GTAC Observation Log 1. Date : 18/12/2012 2. Observation Sr. No. : 6280 3. Observer : Roger Deane 4. Observer's Email : roger.deane@astro.ox.ac.uk,viral.iucaa@gmail.com 5. Project Name : Low frequency spectral indices of binary Super-Massive Black Hole Candidates 6. Project Code : 23_053 7. Operator(s) : Deepak, Manisha, Nilesh, 8. Command File : /odisk/gtac/cmd/23_053/obs.cmd 9. LTA File : /gsbifrdata/17dec/23_022_17dec2012.lta 10. LogFlag File : /odisk/online1/logflags/23_053.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540 MHz , 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 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 : 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) : 591 591 540 540 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) : W05 : Mechanical maintenance. S01 : BLDC. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 01:20 - 09:15 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 01:20 : Started settings for observation. 02:00 : Started scan on 3c147 for 15min. 02:24 : Started command file. 07:11 : Command file stopped. 07:13 : Started command file obs2.cmd. 08:52 : Command file stopped. 08:55 : E02 parked painting. 08:58 : Started scan on 3C286 for 15mins. 09:15 : Observation stopped.