GTAC Observation Log 1. Date : 18/01/2016 2. Observation Sr. No. : 8340 3. Observer : Neeraj Gupta, Rajeshwari Dutta, Raghunathan Srianand, Ayanda Romanis Zungu 4. Observer's Email : ngupta@iucaa.ernet.in, rdutta@iucaa.ernet.in, anand@iucaa.ernet.in, arzngu@gmail.com 5. Project Name : HI 21-cm absorption associated with major mergers 6. Project Code : 29_079 7. Operator(s) : Navnath, Nilesh, Pramod, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/29_079/17jan16/obs.cmd,, /odisk/gtac/cmd/29_079/18jan16/s4/obs.cmd,, /odisk/gtac/cmd/29_079/18jan16/s5/obs.cmd, 9. LTA File : /gsbifrdata1/17jan/29_079_17jan2016.lta, /gsbifrdata1/18jan/29_079_18jan2016.lta.1, /gsbifrdata1/18jan/29_079_18jan2016.lta 10. LogFlag File : /odisk/online1/logflags/29_079.FLAGS.2, /odisk/online1/logflags/29_079.FLAGS.1, /odisk/online1/logflags/29_079.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1392.2029 MHz ,RF2 : 1392.2029 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1330 MHz, ILO2 : 1330MHz , IVLO1 : 62.2029 MHz, IVLO2 : 62.2029 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 : 16.666666 MHz 24. Final BW : 4 MHz; Step # 4 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 137.7971 28. LO5 -2 : 167.2029 29. Frequency Parameters (TPA) : 1392.2029 1392.2029 1330 1330 62.2029 62.2029 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :22 32. Name of Non-Working Antennas (with reason for each) : C03 : : BLDC C12 : : CST Painting S04,S06 : Fiber Cut S03 : : No fringe.(MCM-5 Timeout) C01 : : Low fringe @ 1390 MHz. E06 : : Low Fringe @ 1390 MHz. W06 : : Low Fringe @175 pol. W01 : : W01 Low fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 17 Jan 2016 19:00:00 - 18 Jan 2016 09:11:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :23 37. Comments (During Observations) : 19:00 : Started setup. RF band= 1390 (1330 - 1450) LO1= 1330 (lower) IFBW= 18 GSB [ACQ] BW= 16.6666 Total Channel= 512 Line/Center Frequency= 1398.4528 CH#[0]= 1400.5361 CH#[512]= 1396.3695 BW= -4.1666 CW= 8.14 (KHz.) step#= 1 is USEABLE ### GSB_CONFIG LO5= 137.7971 167.2029 LTA_FILE L05= 129.4639 175.5361 BASE BAND LO4= 62.2029 62.2029 tpa 1392.2029 1392.2029 1330 1330 62.2029 62.2029 19:20 : Started scan on 3c147 for 10min. 19:32 : Started cmd file. /odisk/gtac/cmd/29_079/17jan16/obs.cmd 19:45 : S04,S06 released for observation 23:25 : Stopped command file. 23:27 : Started scan on 3c147 for ~ 13 min. 23:40 : Stopped scan, and changed settings. RF band= 1390 (1330 - 1450) LO1= 1315 (lower) IFBW= 18 GSB [ACQ] BW= 16.6666 Total Channel= 512 Line/Center Frequency= 1382.6605 CH#[0]= 1384.7438 CH#[512]= 1380.5772 BW= -4.1666 CW= 8.14 (KHz.) step#= 1 is USEABLE ### GSB_CONFIG LO5= 138.5894 166.4106 LTA_FILE L05= 130.2562 174.7438 BASE BAND LO4= 61.4106 61.4106 tpa 1376.4106 1376.4106 1315 1315 61.4106 61.4106 23:46 : Started scan on 3c147 for ~ 25 min. NOTE : Source rising @ 00:29 IST, so continued scan on 3c286. 00:22 : Started command file. /odisk/gtac/cmd/29_079/18jan16/s4/obs.cmd 04:11 : Stopped command file. 04:16 : Started scan on 3c286 for ~ 12 min. 04:28 : Stopped scan, and changed settings. RF band= 1390 (1330 - 1450) LO1= 1280 (lower) IFBW= 18 GSB [ACQ] BW= 16.6666 Total Channel= 512 Line/Center Frequency= 1352.3101 CH#[0]= 1350.2268 CH#[512]= 1354.3934 BW= +4.1666 CW= 8.14 (KHz.) step#= 2 is USEABLE ### GSB_CONFIG LO5= 138.1064 166.8936 LTA_FILE L05= 129.7732 175.2268 BASE BAND LO4= 61.8936 61.8936 tpa 1341.8936 1341.8936 1280 1280 61.8936 61.8936 04:35 : Started scan on 3c286 for ~ 12 min. 04:49 : Started command file. /odisk/gtac/cmd/29_079/18jan16/s5/obs.cmd 09:00 : Stopped command file. 09:01 : Started scan on 3C286. 09:01 : W01 Low fringe. 09:11 : Stopped scan and observing session is over.