GTAC Observation Log 1. Date : 08/11/2010 2. Observation Sr. No. : 5091 3. Observer : Sandeep Sirothia 4. Observer's Email : sirothia@ncra.tifr.res.in 5. Project Name : Extra Galactic Survey @ 150 MHz Using GMRT 6. Project Code : 19_043 7. Operator(s) : Navanath, Sachin, Santaji, 8. Command File : /odisk/gtac/cmd/sirothia/19_043_20101108a.cmd, /odisk/gtac/cmd/sirothia/19_043_20101108b.cmd 9. LTA/LTB File : /rawdata/8nov/19_043_08nov2010.lta 10. GSB File : /gsbifrdata/8nov/19_043_08nov2010_gsb.lta 11. LogFlag File : /odisk/online1/logflags/19_043.FLAGS.23 ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 218 MHz, ILO2 : 218 MHz, IVLO1 : 62 MHz, IVLO2 : 62 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 10+12 dB, 16 MHz,ON, IF-CH2 : 10+12 dB, 16 MHz,ON 15. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : GHB Settings : 16. GHB Channels : 0:127:1 17. Correlator Mode : IndianPolar 18. Frequency Parameters (TPA) : 156 156 218 218 62 62 GSB Settings : 19. Maximum Channels : 256 20. Final Bandwidth (MHz): OFF MHz; Steps : 0 21. IFBW : LO5(MHz) : 16:138-167 MHz 22. Stokes : Full_Polar 23. Beam - 1 : OFF 24. Beam - 2 : OFF 25. Integration Time : 128 LTA ~ 16.908 Sec. 26. No of Antennas Working(Fringing) :30 27. Name of Non-Working Antennas (with reason for each) : -- 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 17:40 - 08:00 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : ------------------------------------------------------------------------------------------- GHB - INDAIN-POLAR ( USB Only ) E04,E05,E06 fringe and phase is not stable in GHB. GSB - Full Stokes. -------------------------------------------------- 2s lta files /rawdata/8nov/19_043_08nov2010_2s.lta /gsbifrdata1/8nov/19_043_08nov2010_gsb_2s.lta ------------------------------------------------------------------------------------------- 17:40 : scan started on 3c48 18:24 : scan started J0218+4232 18:44 : command file started. /odisk/gtac/cmd/sirothia/19_043_20101108a.cmd, 00:45 : 5-loop over. cmd file stopped. 00:55 : started cmd file. /odisk/gtac/cmd/sirothia/19_043_20101108b.cmd 06:54 : cmd file stopped. 07:03 : Started scan on J0953+0755 for 20 min. 07:23 : Stopped scan on J0953+0755. 07:30 : Started scan on 3C147. 08:00 : Stopped scan and observation session. E04,E05,E06 fringe and phase is not stable also shows change in bandpass for GHB. -------------------------------------------------------------------------------------------