GTAC Observation Log 1. Date : 11/04/2010 2. Observation Sr. No. : 4810 3. Observer : Sandeep Sirothia, Nimisha Kantharia 4. Observer's Email : sirothia@ncra.tifr.res.in,ngk@ncra.tifr.res.in 5. Project Name : Extra Galactic survey 6. Project Code : 18_031 7. Operator(s) : Deepak, Rupsingh, Santaji, Shilpa 8. Command File : /odisk/gtac/cmd/sirothia/18_031_20100411a.gsb, /odisk/gtac/cmd/sirothia/18_031_20100411b.gsb 9. LTA File : /rawdata/11apr/18_031_11apr2010.lta, /rawdata1/11apr/18_031_11apr2010.ltb 10. GSB File : /gsbifrdata/11apr/18_031_11apr2010_gsb.lta, 11. LogFlag File : /odisk/online1/logflags/18_031.FLAGS.4 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) :24 20. Name of Non-Working Antennas (with reason for each) : S03,S04,S06 - OFC cut. C01 - OFF mode. C08 - fringe fluctuations in hardware correlator. E03 - servo problem. E04 - 130 no fringe. 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 17:30 - 07:50 23. ONLINE Machine : Shivneri 24. Correlator Mode : UsbPolar 25. Comments (During Observations) : # 2sec integration files /rawdata/11apr/18_031_11apr2010_2s.lta /rawdata1/11apr/18_031_11apr2010_2s.ltb /gsbifrdata/11apr/18_031_11apr2010_gsb_2s.lta ----------------------------------------------- 17:35 : Started scan on 3C147. 18:05 : Started scan on J0218+4232. 18:31 : Started command file /odisk/gtac/cmd/sirothia/18_031_20100411a.gsb 00:58 : Stopped command file. 01:04 : Started scan on 3C286. 01:19 : Stopped scan. 01:26 : '/odisk/gtac/cmd/sirothia/18_031_20100411b.gsb' command file started. 07:24 : Stopped command file. 07:35 : Started scan on 3C48. 07:50 : Stopped scan and observation closed.