GTAC Observation Log 1. Date : 18/02/2011 2. Observation Sr. No. : 5252 3. Observer : Sandeep Sirothia, Ishwara Chandra 4. Observer's Email : sirothia@ncra.tifr.res.in,ishwar@ncra.tifr.res.in 5. Project Name : The GMRT extra-galactic sky survey at 150 MHz 6. Project Code : 19_043 7. Operator(s) : Deepak, Manisha, Rupsingh, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/sirothia/19_043_20110218a.cmd, /odisk/gtac/cmd/sirothia/19_043_20110218b.cmd 9. LTA File : /rawdata/18feb/19_043_18feb2011.lta, /rawdata1/18feb/19_043_18feb2011.ltb 10. GSB File : /gsbifrdata/18feb/19_043_18feb2011_gsb.lta 11. LogFlag File : /odisk/online1/logflags/19_043.FLAGS.67 ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 218 MHz, ILO2 : 218 MHz, IVLO1 : 62 MHz, IVLO2 : 62 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON 15. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : GHB Settings : 16. GHB Channels : 0:127:1 17. Correlator Mode : UsbPolar 18. Frequency Parameters (TPA) : 156 156 218 218 62 62 GSB Settings : 19. Maximum Channels : 256 20. Final Bandwidth (MHz): OFF MHz; Step # 0 21. IFBW (MHz) : LO5 (KHz) : 16:138000-167000 22. Stokes : Full_Polar 23. Beam - 1 : IA 24. Beam - 2 : PA 25. Integration Time : 128 LTA ~ 16.908 Sec. 26. No of Antennas Working(Fringing) :26 27. Name of Non-Working Antennas (with reason for each) : C04 : BLDC Work. C11 : Painting. C12 : Feed jam. S02 : Painting. C11,C12,C13,C14,W01 no fringe in usb-175(GHB) 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 15:30 - 07:05 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : ------------------------------------------------------------------------------ ## 2.097152 sec /rawdata/18feb/19_043_18feb2011_2s.lta, ## 2.097152 sec /rawdata1/18feb/19_043_18feb2011_2s.ltb, ## 2.013264 sec /gsbifrdata1/18feb/19_043_18feb2011_gsb_2s.lta ------------------------------------------------------------------------------ 15:41 : Started scan on 3C48. 15:55 : C12 started working. 15:59 : Stopped scan. 16:00 : Started scan J0218+4232. 16:00 : Stopped scan. 16:20 : Started command file '/odisk/gtac/cmd/sirothia/19_043_20110218a.cmd' 17:36 : S02 released for observation. 19:05 : C11 released for observation. 23:36 : Stopped command file. 23:42 : '/odisk/gtac/cmd/sirothia/19_043_20110218b.cmd' command file started. 05:39 : For 6th loop R32D31, R32D29, R32D30 removed from the command file (because of the set). 06:40 : Stopped command file. 06:44 : Started scan on 3C286. 07:05 : Stopped scan and observing session over. ----------------- Note : Delay jumps : With Respect To W03 antenna USB : E05,S01,S04 LSB : S04,W04 GSB : E04,E05-175,S01-175,S04,S06