GTAC Observation Log 1. Date : 27/05/2016 2. Observation Sr. No. : 8610 3. Observer : Veeresh Singh, C.H. IshwaraChandra, Preeti Kharb, Shweta Srivastava 4. Observer's Email : veeresh.iia@gmail.com, ishwar@ncra.tifr.res.in, preeti.kharb@gmail.com, srivashweta@gmail.com 5. Project Name : Probing multiple episodes of AGN activity in a newly discovered triple-double radio galaxy J1216\\+0709 using GMRT multi-frequency observations 6. Project Code : 30_041 7. Operator(s) : Nilesh, Pramod, Sachin 8. Command File : /odisk/gtac/cmd/30_041/obs.cmd 9. LTA File : /gsbifrdata1/27may/30_041_27may2016.lta 10. LogFlag File : /odisk/online1/logflags/30_041.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 : 540MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 33.333333 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 591 591 540 540 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C02 : Taken for BLDC C05 : Servo time out W06 : Low fringe to 175 pol 33. Note for Backup : 34. Start and End Time of Obs.(IST): 27 May 2016 18:00:00 - 27 May 2016 23:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 17:40 : Started set up. 17:51 : Started scan on 3C147 for 10 min. 18:01 : Stopped scan and started command file. '/odisk/gtac/cmd/30_041/obs.cmd' Note : W03 Fringe vanished automatically during observation. 23:24 : Stopped command file and stopped scan. 23:25 : Started scan on phase cal for ~ 5 min. 23:32 : Started scan on 3C286 for ~ 12 min. 23:45 : Closed observation.