : 23_020 7. Operator(s) : Deepak, Pramod, Sachin, Shilpa, 8. Command File : /odisk/gtac/cmd/23_020/27jan_00h.cmd, /odisk/gtac/cmd/23_020/27jan_07h.cmd, 9. LTA File : /gsbifrdata1/27jan/23_020_27jan2013.lta, /gsbifrdata1/27jan/23_020_27jan2013.lta.1 10. LogFlag File : /odisk/online1/logflags/23_020.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255 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) : 306 306 255 255 51 51. 25. Integration Time : 8.053 Sec. 26. No of Antennas Working(Fringing) :28 27. Name of Non-Working Antennas (with reason for each) : S01 : S01 BLDC C06 : Low fringe. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 23:50 - 13:00 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 23:50 : Started Set up for 325MHz. 00:32 : Started scan on 3C147. 00:47 : Stopped scan on3C147 & started command file. '/odisk/gtac/cmd/23_020/27jan_00h.cmd' 06:40 : Stopped command file. 06:43 : Started scan on 3C286. 06:59 : Stopped scan. 07:02 : '/odisk/gtac/cmd/23_020/27jan_07h.cmd' command file started. 09:18 : C12 taken for painting. 10:14 : S01 started working. 12:42 : Stopped command file. 12:45 : Started scan on 3C48. 13:00 : Stopped scan and observing session over.