GTAC Observation Log 1. Date : 24/10/2011 2. Observation Sr. No. : 5583 3. Observer : Giulia Macario 4. Observer's Email : g.macario@ira.inaf.it 5. Project Name : Searching for Radio Halos in the MACS-Planck X-ray luminous cluster sample 6. Project Code : 21_042 7. Operator(s) : Nilesh, Santaji, 8. Command File : /odisk/gtac/cmd/21_042/21_042_24Oct11_obs.cmd, 9. LTA File : /gsbifrdata/24oct/21_042_24oct2011.lta, /gsbifrdata1/24oct/21_042_24oct2011_4s.lta 10. LogFlag File : /odisk/online1/logflags/21_042.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 14 dB, SA2 : 14 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) :28 27. Name of Non-Working Antennas (with reason for each) : C14 : Radio Interference. C08 : Servo problem. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 20:00 - 05:20 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 19:30 : Scintillation @ 325MHz. 20:00 : Started settings for observation. 20:13 : Started scan on 3c48 for ~15min. 20:20 : Data is affected by Scintillation. 20:40 : Started command file. '/odisk/gtac/cmd/21_042/21_042_24Oct11_obs.cmd' 00:40 : W06 intermitent servo time out. 00:00 : scintillation vanished. 01:00 : scintillation started again. 04:15 : scintillation vanished. 05:03 : scan started on 3c147 for 15min. 05:20 : observation session over.