GTAC Observation Log 1. Date : 20/07/2015 2. Observation Sr. No. : 7932 3. Observer : Mousumi Das, Dwarakanath K.S., Shweta Srivastava 4. Observer's Email : chandaniket@gmail.com, dwaraka@rri.res.in, srivashweta@gmail.com 5. Project Name : Investigating the Core-jet structure in Ultraluminous Infrared Galaxies 6. Project Code : 28_059 7. Operator(s) : Deepak 8. Command File : /odisk/gtac/cmd/28_059/obs20jul.cmd 9. LTA File : /gsbifrdata/20jul/28_059_20jul2015.lta 10. LogFlag File : /odisk/online1/logflags/28_059.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1281 MHz ,RF2 : 1281 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1230 MHz, ILO2 : 1230MHz , 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) : 1281 1281 1230 1230 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C13 : BLDC W05 : Maintenance C02 : MCM 5 timeout 33. Note for Backup : 34. Start and End Time of Obs.(IST): 20 Jul 2015 16:00:00 - 20 Jul 2015 22:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 16:01 : Started scan on 3C286 for 15mins. 16:20 : S-arm power failed. 16:25 : S-arm power failure. 16:30 : Started command file. 18:00 : W05 released for observation. 18:30 : C02 started working. 18:32 : C01 started showing low fringe. 21:43 : Stopped command file. 21:47 : Started scan on 3C286. 22:00 : Stopped scan and observation session is over.