GTAC Observation Log 1. Date : 27/06/2015 2. Observation Sr. No. : 7872 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 8. Command File : /odisk/gtac/cmd/28_083/obs_27jun.cmd 9. LTA File : /gsbifrdata/27jun/28_083_27jun2015.lta 10. LogFlag File : /odisk/online1/logflags/28_083.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 : 255MHz , 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) : 306 306 255 255 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C13 : : Servo - BLDC installation. W05 : : Antenna reflector surface refurbishment. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 27 Jun 2015 11:00:00 - 27 Jun 2015 14:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 11:09 : Started scan on 3c147 for ~ 15 min. 11:30 : Started command file. 13:41 : Stopped command file. 13:46 : Started scan on 3c147. 13:50 : E06 servo problem (Not releasing Brakes). 13:59 : E06 Started working. 14:02 : Stopped scan and observation closed.