GTAC Observation Log 1. Date : 02/08/2015 2. Observation Sr. No. : 7961 3. Observer : Jennifer Riding, Huib Intema, Benjamin William McKinley, Jack Line, Pietro Procopio, Rachel Webster 4. Observer's Email : jthomps@student.unimelb.edu.au, hintema@nrao.edu, ben.mckinley@unimelb.edu.au, jline@student.unimelb.edu.au, pietro.procopio@unimelb.edu.au, r.webster@unimelb.edu.au 5. Project Name : Bright Extended Sources in the MWA Sky 6. Project Code : 28_083 7. Operator(s) : Nilesh, Pramod 8. Command File : /odisk/gtac/cmd/28_083/obs.cmd 9. LTA File : /gsbifrdata1/02aug/28_083_02aug2015.lta 10. LogFlag File : /odisk/online1/logflags/28_083.FLAGS.5 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 167 MHz ,RF2 : 167 MHz, SA1 : 14 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218MHz , 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) : 167 167 218 218 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : E02 : Taken for BLDC E06 : Servo problem 33. Note for Backup : 34. Start and End Time of Obs.(IST): 02 Aug 2015 08:00:00 - 02 Aug 2015 13:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 08:00 to 09:10 : Could not start observations due to GSB power switch failure for nodes 33 to 39. 09:10 : GSB released for observation. 09:34 : Started scan on 3C48 for 15 min. 09:51 : Stopped scan and started command file. '/odisk/gtac/cmd/28_083/obs.cmd' 09:55 : C02 taken for maintenance. 11:40 : Target source set. 11:45 : Started scan on 3C147. 13:00 : Stopped scan and observation session is over.