GTAC Observation Log 1. Date : 12/08/2017 2. Observation Sr. No. : 9661 3. Observer : Nirupam Roy, Nissim Kanekar, Jayaram Narayanan Chengalur, Narendranath Patra 4. Observer's Email : roy.nirupam@gmail.com, nkanekar@ncra.tifr.res.in, chengalur@ncra.tifr.res.in, narendra@ncra.tifr.res.in 5. Project Name : The Temperature of the Warm Neutral Medium in the Milky Way 6. Project Code : 32_056 7. Operator(s) : Navnath, Pramod, Rupsing 8. Command File : /odisk/gtac/cmd/nissim/0405-131.cmd,, /odisk/gtac/cmd/nissim/0745\+101.cmd 9. LTA File : /gsbifrdata1/12aug/32_056_12aug2017.lta, /gwbifrdata1/12aug/32_056_12aug2017_1460_gwb.lta 10. LogFlag File : /odisk/online1/logflags/DDTB281.FLAGS.3 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1411 MHz ,RF2 : 1411 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1350 MHz, ILO2 : 1350MHz , IVLO1 : 61 MHz, IVLO2 : 61 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_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 : 2 MHz; Step # 4 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 139 28. LO5 -2 : 166 29. Frequency Parameters (TPA) : 1411 1411 1350 1350 61 61 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : W03 : Servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 12 Aug 2017 05:00:00 - 12 Aug 2017 15:55:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : ------------GWB Setting--------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 6.25 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 8192 GPU_CHAN_NUM : 0:8191:1 GPU_STOKES : 130; 2 Total_Intensity; 4 Full_Stokes GPU_SIDEBAND : 1 1 GPU_RF4 : 1460 1460 GPU_DDCLO4 : 36.75 36.75 GPU_SB4 : 1 1 GCODE4 : 32_056 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_1 : : GPU_BEAM_2 : : GPU_BM_INT : 128 GPU_GAINEQ : ON GPU_TPA : From GWB GUI. GPU_BITS : 32 inputs. GPU_FILRFI : RFI Filterring OFF -------------------------------------------------------------------------- ------------GSB Setting--------------------------------------------------- GSB_MODE : Realtime GSB_LTA : 8 GSB_ACQ_BW : 16.666666 GSB_FINAL_BW : 2 GSB_EDGE_FRQ : 4 GSB_CHAN_MAX : 512 GSB_CHAN_NUM : 0:511:1 GSB_STOKES : Total_Intensity GSB_CNTRL : ONLINE GSB_FSTOP : ON GSB_BEAM_1 : OFF GSB_BEAM_2 : OFF GSB_GAINEQ : ON GSB_BB_LO : 139:166 GSB_HOSTS : gsbm1_shivneri undefined : OFF undefined : 306 -------------------------------------------------------------------------- 05:10 : GSB setup done -------------------------------------------------------------------------- 05:20 : GWB setup done -------------------------------------------------------------------------- 05:23 : Power eq on 3C48 -------------------------------------------------------------------------- 05:25 : Started comanf file 10:00 : Stopped command file and started new command file. '/odisk/gtac/cmd/nissim/0745+101.cmd' Note : From 14:18 to 14:31 : Electrical power failure to West arm antennas. 15:38:00 : Stopped command file. 15:45:17 : Started scan on 3C286. 15:55:00 : Stopped scan and observing session over.