GTAC Observation Log 1. Date : 13/08/2018 2. Observation Sr. No. : 10468 3. Observer : Rajeshwari Dutta, Raghunathan Srianand, Neeraj Gupta 4. Observer's Email : rdutta@eso.org, anand@iucaa.in, ngupta@iucaa.in 5. Project Name : GMRT search for OH absorption towards highly reddened quasars 6. Project Code : 34_022 7. Operator(s) : Deepak, Rupsing, Sachin, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/34_022/obs.cmd 9. LTA File : /gsbifrdata1/13aug/34_022_13aug2018.lta 10. LogFlag File : /odisk/online1/logflags/34_022.FLAGS.2, /odisk/online1/logflags/34_022.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 711.0535 MHz ,RF2 : 711.0535 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 650 MHz, ILO2 : 650MHz , IVLO1 : 61.0535 MHz, IVLO2 : 61.0535 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 16 MHz,ON, IF-CH2 : 4+14 dB, 16 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 : 16.666666 MHz 24. Final BW : 4 MHz; Step # 2 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 138.9465 28. LO5 -2 : 166.0535 29. Frequency Parameters (TPA) : 711.0535 711.0535 650 650 61.0535 61.0535 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : W01 : : Feed Jammed. S01 : : Phase and amplitude jump observed. S02 : : Phase and amplitude jump observed. C12 : : Servo Problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 13 Aug 2018 07:00:00 - 13 Aug 2018 16:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 07:00 : Started set-up. 07:27 : Started command file. "/odisk/gtac/cmd/34_022/obs.cmd" 11:00 : W01 Released for observation. 11:00 : W06 Taken for Mech Work. 11:00 : C12 Released for observation. 15:44 : Stopped command file. 15:49 : Started scan on 3C286. 16:00 : Stopped scan and observing session over.