GTAC Observation Log 1. Date : 27/2/2014 2. Observation Sr. No. : 6979 3. Observer : Paulina Anna Sowicka,Marek Jamrozy,Sandeep K. Sirothia 4. Observer's Email : paula695@gmail.com,jamrozy@oa.uj.edu.pl,sirothia@ncra.tifr.res.in 5. Project Name : Low-frequency high-dynamical range radio observations of a new double-double radio galaxy candidate 6. Project Code : 25_001 7. Operator(s) : Navanath,Pramod,Rupsingh, 8. Command File : /odisk/gtac/cmd/sirothia/25_001_20140227.cmd 9. LTA File : /gsbifrdata/27feb//25_001_27feb2014_2s.lta,/gsbifrdata/27feb//25_001_27feb2014_16s.lta, 10. LogFlag File : /odisk/online1/logflags/25_001.FLAGS.3, ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218 MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 10+12 dB, 16 MHz,ON, IF-CH2 : 10+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 : FullStokes 20. Beam - 1 : OFF 21. Beam - 2 : OFF 22. ACQ BW : 16.67 MHz 23. Final BW : 16.666666 MHz; Step # 0 24. Maximum Channels : 256 25. Channel Numbers : 0:255:1 26. LO5 -1 : 138.00 27. LO5 -2 : 167.00 28. Frequency Parameters (TPA) : 156 156 218 218 62 62. 29. Integration Time : 2.013264 Sec. 30. No of Antennas Working(Fringing) at the begining :28 31. Name of Non-Working Antennas (with reason for each) : C06 : ABC time out. E02 : No feed. 32. Note for Backup : 33. Start and End Time of Obs.(IST): 21:20 - 07:00 34. ONLINE Machine : Lenyadri 35. No of Antennas Working(Fringing) at the end :28 36. Comments (During Observations) : 21:30 : Started scan on 3C147. 21:38 : Scintillation going on. 21:44 : Stopped scan. 21:46 : Started scan on J0218+4232. 22:00 : Stopped scan. 22:04 : Started command file. 23:37 : scan stopped, cmd file stopped, track change outer to inner. 23:53 : restarted command file. 03:43 : cmd file stopped, track change. 04:00 : Restarted cmd file. 06:32 : cmd file stopped, started scan on phase cal. 06:39 : Started scan on flux cal for 15min. 07:00 : Observing session over.