GTAC Observation Log 1. Date : 26/11/2012 2. Observation Sr. No. : 6243 3. Observer : Mamta Pomier, Sandeep Sirothia 4. Observer's Email : mamtapan@gmail.com,sirothia@ncra.tifr.res.in 5. Project Name : LOW FREQUENCY OBSERVATIONS OF CLASH CLUSTERS 6. Project Code : 23_035 7. Operator(s) : Deepak, Manisha, Pramod, Sachin, 8. Command File : /odisk/gtac/cmd/23_035/26nov2012_2.cmd, /odisk/gtac/cmd/23_035/27nov2012.cmd 9. LTA File : /gsbifrdata/26nov/23_035_26nov2012_16s.lta, /gsbifrdata/27nov/23_035_27nov2012_16s.lta 10. LogFlag File : /odisk/online1/logflags/23_035.FLAGS.3 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 : 512 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 : 2.013 Sec. 26. No of Antennas Working(Fringing) :27 27. Name of Non-Working Antennas (with reason for each) : W05 : Mech Work / Painting. C10 : 175 pole no fringe(No 235MHz feed.) E02 : 175 Pol no fringe.(No fringe @ 235MHz) 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 22:45 - 09:02 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 2s Data file /gsbifrdata1/26nov/23_035_26nov2012_2s.lta.1, /gsbifrdata1/27nov/23_035_27nov2012_2s.lta --------------------------------------------------------------------- 22:45 : Started scan on 3C147 for 15 min. 23:10 : Stopped scan on 3C147 & started command file. '/odisk/gtac/cmd/23_035/26nov2012_2.cmd' 03:45 : Stopped commmand file and started scan on phase cal. 03:53 : Stopped scan on phase cal. 03:57 : Started scan on 3C147 for next 15 mins. This scan was common for end of the current session and start of the next session. 04:13 : Stopped scan on 3C147, end of the first session. --------------------------------------------------------------------- 04:20 : Started command file /odisk/gtac/cmd/23_035/27nov2012.cmd 08:16 : E02 released for painting work. scan # 10 : bad. 08:35 : command file stopped. 08:44 : started scan on 3C286 ~ 15mins. 09:02 : stopped scan & observation session.