GTAC Observation Log 1. Date : 13/05/2015 2. Observation Sr. No. : 7775 3. Observer : Roger Paul Deane, Ian Heywood, Danail Obreschkow 4. Observer's Email : roger.deane@astro.ox.ac.uk, ian.heywood@csiro.au, danail.obreschkow@gmail.com 5. Project Name : Strong gravitational lensing: an unexplored view of intermediate redshift HI 6. Project Code : 28_100 7. Operator(s) : Navnath, Rupsing, Surender 8. Command File : /odisk/gtac/cmd/28_100/12may15/obs.cmd 9. LTA File : /gsbifrdata1/12may/28_100_12may2015_4s.lta 10. LogFlag File : /odisk/online1/logflags/28_100.FLAGS.3 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1041 MHz ,RF2 : 1041 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 990 MHz, ILO2 : 990MHz , 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, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1 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 : 33.333333 MHz; Step # 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 1041 1041 990 990 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C12 : Electrical problem. W01 : Servo time out. S04 : BLDC. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 12 May 2015 18:00:00 - 13 May 2015 03:01:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 18:13 : Started scan on 3C286. 18:26 : Stopped scan. 18:30 : Started command file. -------------------------------------------------------------------------- 19:53 : W01 started working. -------------------------------------------------------------------------- 23:17 : W02 Servo time-out. 02:44 : Stopped command file. 02:46 : Started scan on 3c286. 03:01 : Stopped scan and observing session is over.