GTAC Observation Log 1. Date : 21/03/2017 2. Observation Sr. No. : 9276 3. Observer : Poonam Chandra, Wade, Sushma Kurapati, Veronique Petit, Maurice Andrew Leutenegger, David Cohen, Jason H Grunhut 4. Observer's Email : poonam@ncra.tifr.res.in, marmottecam@yahoo.ca, sushma@ncra.tifr.res.in, Vpetit@udel.edu, maurice.a.leutenegger@nasa.gov, dcohen1@swarthmore.edu, jason.grunhut@gmail.com 5. Project Name : Uncovering the intriguing nature of the magnetic O\\+O binary system Plaskett`s star 6. Project Code : 31_105 7. Operator(s) : Deepak, Shilpa 8. Command File : /odisk/gtac/cmd/poonam/31_105/obs.cmd 9. LTA File : /gsbifrdata1/21mar/31_105_21mar2017.lta 10. LogFlag File : /odisk/online1/logflags/31_105.FLAGS.6 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1409 MHz ,RF2 : 1409 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1460 MHz, ILO2 : 1460MHz , 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_lenyadri 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 : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 1409 1409 1460 1460 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : W01 : Servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 21 Mar 2017 16:50:00 - 21 Mar 2017 23:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : ------------GWB Setting---------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 1.0 GPU_EDGE_FRQ : 0.000000 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_RF : 1460 1460 GPU_DDC : OFF GPU_DDCLO : 0.0000 0.0000 GPU_SIDEBAND : 1 1 GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 31_105 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BM_INT : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 32 inputs. GPU_FILRFI : RFI Filterring OFF --------------------------------------------------------------------------- 16:50 : Started settings. 17:09 : Started scan on 3C48 for ~ 12 min. 17:29 : '/odisk/gtac/cmd/poonam/31_105/obs.cmd' command file started. 22:41 : Stopped command file. 22:47 : Started scan on 3C286. 23:00 : Stopped scan and observing session over.