GTAC Observation Log 1. Date : 25/05/2018 2. Observation Sr. No. : 10284 3. Observer : Filippo Fraternali, Marc Verheijen, Claudio Grillo, Federico Lelli, Jayaram Narayanan Chengalur, Nissim Kanekar, Enrico DiTeodoro 4. Observer's Email : fraternali@astro.rug.nl, verheyen@astro.rug.nl, claudio.grillo@unimi.it, flelli@eso.org, chengalur@ncra.tifr.res.in, nkanekar@ncra.tifr.res.in, enrico.diteodoro@anu.edu.au 5. Project Name : A gift from Nature: detecting HI in a gravitationally lensed spiral galaxy at z=1.5 6. Project Code : 34_012 7. Operator(s) : Nilesh, Sachin 8. Command File : /odisk/gtac/cmd/nissim/sp1149.cmd 9. LTA File : /gsbifrdata1/25may/34_012_25may2018_gsb.lta, /gwbifrdata/25may/34_012_25may2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/34_012.FLAGS.4 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 556 MHz ,RF2 : 556 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 505 MHz, ILO2 : 505MHz , 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 : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 556 556 505 505 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) : C05 : Painting work. S02 : Painting work. W02 : Servo Problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 25 May 2018 14:50:00 - 25 May 2018 23:05:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 14:50 : Started settings. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 8192 GPU_CHAN_NUM : 0:8191:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 520 520 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 34_012 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 128 GPU_GAINEQ : OFF -------------------------------- 15:04 : Started scan on 3C147 for ~ 10min. 15:14 : Stopped scan and started command file. /odisk/gtac/cmd/nissim/sp1149.cmd 15:18 : Online USER and SUBARRAY controller crashed. 15:28 : Restarted online USER and SUBARRAY controller. 15:33 : Re-started command file. /odisk/gtac/cmd/nissim/sp1149.cmd 18:05 : C05 released for observation. 18:25 : S02 released for observation. 22:46 : Stopped command file. 22:47 : Started scan on 1143+221 for ~ 3min. 22:53 : Started scan on 3C286 for ~ 10 min. 23:02 : Stopped scan and observation closed.