GTAC Observation Log 1. Date : 02/12/2012 2. Observation Sr. No. : 6254 3. Observer : Sumana Nandi 4. Observer's Email : djs@ncra.tifr.res.in,sumana1981@gmail.com 5. Project Name : A multifrequency study of a new sample of double-double radio galaxies (DDRGs) 6. Project Code : 23_056 7. Operator(s) : Navanath, Pramod, 8. Command File : /odisk/gtac/cmd/sumana/sumana_s3.cmd, /odisk/gtac/cmd/sumana/sumana_s6.cmd 9. LTA File : /gsbifrdata/02dec/23_056_02dec2012.lta, /gsbifrdata/02dec/23_056_02dec2012_s6.lta 10. LogFlag File : /odisk/online1/logflags/23_056.FLAGS.2 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 : 8.053 Sec. 26. No of Antennas Working(Fringing) :27 27. Name of Non-Working Antennas (with reason for each) : W05 : MCH maintenance. S03 : Servo maintenance. E02 : Fringe fluctuation. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 22:30 - 09:15 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 22:30 : Started setting for 610MHz. 22:39 : Started scan on 3C147. 23:01 : Stopped scan on 3C147 & started command file. /odisk/gtac/cmd/sumana/sumana_s3.cmd 03:43 : Started scan on 3C147 for 15min. 04:00 : cmd file closed. 04:11 : Started cmd file. /odisk/gtac/cmd/sumana/sumana_s6.cmd 08:46 : Stopped command file. 08:53 : Started scan on 3C286. 09:15 : Observation stopped.