GTAC Observation Log 1. Date : 17/8/2013 2. Observation Sr. No. : 6656 3. Observer : Neeraj Gupta,Raghunathan Srianand,Patrick Petitjean,Pasquier Noterdaeme,hadi Rahmani 4. Observer's Email : ngupta@iucaa.ernet.in,anand@iucaa.ernet.in,ppetitje@iap.fr,noterdae@iap.fr,hadi@iucaa.ernet.in 5. Project Name : HI 21-cm absorption follow-up of DLAs from SDSS BOSS 6. Project Code : 24_025 7. Operator(s) : Deepak,Sachin,Surender 8. Command File : /odisk/gtac/cmd/neeraj/bdla0835p34.cmd,/odisk/gtac/cmd/neeraj/bdla0835.cmd 9. LTA File : /gsbifrdata/17aug/24_025_17aug2013.lta,/gsbifrdata/17aug/24_025_17aug2013.lta.1,/gsbifrdata/17aug/24_025_17aug2013.lta.2, 10. LogFlag File : /odisk/online1/logflags/24_025.FLAGS.13,/odisk/online1/logflags/24_025.FLAGS.12, ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 318.3024 MHz ,RF2 : 318.3024 MHz, SA1 : 0 dB, SA2 : dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 254 MHz, ILO2 : 254 MHz , IVLO1 : 64.3024 MHz, IVLO2 : 64.3024 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 6 MHz,ON, IF-CH2 : 4+12 dB, 6 MHz,ON GSB SETTINGS : 14. GSB Mode : Realtime 15. GSB LTA : 8 16. GSB CTRL : ONLINE 17. GSB Fstop : ON 18. GAIN EQ : ON 19. Stokes : TotIntensity 20. Beam - 1 : OFF 21. Beam - 2 : OFF 22. ACQ BW : 16.67 MHz 23. Final BW : 2.08 MHz; Step # 2 24. Maximum Channels : 512 25. Channel Numbers : 0:511:1 26. LO5 -1 : 135.00 27. LO5 -2 : 170.00 28. Frequency Parameters (TPA) : 318.3024 318.3024 254 254 64.3024 64.3024. 29. Integration Time : 16.106112 Sec. 30. No of Antennas Working(Fringing) :29 31. Name of Non-Working Antennas (with reason for each) : E05 : BLDC. 32. Note for Backup : 33. Start and End Time of Obs.(IST): 05:00 - 15:00 34. ONLINE Machine : Shivneri 35. Comments (During Observations) : 05:00 : Started set up. 05:28 : Started scan on 3C48. 05:40 : Stopped scan and Halt GSB ---------------------------------------------- 05:40 : Started new set up. LO1=283MHz. LO4=60.6521 LO5=139.3479,165.6521 tpa 343.6521 343.6521 283 283 60.6521 60.6521 step#= 4, BW= +2.0833 05:51 : Started scan on 3C48 for 15min. 05:11 : Started command file. 09:45 : C14 taken for maintenance. 11:50 : Started scan on 3C286 for 10mins. 12:00 : Scan stopped. 12:01 : C14 released for observation. ----------------------------------------------- 12:02 : Settings changed Line/Center Frequency= 335.1989 CH#[0]= 334.1666 CH#[512]= 336.2499 BW= +2.0833 CW= 4.07 (KHz.) tpa 330 330 265 265 65 65 12:10 : Started scan on 3C286 for 15mins. 12:32 : Started command file. /odisk/gtac/cmd/bdla0835.cmd 15:00 : Observation stopped.