GTAC Observation Log 1. Date : 17/2/2012 2. Observation Sr. No. : 5829 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) : Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/roy/gc.var.src.04feb12.cmd 9. LTA File : /gsbifrdata/17feb/21_065_17feb2012.lta 10. LogFlag File : /odisk/online1/logflags/21_065.FLAGS.14 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 : OFF 17. Stokes : Total_Intensity 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 : 16.106 Sec. 26. No of Antennas Working(Fringing) :28 27. Name of Non-Working Antennas (with reason for each) : W06 : Servo problem. C04 : 175pol power level fluctuations. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 07:30 - 12:04 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 07:30 : Started settings. 07:55 : Power equilised on G0.0+0 @ 450counts. Halted GSB and restarted with full stokes and gain eq. on. 08:02 : '/odisk/gtac/cmd/roy/gc.var.src.04feb12.cmd' command file started. 08:52 : S03 taken for painting. 09:34 : W03 taken for painting. 11:38 : S06 taken for painting. 11:50 : Stopped command file. 11:57 : Started scan on 3C48. 12:04 : Stopped scan and observing session over.