GTAC Observation Log 1. Date : 25/12/2016 2. Observation Sr. No. : 9091 3. Observer : Gu, HIROKI AKAMATSU, Shimwell, Huib T Intema, Francesco deGasperin, Viral Parekh, Francois Mernier, Junjie Mao, Igone Urdampilleta, Jelle de Plaa, Huub Rottgering, Jelle Sjerp Kaastra 4. Observer's Email : l.gu@sron.nl, h.akamatsu@sron.nl, shimwell@strw.leidenuniv.nl, intema@strw.leidenuniv.nl, astro@voo.it, viral.iucaa@gmail.com, F.Mernier@sron.nl, j.mao@sron.nl, mao@mail.strw.leidenuniv.nl, J.de.Plaa@sron.nl, rottgering@strw.leidenuniv.nl, j.kaastra@sron.nl 5. Project Name : Radio Structures in a Newly-Discovered Early-Stage Major Merger 6. Project Code : 31_079 7. Operator(s) : Pramod, Rupsing, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/31_079/25dec16/obs_25dec.cmd 9. LTA File : /gsbifrdata1/25dec/31_079_25dec2016.lta 10. LogFlag File : /odisk/online1/logflags/31_079.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255MHz , 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_lenyadri 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) : 306 306 255 255 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : C12 : Servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 25 Dec 2016 12:50:00 - 25 Dec 2016 21:03:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :30 37. Comments (During Observations) : 12:50 : Started settings. 13:00 : Started scan on 3C468.1. 13:11 : Stopped scan. 13:21 : '/odisk/gtac/cmd/31_079/25dec16/obs_25dec.cmd' command file started. 13:55 : C08 automatically got abc reset. 14:21 : C08 started working. 15:22 : C12 servo problem solved. 17:09 : Stopped command file. 17:18 : C12 applied brakes. 17:18 : W06 applied brakes. 17:18 : Started scan on 3C48 for 10 min. 17:28 : Stopped scan and restarted command file. 17:28 : W06 servo problem solved. 18:36 : C12 servo problem solved. 19:47 : C08 got ABC reset. 20:32 : C08 problem got solved. 20:44 : Stopped command file after phase cal. 20:45 : Started scan on 3C48. 21:00 : Stopped scan on 3C48 and closed observation session.