GTAC Observation Log 1. Date : 14/9/2012 2. Observation Sr. No. : 6159 3. Observer : Jayaram Chengalur 4. Observer's Email : chengalu@ncra.tifr.res.in 5. Project Name : LSB0911 6. Project Code : 12DT033 7. Operator(s) : Nilesh, Pramod, Rupsingh, Sachin, Shilpa, 8. Command File : /odisk/gtac/cmd/chengalu/lsb0911.cmd 9. LTA File : /gsbifrdata/14sep/12dt033_14sep2012_8s.lta, /gsbifrdata/14sep/12dt033_14sep2012.lta 10. LogFlag File : /odisk/online1/logflags/12DT033.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1401.4335 MHz ,RF2 : 1401.4335 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1340 MHz, ILO2 : 1340 MHz , IVLO1 : 61.4335 MHz, IVLO2 : 61.4335 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Total_Intensity 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. ACQ BW : 16 MHz 21. Maximum Channels : 512 22. IFBW (MHz) : LO5 (KHz) : Custom :- 16 : 138.56 - 166.43 23. Final Bandwidth (MHz): 4 MHz; Step # 2 24. Frequency Parameters (TPA) : 1401.4335 1401.4335 1340 1340 61.4335 61.4335. 25. Integration Time : 16.106 Sec. 26. No of Antennas Working(Fringing) :27 27. Name of Non-Working Antennas (with reason for each) : C03 : Maintenance. C09,S01 : Low fringe. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 11:55 - 15:30 30. ONLINE Machine : Shivneri 31. Comments (During Observations) : RF band= 1390 (1330 - 1450) LO1= 1340 (lower) IFBW= 18 GSB [ACQ] BW= 16.6666 Total Channel= 512 Line/Center Frequency= 1411.85 CH#[0]= 1409.7667 CH#[512]= 1413.9333 BW= +4.1666 CW= 8.14 (KHz.) Digital SubBand/step#= 2 is USEABLE ### GSB_CONFIG LO5= 138.5665 166.4335 LTA_FILE L05= 130.2333 174.7667 BASE_BAND LO4= 61.4335 61.4335 tpa 1401.4335 1401.4335 1340 1340 61.4335 61.4335 ---------------------------------------------------------------------- 11:55 : Started settings. 12:09 : Started scan on 3C286. 12:19 : Stopped scan. 12:24 : '/odisk/gtac/cmd/chengalu/lsb0911.cmd' command file started. 13:14 : C13 no fringe. ### WARNING !!! #### PARK ARRAY : Wind speed high 14:40:46 SpotWind >= 35.0 kmph : S04 (39.0,42.0) ### WARNING !!! #### PARK ARRAY : Wind speed high 14:40:48 SpotWind >= 35.0 kmph : S04 (41.0,43.0) ### WARNING !!! #### PARK ARRAY : Wind speed high 14:40:50 SpotWind >= 35.0 kmph : S04 (44.0,40.0) 14:40 : Stopped command file and parked the whole array due to high wind. 15:14 : WIND SPEED NORMAL, Started scan on phase cal for ~5min. 15:24 : Started scan on 3c286 for ~15min. 15:39 : Stopped scan and closed observation session.