GTAC Observation Log 1. Date : 28/04/2018 2. Observation Sr. No. : 10209 3. Observer : Hariharan Krishnan, Divya Oberoi, Rohit Sharma, Atul Mohan, Surajit Mondal 4. Observer's Email : hara@ncra.tifr.res.in, div@ncra.tifr.res.in, rohit@ncra.tifr.res.in, atul@ncra.tifr.res.in, surajit@ncra.tifr.res.in 5. Project Name : Configuring the uGMRT as a Solar Monitoring Instrument : uGMRT Solar Spectrograph (uGSS) 6. Project Code : 34_028 7. Operator(s) : Pramod 8. Command File : /odisk/gtac/cmd/34_028/sun_20180428.cmd 9. LTA File : /gsbifrdata1/28apr/34_028_28apr2018.lta, /gwbifrdata2/28apr/34_028_28apr2018_gwb_610.lta, /gwbifrdata2/28apr/34_028_28apr2018_gwb_325.lta, /gwbifrdata2/28apr/34_028_28apr2018_gwb_150.lta 10. LogFlag File : /odisk/online1/logflags/34_028B.FLAGS.5, /odisk/online1/logflags/34_028A.FLAGS.6, /odisk/online1/logflags/34_028.FLAGS.7 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 30 dB, SA2 : 30 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 16 MHz,ON, IF-CH2 : 4+14 dB, 16 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 : 16.666666 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 156 156 218 218 62 62 30. Integration Time : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : W01 : MCM 5 time out. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 28 Apr 2018 10:00:00 - 28 Apr 2018 12:20:00 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 : 2 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 8192 GPU_CHAN_NUM : 0:8191:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF2 : 750 750 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 34_028A GPU_RF3 : 250 250 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : -1 -1 GCODE3 : 34_028B GPU_RF4 : 250 250 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 34_028 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : IA GPU_BEAM_2 : IA GPU_BEAM_3 : IA GPU_BEAM_4 : OFF GPU_BM_INT : 64 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 64 inputs. GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- Split the antennas as follow. # sub 2 # C02 C04 C08 C11 : 610MHz ante 4 5 3 24 9 cp 0;defs 2;subar 2 # sub 3 # C01 C10 C12 C13 : 325MHz ante 4 6 12 2 11 cp 0;defs 3;subar 3 150MHz # sub 4 # C00 C03 C05 C06 C09 C14 W01 W02 W03 W04 W05 W06 E02 E03 E04 E05 E06 S01 S02 S03 S04 S06 ante 22 7 1 19 20 4 10 8 13 14 15 16 25 17 18 21 22 23 26 27 28 29 30 cp 0;defs 4;subar 4 # GWB GAC configuration is as follows : 610MHz # BEAM-1:130 :: C02 C04 C08 C11 Total=4 # BEAM-1:175 :: C02 C04 C08 C11 Total=4 325MHz # BEAM-2:130 :: C01 C10 C12 C13 Total=4 # BEAM-2:175 :: C01 C10 C12 C13 Total=4 150MHz # BEAM-3:130 :: C00 C03 C09 C14 E02 E03 E06 S01 S03 S04 S06 Total=11 # BEAM-3:175 :: C00 C03 C09 C14 E02 E03 E06 S01 S03 S04 S06 Total=11 09:00 : Started set up. 10:00 : Power equalized on Sun at 150 counts with SA 30db. 10:05 : stared command file. /odisk/gtac/cmd/34_028/sun_20180428.cmd 11:50 : Stopped command file and remove 30db SA. 12:01 : Started scan on 3C147. 12:10 : Stopped scan and observation session is over.