GTAC Observation Log 1. Date : 13/3/2012 2. Observation Sr. No. : 5880 3. Observer : Subhashis Roy 4. Observer's Email : roy@ncra.tifr.res.in 5. Project Name : A Monitoring Program for Transient Radio Sources near the Galactic Center 6. Project Code : 21_065 7. Operator(s) : Manisha, Navanath, Sachin, 8. Command File : /odisk/gtac/cmd/roy/gc.var.src.11mar12.cmd 9. LTA File : /gsbifrdata/13mar/21_065_13mar2012_8s.lta 10. LogFlag File : /odisk/online1/logflags/21_065.FLAGS.19 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 14 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255 MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 24+4 dB, 32 MHz,OFF, IF-CH2 : 24+4 dB, 32 MHz,OFF GSB SETTINGS : 14. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Full_Polar 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. ACQ BW : 32 MHz 21. Maximum Channels : 256 22. IFBW (MHz) : LO5 (KHz) : 32:149000-156000 23. Final Bandwidth (MHz): OFF MHz; Step # 0 24. Frequency Parameters (TPA) : 306 306 255 255 51 51. 25. Integration Time : 8.053 Sec. 26. No of Antennas Working(Fringing) :29 27. Name of Non-Working Antennas (with reason for each) : C08 : Servo problem. C04-175 : No fringe. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 05:20 - 09:50 30. ONLINE Machine : Shivneri 31. Comments (During Observations) : 05:20 : Started settings. 05:30 : Started power eq on source G0+0 with gain off. 05:45 : Restarted corr in gain eq on and in fullpolar mode. 05:52 : Started cmd file. /odisk/gtac/cmd/roy/gc.var.src.11mar12.cmd 09:25 : command file stopped. 09:30 : S06 released for painting. 09:34 : started scan on 3C48 ~15mins. 09:50 : stopped das & observation sesion.