GTAC Observation Log 1. Date : 28/05/2010 2. Observation Sr. No. : 4888 3. Observer : Sandeep Sirothia 4. Observer's Email : sirothia@ncra.tifr.res.in,ishwar@ncra.tifr.res.in 5. Project Name : Extra Galactic survey @ 150MHz. 6. Project Code : 18_031 7. Operator(s) : Amruta, Deepak, Manisha, Rupsingh, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/sirothia/18_031_20100528a.cmd, /odisk/gtac/cmd/sirothia/18_031_20100528b.cmd 9. LTA File : /rawdata/28may/18_031_28may2010.lta, /rawdata1/28may/18_031_28may2010.ltb 10. GSB File : /gsbifrdata/28may/18_031_28may10_gsb.lta 11. LogFlag File : /odisk/online1/logflags/18_031.FLAGS.31 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) :28 20. Name of Non-Working Antennas (with reason for each) : C01 - OFF C14 - OFF 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 17:00 - 08:16 23. ONLINE Machine : Shivneri 24. Correlator Mode : UsbPolar 25. Comments (During Observations) : **************************************************** Two second files /rawdata/28may/18_031_28may2010_2s.lta, /rawdata1/28may/18_031_28may2010_2s.ltb, /gsbifrdata/28may/18_031_28may10_2s_gsb.lta **************************************************** 17:15 : Started scan on 3C286 for 15 mins. 17:30 : Started command file. 18:25 : C02 servo time out. 00:36 : Command file stopped. 00:38 : Started scan on 3C286 for 15mins. 00:58 : Started command file /odisk/gtac/cmd/sirothia/18_031_20100528b.cmd 06:24 : C02 - servo started working. 07:31 : Stopped command file. 07:39 : Started scan on J0218+4232. 07:54 : Stopped scan. 07:56 : Started scan on 3C48. 08:16 : Stopped scan and observing session over.