GTAC Observation Log 1. Date : 01/06/2012 2. Observation Sr. No. : 5965 3. Observer : Nissim Kanekar 4. Observer's Email : nkanekar@ncra.tifr.res.in 5. Project Name : Probing the extended molecular emission component in SgrB2 at sim 1~GHz 6. Project Code : 22_017 7. Operator(s) : Deepak, Nilesh, Rupsingh, Santaji, 8. Command File : /odisk/gtac/cmd/nissim/sgrb2.cmd, 9. LTA File : /gsbifrdata/01jun/22_017_01jun2012.lta, 10. LogFlag File : /odisk/online1/logflags/22_017.FLAGS.1, ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1127 MHz ,RF2 : 1127 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1070 MHz, ILO2 : 1070 MHz , IVLO1 : 57 MHz, IVLO2 : 57 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 24+12 dB, 32 MHz,OFF, IF-CH2 : 24+12 dB, 32 MHz,OFF GSB SETTINGS : 14. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : OFF 17. Stokes : Total_Intensity 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. ACQ BW : 16 MHz 21. Maximum Channels : 256 22. IFBW (MHz) : LO5 (KHz) : Custom :- 16 : 143 - 162 23. Final Bandwidth (MHz): 2 MHz; Step # 2 24. Frequency Parameters (TPA) : 1127 1127 1070 1070 57 57. 25. Integration Time : 16.106 Sec. 26. No of Antennas Working(Fringing) :26 27. Name of Non-Working Antennas (with reason for each) : C10 : Upgrade BLDC work. W02 : 130 pol low self. W03 : Very low fringe. W05 - 130 pol low self. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 21:50 - 06:00 30. ONLINE Machine : Shivneri 31. Comments (During Observations) : 21:50 : Started settings. power Equalized at ~ 225 counts. 22:12 : Started scan on 3c286 for ~12min. 22:30 : Started command file. '/odisk/gtac/cmd/nissim/sgrb2.cmd'. 00:50 : S04 applied brakes. 05:42 : stopped the command file and scan started on 3c48. 06:00 : observation session over.