GTAC Observation Log 1. Date : 28/04/2015 2. Observation Sr. No. : 7745 3. Observer : Poonam Chandra 4. Observer's Email : poonam@ncra.tifr.res.in 5. Project Name : Studying the extraordinary low-frequency emission variability in magnetic B-type star HD 133880 6. Project Code : 28_074 7. Operator(s) : Rupsing, Shilpa 8. Command File : /odisk/gtac/cmd/28_074/27to28apr15/obs.cmd 9. LTA File : /gsbifrdata/27apr/28_074_27apr2015.lta.1, 10. LogFlag File : /odisk/online1/logflags/28_074.FLAGS.7 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1371 MHz ,RF2 : 1371 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1320 MHz, ILO2 : 1320MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1 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 : 33.333333 MHz 24. Final BW : 33.333333 MHz; Step # 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 1371 1371 1320 1320 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : W03 PC104 installation. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 27 Apr 2015 22:35:00 - 28 Apr 2015 03:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 22:35 : Started settings. 22:52 : Started scan on 3C286. 23:03 : Stopped scan. 23:14 : Started command file. --------------------------------------------------------------------------- 23:18 : Scintillation on phase cal. --------------------------------------------------------------------------- 02:39 : Stopped command file. 02:45 : Started scan on 3C286. 03:00 : Stopped scan and observation session over.