GTAC Observation Log 1. Date : 02/05/2011 2. Observation Sr. No. : 5311 3. Observer : Sandeep Sirothia,Ishwar Chandra 4. Observer's Email : sirothia@ncra.tifr.res.in,ishwar@ncra.tifr.res.in 5. Project Name : Extra Galactic Survey @ 150MHz using GMRT 6. Project Code : 19_043 7. Operator(s) : Nilesh, 8. Command File : /odisk/gtac/cmd/sirothia/19_043_20110504a.cmd, /odisk/gtac/cmd/sirothia/19_043_20110504b.cmd 9. LTA File : /gsbifrdata/04may/19_043_04may2011.lta, 10. LogFlag File : /odisk/online1/logflags/19_043.FLAGS.90 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 : 12+10 dB, 16 MHz,ON, IF-CH2 : 12+10 dB, 16 MHz,ON GSB SETTINGS : 14. Maximum Channels : 256 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 : 2.013 Sec. 22. No of Antennas Working(Fringing) :22 23. Name of Non-Working Antennas (with reason for each) : C08 : Servo problem. C09 : LO UNLOCK. C13 : Electrical maintenance. E-arm : No communication. (OpticalFiber cut ...???) 24. Note for Backup :-- 25. Start and End Time of Obs.(IST): 20:00 - 22:00 26. ONLINE Machine : Shivneri 27. Comments (During Observations) : -------------------------------------------------- 2s data file : /gsbifrdata1/04may/19_043_04may2011_2s.lta, -------------------------------------------------- 20:00 : Started setup for observation. 20:41 : Started scan on 3C286 for ~ 58.3847 min. 21:43 : Started command file. '/odisk/gtac/cmd/sirothia/19_043_20110504a.cmd'. 21:55 : Stopped command file. Observation suspended due to unavaibility of 8 antennas. (Ref. : Ishwar) --------------------------------------------------