GTAC Observation Log 1. Date : 18/11/2015 2. Observation Sr. No. : 8180 3. Observer : Alka Mishra, Nimisha Kantharia, Mousumi Das 4. Observer's Email : alka7mishra@yahoo.co.in, ngk@ncra.tifr.res.in, chandaniket@gmail.com 5. Project Name : Low Frequency Radio Continuum study of Low Surface Brightness Galaxies 6. Project Code : 28_041 7. Operator(s) : Navnath, Shilpa 8. Command File : /odisk/gtac/cmd/alka/18nov15/obs.cmd 9. LTA File : /gsbifrdata/18nov/28_041_18nov2015.lta 10. LogFlag File : /odisk/online1/logflags/28_041.FLAGS.8 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 629 MHz ,RF2 : 253 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 680 MHz, ILO2 : 304MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_lenyadri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 33.333333 MHz 24. Final BW : 33.333333 MHz; Step # 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 629 253 680 304 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :25 32. Name of Non-Working Antennas (with reason for each) : W03 : Taken for BLDC C11 : Taken for Feed cage painting. S02 : ABC time out. E06 : Applied brakes. C10,E02 : No feed in 175 Pol. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 18 Nov 2015 05:00:00 - 18 Nov 2015 09:20:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :24 37. Comments (During Observations) : 05:00 : Started setup. 05:14 : Started scan on 3C147 for 10 min. 05:30 : Started command file. /odisk/gtac/cmd/alka/18nov15/obs.cmd 06:06 : C01 shows low fringe. 08:55 : Stopped command file. 09:00 : Started scan on 3C286. 09:20 : Stopped scan and observing session over.