GTAC Observation Log 1. Date : 04/06/2010 2. Observation Sr. No. : 4898 3. Observer : Chandreyee Sengupta 4. Observer's Email : sengupta@ncra.tifr.res.in,sengupta.chandreyee@gmail.com 5. Project Name : HI study of the outer disks of Markarian galaxies 6. Project Code : 18_038 7. Operator(s) : Amruta, Navanath, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/csg/mrk334.cmd 9. LTA File : /rawdata/4jun/18_038_04jun2010.lta, /rawdata1/4jun/18_038_04jun2010.ltb 10. GSB File : /gsbifrdata/4jun/18_038_04jun2010_gsb.lta 11. LogFlag File : /odisk/online1/logflags/18_038.FLAGS ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 1385.9246 MHz ,RF2 : 1385.9246 MHz, SA1 : 0 dB, SA2 : 0 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 1320 MHz, ILO2 : 1320 MHz, IVLO1 : 65.9246 MHz, IVLO2 : 65.9246 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 : 8000 KHz, ON CORRELATOR SETTINGS : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 1385.9246 1385.9246 1320 1320 65.9246 65.9246 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): 06:00 - 13:05 23. ONLINE Machine : Shivneri 24. Correlator Mode : IndianPolar 25. Comments (During Observations) : 06:00 : Started setup. GHB - problem with arm attns - no self no cross GSB Settings :- ASQ bandwidth=16MHz Channal=512 Final bw = OFF 06:33 : Started scan on 3C48. 06:45 : Stopped scan. 06:49 : Started command file. 08:00 : W01 not fringing. 10:18 : Stopped command file. 10:25 : Started scan on 3C147. 10:29 : W01 started working. 10:31 : S03 started working. 10:40 : Stopped scan. 10:45 : Restarted command file. 12:52 : Stopped command file. 12:56 : Started scan on 3C147. 13:05 : Stopped scan and observing session over.