GTAC Observation Log 1. Date : 20/09/2014 2. Observation Sr. No. : 7362 3. Observer : BIJU.K.G, Joydeep Bagchi, Joe Jacob, C.H. IshwaraChandra, Pratik Anand Dabhade, Mamta Pandey-Pommier 4. Observer's Email : kgbiju42@gmail.com, joydeep@iucaa.ernet.in, joe@iucaa.ernet.in, ishwar@ncra.tifr.res.in, pratikdabhade13@gmail.com, mamtapan@gmail.com 5. Project Name : GMRT mapping of three gaint radio galaxies. 6. Project Code : 26_008 7. Operator(s) : Manisha, Navnath, Nilesh, Pramod 8. Command File : /odisk/gtac/cmd/26_008/obs_s1.cmd,,/odisk/gtac/cmd/26_008/obs_s3.cmd 9. LTA File : /gsbifrdata/20sep/26_008_20sep2014.lta 10. LogFlag File : /odisk/online1/logflags/26_008.FLAGS.9 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1281 MHz ,RF2 : 1281 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1230 MHz, ILO2 : 1230MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 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) : 1281 1281 1230 1230 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : C06 : No fringe (no lband feed) 33. Note for Backup : 34. Start and End Time of Obs.(IST): 20 Sep 2014 10:00:00 - 20 Sep 2014 20:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 10:08 : started scan on 3C286 ~12mins. 10:30 : commmand file started. 10:47 : C05 servo problem. 11:46 : MSEB Power failed for all antennas stopped das & command file. 11:52 : Electrical power resumed, Started settings. 12:12 : Started command file. 15:26 : Stopped command file and started command file. '/odisk/gtac/cmd/26_008/obs_s3.cmd' 20:50 : Scintillation appeared in the data. 21:00 : Stopped scan. 21:06 : Started scan on 3C48. 21:18 : Stopped scan and observation session is over.