GTAC Observation Log 1. Date : 06/08/2010 2. Observation Sr. No. : 4998 3. Observer : Ujjwal Kumar 4. Observer's Email : ujjwal@ncra.tifr.res.in 5. Project Name : Pulsar Observation 6. Project Code : 18_068 7. Operator(s) : Amruta, Navanath, Shilpa 8. Command File : /odisk/gtac/cmd/hold.cmd 9. LTA File : /rawdata/6aug/18_068_325mhz_suba2.lta, /rawdata1/6aug/18_068_325mhz_suba2.ltb, /rawdata/6aug/18_068_610mhz_suba4.lta, /rawdata1/6aug/18_068_610mhz_suba4.ltb 10. GSB File : /gsbifrdata/6aug/18_068_sub2_gsb.lta, /gsbifrdata/6aug/18_068_sub4_gsb.lta 11. LogFlag File : /odisk/online1/logflags/SUBA4.FLAGS.57, /odisk/online1/logflags/SUBA2.FLAGS.48, ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 610 MHz ,RF2 : 610 MHz, SA1 : 0 dB, SA2 : 0 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 540 MHz, ILO2 : 540 MHz, IVLO1 : 70 MHz, IVLO2 : 70 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 20+4 dB, 32 MHz,OFF, IF-CH2 : 20+4 dB, 32 MHz,OFF 15. BB BW(KHz) & BB ALC : 16000 KHz, OFF 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) : E02 : Feed jam. E03 : No fringe GHB+GSB. E05 : No Fringe. 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 08:00 - 12:32 23. ONLINE Machine : Shivneri 24. Correlator Mode : IndianPolar 25. Comments (During Observations) : 08:00 : Started settings. Correlator configured in pulsar mode. ----------------------------------------------------------------------------------------- # sub 2 # C01 C02 C03 C05 C10 C12 C13 W01 E02 S01 ante 10 6 5 1 19 12 2 11 8 17 26 cp 0;defs 2;subar 2 tpa 325 325 255 255 70 70 prjfreq lnkndas ----------------------------------------------------------------------------------------- # sub 4 # C00 C04 C06 C08 C09 C11 C14 W02 W03 W04 W05 W06 E03 E04 E05 E06 S02 S03 S04 S06 ante 20 7 3 20 24 4 9 10 13 14 15 16 25 18 21 22 23 27 28 29 30 cp 0;defs 4;subar 4 tpa 610 610 540 540 70 70 prjfreq lnkndas ----------------------------------------------------------------------------------------- 08:00 : Started settings for 18_068 project. 08:30 : Started IF power equalisation on 3C48 @ 600 counts. 08:45 : Started BB Power equalisation on 3C48 @ 1000 counts. 09:15 : Power eq. done. 09:25 : Started scan on 0837-198 for phasing. 09:47 : Started one more phasing iteration on 0837-198. 10:00 : Phasing done on 0837-198. 10:04 : Started scan on J0437-4715. 10:24 : Started scan on J0621+1002. 10:53 : Started scan on B0950+08. 11:10 : Stopped scan. NOTE :-Stopped observing session and parked antennas, because of high wind. 11:37 : Restarted observation. 11:39 : Started scan on J1022+1001. 12:11 : Started scan on J1012+5307. 12:25 : C08 taken for maintenance. 12:32 : Stopped scan and observing session over.