GTAC Observation Log 1. Date : 25/1/2013 2. Observation Sr. No. : 6344 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) : Navanath, Nilesh, Sachin, Shilpa, 8. Command File : /odisk/gtac/cmd/23_020/jan25_21h.cmd, /odisk/gtac/cmd/23_020/jan26_04h.cmd, 9. LTA File : /gsbifrdata1/25jan/23_020_25jan2013.lta, /gsbifrdata1/25jan/23_020_25jan2013.lta.1, /gsbifrdata1/26jan/23_020_26jan2013.lta 10. LogFlag File : /odisk/online1/logflags/23_020.FLAGS, 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 : 10+10 dB, 32 MHz,ON, IF-CH2 : 10+10 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) :27 27. Name of Non-Working Antennas (with reason for each) : W05 : Mechanical maintenance. S01 : S01 BLDc. C06 : Very Low Fringe. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 20:15 - 17:40 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 20:15 : Starting settings for 23_020 project 20:21 : Started scan on 3c147 for 20min 20:48 : Started command file. '/odisk/gtac/cmd/23_020/jan25_21h.cmd'. 21:20 : command file stopped, antenna track changed. 21:32 : Restarted command file with inner track. 03:31 : Stopped command file. 03:38 : Started scan on 3c286 for ~15min. 03:55 : Started scan on 1435+760. 04:00 : Stopped scan. 04:03 : Started scan on 3c286. 04;10 : Started next command file. '/odisk/gtac/cmd/23_020/jan26_04h.cmd'. 17:40 : Observing session over. ----------------------------------------------------------------