GTAC Observation Log 1. Date : 04/06/2010 2. Observation Sr. No. : 4897 3. Observer : ekta 4. Observer's Email : ekta@ncra.tifr.res.in 5. Project Name : S1428+457 6. Project Code : 18_055 7. Operator(s) : Navanath, 8. Command File : /odisk/gtac/cmd/ekta/sbs1428+457.cmd 9. LTA File : /rawdata/4jun/18_055_04jun2010.lta, /rawdata1/4jun/18_055_04jun2010.ltb 10. GSB File : /gsbifrdata/4jun/18_055_04jun2010_gsb.lta.1 11. LogFlag File : /odisk/online1/logflags/18_055.FLAGS ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 1408.18 MHz ,RF2 : 1408.18 MHz, SA1 : 0 dB, SA2 : 0 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 1340 MHz, ILO2 : 1340 MHz, IVLO1 : 68.18 MHz, IVLO2 : 68.18 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 16+4 dB, 16 MHz,ON, IF-CH2 : 16+4 dB, 16 MHz,ON 15. BB BW(KHz) & BB ALC : 2000 KHz, ON CORRELATOR SETTINGS : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 1408.18 1408.18 1340 1340 68.18 68.18 18. Integration Time : 128 LTA ~ 16.908 Sec. 19. No of Antennas Working(Fringing) :29 20. Name of Non-Working Antennas (with reason for each) : GHB - problem with arm attns - no self no cross C01 - Off. C03 - phase not stable E03 - no fringe S01 - mcm time out S03 - servo problem 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 23:00 - 05:00 23. ONLINE Machine : Shivneri 24. Correlator Mode : IndianPolar 25. Comments (During Observations) : 23:00 : Started setup. GHB - problem with arm attns - no self no cross 00:00 : Started setup for GSB.. settings :- ASQ bandwidth=16mhz channal=256 Final bw = 2Mhz fractional bw=0.375 00:22 : Started scan on 3c48 for 5 min. 00:35 : Started command file. 04:07 : Started scan on 3c48 for 20min 05:00 : Observing session over.