GTAC Observation Log 1. Date : 19/12/2012 2. Observation Sr. No. : 6282 3. Observer : Viral Parekh 4. Observer's Email : viral.iucaa@gmail.com 5. Project Name : GMRT low frequency follow-up for the A1437 nearby supercluster to probe non-thermal emission 6. Project Code : 23_069 7. Operator(s) : Manisha, Nilesh, Shilpa, 8. Command File : /odisk/gtac/cmd/23_069/obs.cmd 9. LTA File : /gsbifrdata/19dec/23_069_19dec2012.lta.1 10. LogFlag File : /odisk/online1/logflags/23_069.FLAGS.2 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 : 304 MHz , 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 Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Total_Intensity 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) : 629 253 680 304 51 51. 25. Integration Time : 16.106 Sec. 26. No of Antennas Working(Fringing) :25 27. Name of Non-Working Antennas (with reason for each) : C09 : ABC time out. C10 : Only 610MHz Feed. W04 : No Fringe @ 610MHz(LO - 680). W05 : Mechanical maintenance. S01 : BLDC. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 00:50 - 11:24 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 00:50 : Started settings for observation. 01:25 : Started scan on 3C147 for ~ 15min. 01:48 : Started scan on 1123+055 for ~5min. 01:54 : Started command file. 08:28 : E02 taken for painting. 09:06 : C08 taken for painting. 09:22 : C12 taken for painting. 09:32 : C06 taken for painting. 11:05 : Stopped command file. 11:09 : Started scan on 3C286. 11:24 : Stopped scan and observing session over.