GTAC Observation Log 1. Date : 21/02/2009 2. Observation Sr. No. : 4209 3. Observer : Neeraj Gupta, R Srianand 4. Observer's Email : Neeraj.Gupta@atnf.csiro.au,anand@iucaa.ernet.in 5. Project Name : CFHTLS field 6. Project Code : 15NGA02 7. Operator(s) : Deepak, Manisha, Nilesh, Sachin, Santaji, 8. Command File : /odisk/gtac/cmd/neeraj/cfhtlsd4.cmd 9. LTA File : /rawdata/21feb/15nga02_21feb2009_16s.lta, /rawdata1/21feb/15nga02_21feb2009_16s.ltb, /rawdata/21feb/15nga02_21feb2009_4s.lta, /rawdata1/21feb/15nga02_21feb2009_4s.ltb, /rawdata/21feb/15nga02_21feb2009_16s_diffstop.lta, /rawdata1/21feb/15nga02_21feb2009_16s_diffstop.ltb, /rawdata/21feb/15nga02_21feb2009_4s_diffstop.lta, /rawdata1/21feb/15nga02_21feb2009_4s_diffstop.ltb, 10. LogFlag File : /btemp2/logflags/15NGA02.FLAGS.2 ANTENNA SETTINGS : 11. RF Freq(MHz) & Solar Attn(dB)- RF1 : 610 MHz ,RF2 : 610 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 540 MHz, ILO2 : 540 MHz, IVLO1 : 70 MHz, IVLO2 : 70 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 14. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 610 610 540 540 70 70 18. Integration Time : 128 LTA ~ 16.908 Sec. 19. No of Antennas Working(Fringing) :27 20. Name of Non-Working Antennas (with reason for each) : C14 : Painting. E06 : Painting. W01 : Painting. 21. Note for Backup : -- 22. Start and End Time of Obs.(IST): 08:30 - 16:37 23. ONLINE Machine : Bhaskar 24. Correlator Mode : IndianPolar 25. Comments (During Observations) : -------------------------------------------- NOTE FOR THE USER : "The online fringe stopping algorithm was found to be in error by about 2s after 1Jan2009. This differential fringe rate was applied using the program diffstop. The fringe rate was corrected for an error of +2.0s, and the timestamps were also updated by the same amount." --------------------------------------------- 08:25 : Started scan on 3c286. 08:50 : Started command file. '/odisk/gtac/cmd/neeraj/cfhtlsd4.cmd'. 09:20 : C14 parked for painting. 11:26 : Command file stopped. 11:30 : Started scan on 3c286 ~10min. 11:40 : Restarted command file. 13:33 : W06 ABC time-out. 14:00 : W06 started working. 14:16 : Stopped command file. 14:23 : Started scan on 3c286 ~10min. 14:39 : Restarted command file. 15:00 : C11 175-polarisation down. 16:22 : Stopped command file. 16:27 : Started scan on 3C48 for 10 mins. 16:37 : Stopped scan and observation session.