GTAC Observation Log 1. Date : 1/3/2013 2. Observation Sr. No. : 6401 3. Observer : Sandip Sirothia 4. Observer's Email : sirothia@ncra.tifr.res.in,ishwar@ncra.tifr.res.in 5. Project Name : Candidate High-redshift Radio Galaxies: Compact ultra-steep-spectrum sources from TGSS 6. Project Code : 23_066 7. Operator(s) : Navanath, Nilesh, Surender 8. Command File : /odisk/gtac/cmd/sirothia/23_066_20130301a.cmd, /odisk/gtac/cmd/sirothia/23_066_20130301b.cmd, /odisk/gtac/cmd/sirothia/23_066_20130301c.cmd, /odisk/gtac/cmd/sirothia/23_066_20130301d.cmd, /odisk/gtac/cmd/sirothia/23_066_20130301e.cmd, /odisk/gtac/cmd/sirothia/23_066_20130301f.cmd, 9. LTA File : /gsbifrdata/01mar/23_066_01mar2013_16s.lta 10. LogFlag File : /odisk/online1/logflags/23_066.FLAGS.8 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 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Total_Intensity 18. Beam - 1 : IA 19. Beam - 2 : PA 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) :29 27. Name of Non-Working Antennas (with reason for each) : C04 : Servo motor changing and counter weight rectification. W02 : BLDC work. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 22:00 - 05:55 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 2s data file : /gsbifrdata1/01mar/23_066_01mar2013_2s.lta ------------------------------------------------------------------------ 22:00 : Started setup. 22:05 : Started phasing. 22:06 : Started scan on 3c147 for 25 min. 22:35 : started cmd file. /odisk/gtac/cmd/sirothia/23_066_20130301a.cmd 23:39 : Skipped source 0521-207 as it was set. 23:40 : Started next command file. /odisk/gtac/cmd/sirothia/23_066_20130301b.cmd. 23:41 : C01 servo problem. 23:50 : C01 started working. 23:52 : Skipped sources T1402-10 and T1402-11 due to lower EL (<19d). 00:29 : Started next command file. /odisk/gtac/cmd/sirothia/23_066_20130301c.cmd. 01:46 : Started next command file. /odisk/gtac/cmd/sirothia/23_066_20130301d.cmd. 03:02 : Started next command file. /odisk/gtac/cmd/sirothia/23_066_20130301e.cmd. 04:08 : sources J1034-3224 and 1033-343 skipped as they set. 04:12 : Started next command file. /odisk/gtac/cmd/sirothia/23_066_20130301f.cmd. 04:39 : S01 servo problem - not releasing BRAKES. 05:25 : Stopped command file. 05:31 : Started phasing scan on 3c286. 05:33 : Started scan on 3c286 for ~ 20 min. 05:55 : Stopped observation session.