GTAC Observation Log 1. Date : 17/12/2017 2. Observation Sr. No. : 9962 3. Observer : Robert Main, Dongzi Li, FangXi Lin, Nikhil Mahajan, Ue Li Pen, Keith Vanderlinde, Marten H vanKerkwijk, I-Sheng Yang 4. Observer's Email : main@astro.utoronto.ca, dzli@cita.utoronto.ca, flin@cita.utoronto.ca, mahajan@astro.utoronto.ca, pen@cita.utoronto.ca, vanderlinde@di.utoronto.ca, mhvk@astro.utoronto.ca, iyang@perimeterinstitute.ca 5. Project Name : Understanding the Extreme Lensing Events of the Black Widow`s radio eclipse 6. Project Code : 33_012 7. Operator(s) : Rupsing, Sachin, Surender 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata/17dec/33_012_17dec2017.lta, /gwbifrdata/17dec/33_012_17dec2017.lta 10. LogFlag File : /odisk/online1/logflags/33_012.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , 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_shivneri 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) : 591 591 540 540 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : E06 : Mechanical work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 17 Dec 2017 14:00:00 - 17 Dec 2017 17:10:00 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 : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF1 : 1460 1460 GPU_DDCLO1 : 0.0000 0.0000 GPU_SB1 : 1 1 GCODE1 : SUBA1 GPU_RF2 : 1460 1460 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 33_047B GPU_RF3 : 1460 1460 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 33_047C GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 33_012 GPU_RF5 : 0 0 GPU_DDCLO5 : 0.0000 0.0000 GPU_SB5 : 1 1 GCODE5 : GPU5 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 64 inputs. GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E05 S01 S03 S04 S 06 W01 W02 W03 W04 W05 W06 Total=27 # BEAM-1:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E05 S01 S03 S04 S 06 W01 W02 W03 W04 W05 W06 Total=27 --------------------------------------------------------- --------------------------------------------------------- 14:52:40 : Started scan on B1957+20 for ~ 32.8833 min. 15:28:09 : Started scan on 1859+129 for ~ 2.14748 min. 15:30:26 : Started scan on 1859+129 for ~ 1.74483 min. 15:33:46 : Started scan on B1957+20 for ~ 26.3066 min. 16:02:27 : Started scan on 1859+129 for ~ 1.87905 min. 16:04:37 : Started scan on 1859+129 for ~ 0.671088 min. 16:06:25 : Started scan on B1957+20 for ~ 26.3066 min. 16:34:12 : Started scan on 1859+129 for ~ 2.01326 min. 16:36:23 : Started scan on 1859+129 for ~ 0.53687 min. 16:38:14 : Started scan on B1957+20 for ~ 26.1724 min. 17:00:00 : Stopped scan and observing session over.