GTAC Observation Log 1. Date : 09/1/2012 2. Observation Sr. No. : 5746 3. Observer : Preshanth Jagannathan 4. Observer's Email : preshanth@ras.ucalgary.ca,russ@ras.ucalgary.ca 5. Project Name : Completing the wide-field 610 MHz polarisation survey of the ELAIS N1 field 6. Project Code : 21_086 7. Operator(s) : Manisha, Navanath, Nilesh, Rupsingh, Santaji, 8. Command File : /odisk/gtac/cmd/russ/21_086/obs_09.cmd 9. LTA File : /gsbifrdata/09jan/21_086_09jan2012.lta, /gsbifrdata/09jan/21_086_09jan2012.lta.1 10. LogFlag File : /odisk/online1/logflags/21_086.FLAGS.6 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 596 MHz ,RF2 : 596 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 545 MHz, ILO2 : 545 MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 24+4 dB, 32 MHz,ON, IF-CH2 : 24+4 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Full_Polar 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) : 596 596 545 545 51 51. 25. Integration Time : 16.106 Sec. 26. No of Antennas Working(Fringing) :30 27. Name of Non-Working Antennas (with reason for each) : 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 04:00 - 15:45 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 04:00 : setup started. 04:23 : scan started on 3c286. 04:40 : command file started. 08:45 : S03 Parked for painting. 09:00 : S04 Parked for painting. 09:38 : cmd file stopped 09:39 : Started scan on 3C286 for 15 min. 09:55 : Scan stooped. 09:58 : Restarted cmd file 12:14 : ACQ giving error obsravtion stopped. --------------------------------------------------------- LtaTime 44110.408821 Seqnum 28320 BlockSize 4325392 SLICE 0 OF 2 ......... LtaBlockSize 4325392 [prot.len 2162696] OutBuf+ 0 113294 113295 113296 113297 [node5.gmrt.ncra.tifr.res.in:02999] mca_btl_tcp_frag_send: writev failed with er rno=104 ------------------------------------------------------------- 13:30 : tried rebooting Network switches 13:45 : Restarted observing file from phase cal. 15:27 : Stopped command file and observation session over. 15:32 : Started scan on 3c48 ~8min. 15:40 : Stopped observation session.