GTAC Observation Log 1. Date : 24/12/2010 2. Observation Sr. No. : 5156 3. Observer : Somak Raychaudhury 4. Observer's Email : somak@star.sr.bham.ac.uk 5. Project Name : ABELL2390 6. Project Code : 19_010 7. Operator(s) : Rupsingh, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/somak/19_010_24dec10.cmd 9. LTA File : /rawdata/24dec/19_010_24dec2010.lta, /rawdata1/24dec/19_010_24dec2010.ltb, /rawdata/24dec/19_010_24dec2010_4s.lta, /rawdata1/24dec/19_010_24dec2010_4s.ltb 10. GSB File : /gsbifrdata/24dec/19_010_24dec2010_gsb.lta, /gsbifrdata/24dec/19_010_24dec2010_4s_gsb.lta 11. LogFlag File : /odisk/online1/logflags/19_010.FLAGS.1 ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 614 MHz ,RF2 : 244 MHz, SA1 : 0 dB, SA2 : 14 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 680 MHz, ILO2 : 310 MHz, IVLO1 : 66 MHz, IVLO2 : 66 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 6 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) : 614 244 680 310 66 66 GSB Settings : 19. Maximum Channels : 512 20. Final Bandwidth (MHz): OFF MHz; Step # 0 21. IFBW : LO5(KHz) : 32:149000-156000 MHz 22. Stokes : Total_Intensity 23. Beam - 1 : OFF 24. Beam - 2 : OFF 25. Integration Time : 128 LTA ~ 16.908 Sec. 26. No of Antennas Working(Fringing) :26 27. Name of Non-Working Antennas (with reason for each) : C00,C03 : For painting. C14 : Servo problem. E02 : 175 pole no fringe(GHB+GSB). W03 : 130 pole no fringe(GHB+GSB) 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 11:00 - 19:03 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 11:00 : Started settings. 11:20 : Started scan on 3C286. 11:36 : Stopped scan. 11:44 : '/odisk/gtac/cmd/somak/19_010_24dec10.cmd' command file started. 12:37 : C14 started working. 16:18 : Stopped command file due to elevation close to zenith. 16:19 : Scan no.#12 is bad(Elevation close to zenith) 16:26 : Restarted command file. 18:41 : Stopped command file. 18:47 : Started scan on 3C48. 19:03 : Stopped scan & observation over.