GTAC Observation Log 1. Date : 22/11/2012 2. Observation Sr. No. : 6236 3. Observer : Rathreya 4. Observer's Email : rkale@ira.inaf.it,rathreya@iiserpune.ac.in,ashwta@students.iiserpune.ac.in 5. Project Name : Extended GMRT Radio Halo Survey: Stage IV (final) 6. Project Code : 23_004 7. Operator(s) : Navanath, Rupsingh, Sachin, 8. Command File : /odisk/gtac/cmd/rathreya/23_004_a68_dual.cmd 9. LTA File : /gsbifrdata/22nov/23_004_22nov2012_16s.lta 10. LogFlag File : /odisk/online1/logflags/23_004.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 629 MHz ,RF2 : 253 MHz, SA1 : 0 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 680 MHz, ILO2 : 304 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) : 629 253 680 304 51 51. 25. Integration Time : 16.106 Sec. 26. No of Antennas Working(Fringing) :29 27. Name of Non-Working Antennas (with reason for each) : C10 : No fringe (175-pol)235Hz (No feed) E02 : No fringe (175-pol)235 No fringe. LO unlock 304Mhz ? 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 17:30 - 02:12 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 2s data file :- /gsbifrdata1/22nov/23_004_22nov2012_2s.lta ----------------------------------------------------------------------- 17:30 : Started setup for 23_004 17:52 : Started scan on 3C48 for 15min. 18:10 : scan stopped. 18:18 : Started cmd file. /odisk/gtac/cmd/rathreya/23_004_a68_dual.cmd 01:05 : Stopped command file as phase cal (i.e. 2340+135) set. 01:06 : Started command file with new phase cal (i.e. 0054-035). 01:51 : Stopped command file. 01:57 : Started scan on 3C147. 02:12 : Stopped scan on 3C147 and closed observation session.