GTAC Observation Log 1. Date : 20/7/2011 2. Observation Sr. No. : 5457 3. Observer : Sandeep Sirothia 4. Observer's Email : sirothia@ncra.tifr.res.in 5. Project Name : Ultra-deep GMRT imaging of diffuse non-thermal radio emission in merging galaxy cluster ZwCl 2341.1+0000 6. Project Code : 20_061 7. Operator(s) : Navanath, Nilesh, Sachin, Santaji, Shilpa 8. Command File : /odisk/gtac/cmd/sirothia/20_061_23jun.cmd 9. LTA File : /gsbifrdata/20jul/20_061_20jul2011.lta 10. LogFlag File : /odisk/online1/logflags/20_061.FLAGS.15 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255 MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 10+12 dB, 32 MHz,ON, IF-CH2 : 10+12 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Full_Polar 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. ACQ BW : 32 MHz 21. Maximum Channels : 256 22. IFBW (MHz) : LO5 (KHz) : 32:149000-156000 23. Final Bandwidth (MHz): OFF MHz; Step # 0 24. Frequency Parameters (TPA) : 306 306 255 255 51 51. 25. Integration Time : 16.106 Sec. 26. No of Antennas Working(Fringing) :28 27. Name of Non-Working Antennas (with reason for each) : C11 : 130p No fringe C09 : No fringe. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 22:00 - 11:00 30. ONLINE Machine : Shivneri 31. Comments (During Observations) : 2s data file :- /gsbifrdata1/20jul/20_061_20jul2011_2s.lta ---------------------------------------------------- 22:17 : Started scan on 3C286. 22:47 : Stopped scan. 22:54 : Started scan on J2018+2839. 23:30 : Command file started. 03:50 : Scan started on J0218+4232 04:05 : Scan started on 3C48. 04:25 : Restarted the command file. 07:14 : Due to high wind S03 frequently applying brakes. 09:15 : Strong RFI lines. 09:21 : Stopped command file. Parked the antennas due to high wind. 11:00 : Observing session over.