GTAC Observation Log 1. Date : 14/12/2012 2. Observation Sr. No. : 6270 3. Observer : Somak Raychaudhury 4. Observer's Email : somak@star.sr.bham.ac.uk 5. Project Name : Abell 520: Radio Halo, S-Z map, NAT Sources in an Extreme Merging Galaxy Cluster (repeat observation) 6. Project Code : 23_015 7. Operator(s) : Deepak, Rupsingh, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/somak/23_015/23_015.cmd 9. LTA File : /gsbifrdata/14dec/23_015_14dec2012.lta 10. LogFlag File : /odisk/online1/logflags/23_015.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) :28 27. Name of Non-Working Antennas (with reason for each) : W05 : Mechanical maintenance. S01 : BLDC. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 18:45 - 03:03 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 18:49 : Started scan on 3C48. 19:08 : Stopped scan. 19:13 : Started command file. 02:44 : Stopped command file. 02:47 : Started scan on 3C147. 03:03 : Stopped scan & Observing session is over.