GTAC Observation Log 1. Date : 30/04/2016 2. Observation Sr. No. : 8541 3. Observer : Viral Parekh, Dwarakanath K.S., Huib T Intema, Ruta Kale 4. Observer's Email : viral@rri.res.in, dwaraka@rri.res.in, hintema@nrao.edu, ruta@ncra.tifr.res.in 5. Project Name : Exploring diffuse radio sources within MCXC cluster catalogue 6. Project Code : 30_056 7. Operator(s) : Deepak, Rupsing, Shilpa 8. Command File : /odisk/gtac/cmd/30_056/30apr16/obs_30apr.cmd 9. LTA File : /gsbifrdata/30apr/30_056_30apr2016.lta.1, /gsbifrdata/30apr/30_056_30apr2016.lta 10. LogFlag File : /odisk/online1/logflags/30_056.FLAGS.2, /odisk/online1/logflags/30_056.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 629 MHz ,RF2 : 253 MHz, SA1 : 0 dB, SA2 : 14 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+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 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 : 0 MHz; Step # 0 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) : C01 : BLDC work. C05 : Structural repair. S01 : CST painting. C10,E02,S03,W01 : No feed @ 235MHz. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 30 Apr 2016 12:00:00 - 30 Apr 2016 18:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :25 37. Comments (During Observations) : 11:55 : Started settings. 12:11 : Started scan on 3C48 for 15min. 12:34 : '/odisk/gtac/cmd/30_056/30apr16/obs_30apr.cmd' command file started. 14:42 : Power supply got tripped in receiver room, so because of this all antennas got ABC timeout. --------------------------------------------------------------------------- 15:22 : Restarted observation. --------------------------------------------------------------------------- 15:24 : Started scan on 3C48. 15:35 : Stopped scan. 15:38 : Started command file. 17:42 : Stopped command file. 17:46 : Started scan on 3C147. 18:01 : Stopped scan and observation session over.