GTAC Observation Log 1. Date : 3/2/2014 2. Observation Sr. No. : 6940 3. Observer : Eric Wilcots,Danielle M. Nielsen 4. Observer's Email : ewilcots@astro.wisc.edu,nielsen@astro.wisc.edu 5. Project Name : Probing the Baryon Content of Galaxy Groups Using Bent Double Radio Sources 6. Project Code : 25_033 7. Operator(s) : Deepak,Shilpa, 8. Command File : /odisk/gtac/cmd/25_033/20140203/obs.cmd 9. LTA File : /gsbifrdata/03feb/25_033_03feb2014.lta, 10. LogFlag File : /odisk/online1/logflags/25_033.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, 16 MHz,ON GSB SETTINGS : 14. GSB Mode : Realtime 15. GSB LTA : 8 16. GSB CTRL : ONLINE 17. GSB Fstop : ON 18. GAIN EQ : ON 19. Stokes : TotIntensity 20. Beam - 1 : OFF 21. Beam - 2 : OFF 22. ACQ BW : 33.33 MHz 23. Final BW : 33.333333 MHz; Step # 0 24. Maximum Channels : 256 25. Channel Numbers : 0:255:1 26. LO5 -1 : 149.00 27. LO5 -2 : 156.00 28. Frequency Parameters (TPA) : 629 253 680 304 51 51. 29. Integration Time : 16.106112 Sec. 30. No of Antennas Working(Fringing) at the begining :28 31. Name of Non-Working Antennas (with reason for each) : C10 : No fringe. C14 : No feed @ 610MHz. 32. Note for Backup : 33. Start and End Time of Obs.(IST): 18:00 - 06:00 34. ONLINE Machine : Lenyadri 35. No of Antennas Working(Fringing) at the end :28 36. Comments (During Observations) : 18:00 : Started settings. 18:14 : Started scan on 3C147. 18:30 : Stopped scan. C10 started working for only 610MHz. 18:33 : '/odisk/gtac/cmd/25_033/20140203/obs.cmd' command file started. 21:00 : S02 abc timeout. 21:24 : S02 started working. 05:45 : command file stopped. 05:56 : Started scan on 3C286 for 15mins. 06:03 : Observation stopped. NOTE : Phase winding seen over 12Hrs observation slot, in arm antennas, may be Ionospheric activity. Also, scintillation observed during 21Hrs IST to 23Hrs IST.