GTAC Observation Log 1. Date : 12/5/2011 2. Observation Sr. No. : 5324 3. Observer : Aritra Basu 4. Observer's Email : aritra@ncra.tifr.res.in,paladino@ira.inaf.it 5. Project Name : NGC4826 6. Project Code : 20_064 7. Operator(s) : Navanath, Nilesh, 8. Command File : /odisk/gtac/cmd/aritra/20_064_12may.cmd 9. LTA File : /gsbifrdata/12may/20_064_12may2011.lta, /gsbifrdata/12may/20_064_12may2011.lta.1 10. LogFlag File : /odisk/online1/logflags/20_064.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218 MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 16+4 dB, 16 MHz,OFF, IF-CH2 : 16+4 dB, 16 MHz,OFF GSB SETTINGS : 14. Maximum Channels : 512 15. Final Bandwidth (MHz): OFF MHz; Step # 0 16. IFBW (MHz) : LO5 (KHz) : 16:138000-167000 17. Stokes : Total_Intensity 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. Frequency Parameters (TPA) : 156 156 218 218 62 62. 21. Integration Time : 16.106 Sec. 22. No of Antennas Working(Fringing) :27 23. Name of Non-Working Antennas (with reason for each) : S04,S06 : ABC time out. W02 : No Fringe. 24. Note for Backup :-- 25. Start and End Time of Obs.(IST): 18:00 - 04:00 26. ONLINE Machine : Lenyadri 27. Comments (During Observations) : 2s data: /gsbifrdata1/12may/20_064_12may2011_2s.lta, /gsbifrdata1/12may/20_064_12may2011_2s.lta.1, -------------------------------------------------- 18:00 : Started setup. 18:16 : Started command file. '/odisk/gtac/cmd/aritra/20_064_12may.cmd'. 21:00 : Strong broadband RFI 22:15 : Shifted band by 7 MHz (Strong RFI persists). 22:38 : Original settings restored, and re-started observation. 03:16 : target source NGC4826 is set. 03:20 : Started scan on 3C286. 03:40 : Observation stopped.