GTAC Observation Log 1. Date : 01/01/2011 2. Observation Sr. No. : 5173 3. Observer : Jayaram Chengalur, Elizabeth A.K. Adams 4. Observer's Email : chengalu@ncra.tifr.res.in,betsey@astro.cornell.edu 5. Project Name : LargeGalaxies 6. Project Code : 19_005 7. Operator(s) : Manisha, Rupsingh, Sachin, Santaji, Shilpa 8. Command File : /odisk/gtac/cmd/19_005/agc188749.cmd, /odisk/gtac/cmd/19_005/agc7686.cmd 9. LTA File : 10. GSB File : /gsbifrdata/1jan/19_005_01jan2011_gsb.lta, /gsbifrdata/2jan/19_005_02jan2011_gsb.lta 11. LogFlag File : /odisk/online1/logflags/19_005.FLAGS.1, /odisk/online1/logflags/19_005.FLAGS.9 ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 1370 MHz ,RF2 : 1370 MHz, SA1 : 0 dB, SA2 : 0 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 1300 MHz, ILO2 : 1300 MHz, IVLO1 : 70 MHz, IVLO2 : 70 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON 15. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : GHB Settings : 16. GHB Channels : 0:127:1 17. Correlator Mode : IndianPolar 18. Frequency Parameters (TPA) : 1370 1370 1300 1300 70 70 GSB Settings : 19. Maximum Channels : 512 20. Final Bandwidth (MHz): 4 MHz; Step # 2 21. IFBW (MHz) : LO5 (KHz) : Custom :- 16 : 140000 - 165000 22. Stokes : Total_Intensity 23. Beam - 1 : OFF 24. Beam - 2 : OFF 25. Integration Time : 128 LTA ~ 16.908 Sec. 26. No of Antennas Working(Fringing) :29 27. Name of Non-Working Antennas (with reason for each) : C11 : ABC time out. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 20:00 - 11:57 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 19:56 : Started scan on 3C48. 20:46 : Stopped scan. 20:50 : Started command file '/odisk/gtac/cmd/19_005/agc188749.cmd' 03:38 : Stopped command file. 03:40 : Started scan on phase cal. 03:51 : Started scan on 3C147 for 8 mins. 03:59 : Stopped scan on 3C147. ************************************************ Settings Changed. LO1 = 1315 GSB 5th LO1=139.5 MHz. GSB 5th LO2=165.5 MHz. Final BW = 4 MHz and **step 2** 04:15 : Completed settings. NOTE : Lost 1 hour due to starting probles in GSB correlator chain. 05:15 : Started scan on 3C147 for 8 mins. 05:35 : Scan no. 1 is bad only 2 records. 05:39 : Started command file /odisk/gtac/cmd/19_005/agc7686.cmd. 07:42 : C11 started working. 08:56 : C00 taken for painting. 09:01 : C03 taken for painting. 11:32 : Stopped command file. 11:34 : Started scan on 3C286. 11:57 : Stopped scan and observing session over.