GTAC Observation Log 1. Date : 10/3/2013 2. Observation Sr. No. : 6416 3. Observer : Sandip Sirothia, Ishwar Chandra 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) : Pramod, Rupsingh, Surender 8. Command File : /odisk/gtac/cmd/sirothia/23_066_20130310b.cmd, /odisk/gtac/cmd/sirothia/23_066_20130310c.cmd, /odisk/gtac/cmd/sirothia/23_066_20130310d.cmd, /odisk/gtac/cmd/sirothia/23_066_20130310e.cmd, /odisk/gtac/cmd/sirothia/23_066_20130310g.cmd, 9. LTA File : /gsbifrdata/10mar/23_066_10mar2013_16s.lta 10. LogFlag File : /odisk/online1/logflags/23_066.FLAGS.13 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 : 2.013 Sec. 26. No of Antennas Working(Fringing) :28 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): 21:00 - 06:25 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 2s .lta file /gsbifrdata1/10mar/23_066_10mar2013_2s.lta.1 -------------------------------------------------------------------------------- GAC configuration In PA (Total 16 )#C00 C01 C02 C03 C05 C06 C08 C09 C10 C11 C12 C13 C14 W01 E02 S01 In IA (Total 28) # Total 28 except C04 & W02. --------------------------------------------------------------------------------- 21:00 : Started set up for 325MHz. 21:00 to 23:30 : Scintillation problem. 23:26 : Started scan on 3C147. 23:37 : Stopped scan on 3C147 and started following command file. '/odisk/gtac/cmd/sirothia/23_066_20130310b.cmd' 23:58 : E05 applying frequently El brake.Hence remove from GAC. 00:57 : Stopped command file. 01:00 : Started command file '/odisk/gtac/cmd/sirothia/23_066_20130310c.cmd' 02:10 : Stopped command file 02:12 : Started command file '/odisk/gtac/cmd/sirothia/23_066_20130310d.cmd' 03:30 : Stopped command file 03:32 : Started command file '/odisk/gtac/cmd/sirothia/23_066_20130310e.cmd' 04:42 : Stopped command file. 04:44 : Started command file. '/odisk/gtac/cmd/sirothia/23_066_20130310g.cmd' 05:53 : Stopped command file. 06:04 : Started scan on 3C286. 06:25 : Stopped scan & observing session is over.