GTAC Observation Log 1. Date : 02/05/2010 2. Observation Sr. No. : 4847 3. Observer : Sandeep Sirothia 4. Observer's Email : sirothia@ncra.tifr.res.in 5. Project Name : Extra Galactic survey 6. Project Code : 18_031 7. Operator(s) : Deepak, Rupsingh, Santaji, 8. Command File : /odisk/gtac/cmd/sirothia/18_031_20100502a.cmd, /odisk/gtac/cmd/sirothia/18_031_20100502b.cmd 9. LTA File : /rawdata/2may/18_031_02may2010.lta, /rawdata1/2may/18_031_02may2010.ltb 10. GSB File : /gsbifrdata/2may/18_031_02may2010_gsb.lta 11. LogFlag File : /odisk/online1/logflags/18_031.FLAGS.15 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 : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 156 156 218 218 62 62 18. Integration Time : 128 LTA ~ 16.908 Sec. 19. No of Antennas Working(Fringing) :26 20. Name of Non-Working Antennas (with reason for each) : C01:off W02: Feed Jam W05: NO ELE power W06: NO ELE power 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 17:30 - 21:30 23. ONLINE Machine : Shivneri 24. Correlator Mode : UsbPolar 25. Comments (During Observations) : 2s data files. /gsbifrdata/2may/18_031_02may2010_gsb_2s.lta, /rawdata/2may/18_031_02may2010_2s.lta, /rawdata1/2may/18_031_02may2010_2s.ltb ------------------------------------------------ 17:30 : setup stared. 17:42 : scan started on 3c147. 18:13 : command file started. 19:15 : Scan#17 is bad. 19:33 : electrical power failure. 19:45 : Antennas parked due to high wind. stopped observation. 20:23 : Power resume but COMH is not working. 21:30 : COMH-2 is not working.