GTAC Observation Log 1. Date : 25/8/2013 2. Observation Sr. No. : 6670 3. Observer : Neeraj Gupta,Raghunathan Srianand,Patrick Petitjean,Pasquier Noterdaeme,Sowgat Muzahid,hadi Rahmani 4. Observer's Email : gupta@astron.nl,anand@iucaa.ernet.in,ppetitje@iap.fr,noterdae@iap.fr,sowgat@iucaa.ernet.in,hadi@iucaa.ernet.in 5. Project Name : HI observations of quasar-galaxy pairs at z~0.1 6. Project Code : 24_033 7. Operator(s) : Deepak,Pramod,Rupsingh,Surender 8. Command File : /odisk/gtac/cmd/neeraj/qgpj1036.cmd,/odisk/gtac/cmd/neeraj/qgpj1539.cmd,/odisk/gtac/cmd/neeraj/qgpj2054.cmd 9. LTA File : /gsbifrdata/25aug/24_033_25aug2013.lta,/gsbifrdata/25aug/24_033_25aug2013.lta.1,/gsbifrdata/25aug/24_033_25aug2013.lta.2,/gsbifrdata/25aug/24_033_25aug2013.lta.3, 10. LogFlag File : /odisk/online1/logflags/24_033.FLAGS.4, ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1341.84 MHz ,RF2 : 1341.84 MHz, SA1 : 0 dB, SA2 : dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1280 MHz, ILO2 : 1280 MHz , IVLO1 : 61.84 MHz, IVLO2 : 61.84 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 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 : 4.17 MHz; Step # 2 24. Maximum Channels : 512 25. Channel Numbers : 0:511:1 26. LO5 -1 : 138.25 27. LO5 -2 : 166.75 28. Frequency Parameters (TPA) : 1341.84 1341.84 1280 1280 61.84 61.84. 29. Integration Time : 16.106112 Sec. 30. No of Antennas Working(Fringing) :26 31. Name of Non-Working Antennas (with reason for each) : E05 : No feed@L-band. C04,S03 & S06 : Servo problem. 32. Note for Backup : 33. Start and End Time of Obs.(IST): 09:45 - 01:00 34. ONLINE Machine : Shivneri 35. Comments (During Observations) : 09:45 : Started set up. 09:52 : Started scan on 3C147 for 15min. 10:08 : Started command file. /odisk/gtac/cmd/neeraj/qgpj1036.cmd 11:18 : C04,S03 and S06 Started working. 12:15 : C04 taken for maintenance. 01:00 : C04 released for observation. 01:32 : Stopped command file and halted the gsb. ----------------------------------------------------- 01:32 : Started new set up. Digital SubBand/step#= 2 is USEABLE ### GSB_CONFIG LO5= 139.52 165.48, LO1= 1265 (lower),IFBW= 18,GSB [ACQ] BW= 16.6666,Total Channel= 512 BW= +4.1666,tpa 1325.48 1325.48 1265 1265 60.48 60.48 ----------------------------------------------------------- 13:42 : Started scan on 3C286 for 10min. 13:53 : Started command file. /odisk/gtac/cmd/neeraj/qgpj1214.cmd 18:02 : Stopped command file. ---------------------------------------------------------------------- 18:03 : GSB line observation setup RF band= 1390MHz LO1= 1315MHz IFBW= 16 Center Frequency= 1384.51MHz final BW=4MHz step#= 2 LO5= 140.9065 & 164.0935 tpa 1374.0935 1374.0935 1315 1315 59.0935 59.0935 18:13 : Stared scan on 3C286. 18:28 : Stopped scan. 18:39 : Started command file '/odisk/gtac/cmd/neeraj/qgpj1539.cmd' 22:40 : Stopped command file. 22:44 : Started scan on 3C48. 22:50 : Stopped scan on 3C48 and halt the GSB. Change the setting as follow, GSB line observation setup RF band= 1170 (1110 - 1230) LO1= 1110 (lower) IFBW= 18 GSB [ACQ] BW= 16.6666 Total Channel= 512 Line/Center Frequency= 1182.1642 Digital SubBand/step#= 2 is USEABLE ### GSB_CONFIG LO5= 138.2523 166.7477 tpa 1171.7477 1171.7477 1110 1110 61.7477 61.7477 23:58 : Started next command file. '/odisk/gtac/cmd/neeraj/qgpj2054.cmd' 00:47 : Stopped command file. 00:55 : Started scan on 3C48. 01:00 : Stopped scan on 3C48 and observation session is over.