GTAC Observation Log 1. Date : 07/1/2013 2. Observation Sr. No. : 6315 3. Observer : Ruta Kale,T. Venturi 4. Observer's Email : rkale@ira.inaf.it,ruta.kale@gmail.com,tventuri@ira.inaf.it 5. Project Name : Spectra of cluster radio halos 6. Project Code : 23_023 7. Operator(s) : Navanath, Pramod, 8. Command File : /odisk/gtac/cmd/ruta/23_023/a665-7jan13.cmd 9. LTA File : /gsbifrdata/07jan/23_023_07jan2013.lta 10. LogFlag File : /odisk/online1/logflags/23_023.FLAGS.2 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 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 : 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) : 306 306 255 255 51 51. 25. Integration Time : 16.106 Sec. 26. No of Antennas Working(Fringing) :26 27. Name of Non-Working Antennas (with reason for each) : C12 : Servo problem. W05 : Mech Maintenance. S01 : BLDC work. C06 : Low fringe 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 19:30 - 07:00 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 19:30 : Started set up for 325MHz. 19:55 : Started scan on 3C48. 20:11 : Stopped scan on 3C48 & started command file. '/odisk/gtac/cmd/ruta/23_023/a665-7jan13.cmd' 20:15 : S04 servo problem. 03:36 : E-arm power failure. 03:38 : e02 and E03 has ups backup 04:00 : E-arm power resumed. 06:43 : Started scan on flux cal for 25min. 07:08 : observation session over.