GTAC Observation Log 1. Date : 1/11/2013 2. Observation Sr. No. : 6762 3. Observer : Ewan O'Sullivan,Nimisha Kantharia,Konstantinos Kolokythas,Somak Raychaudhury,Sandeep K. Sirothia,C.H. IshwaraChandra,Gopal krishna 4. Observer's Email : eosullivan@cfa.harvard.edu,ngk@ncra.tifr.res.in,kkolok@star.sr.bham.ac.uk,somak@star.sr.bham.ac.uk,sirothia@ncra.tifr.res.in,ishwar@ncra.tifr.res.in,krishna@ncra.tifr.res.in 5. Project Name : The origin of the HI trail and ultra-steep radio structure in the NGC 5903/NGC 5898 group 6. Project Code : 25_006 7. Operator(s) : Deepak,Manisha,Pramod,Surender 8. Command File : /odisk/gtac/cmd/ngk/25_006/ngc5903-1nov13.cmd 9. LTA File : /gsbifrdata/01nov//25_006_01nov2013.lta, 10. LogFlag File : /odisk/online1/logflags/25_006.FLAGS, ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1402 MHz ,RF2 : 1402 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1340 MHz, ILO2 : 1340 MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Mode : Realtime 15. GSB LTA : 8 16. GSB CTRL : ONLINE 17. GSB Fstop : ON 18. GAIN EQ : ON 19. Stokes : TotIntensity 20. Beam - 1 : OFF 21. Beam - 2 : OFF 22. ACQ BW : 16.67 MHz 23. Final BW : 16.666666 MHz; Step # 0 24. Maximum Channels : 512 25. Channel Numbers : 0:511:1 26. LO5 -1 : 138.00 27. LO5 -2 : 167.00 28. Frequency Parameters (TPA) : 1402 1402 1340 1340 62 62. 29. Integration Time : 16.106112 Sec. 30. No of Antennas Working(Fringing) at the begining :27 31. Name of Non-Working Antennas (with reason for each) : W04 : Painting C13 : low fringe. C04 : 130 pol low fringe. 32. Note for Backup : 33. Start and End Time of Obs.(IST): 08:25 - 17:02 34. ONLINE Machine : Lenyadri 35. No of Antennas Working(Fringing) at the end :27 36. Comments (During Observations) : 08:25 : Started set-up. 08:37 : started scan on 3C286 ~25mins. 09:05 : command file started. 11:24 : C13 started working. 12:10 : Started scan on 3C286 for ~ 11.2743 min and restarted command file. 15:00 : W02 ABC time out duo to high temp. 15:30 : Started scan on 3C286 for ~ 10.2005 min and restated command file. 16:44 : Stopped command file. 16:51 : Started scan on 3C468.1 17:02 : Stopped scan and observation session is over.