GTAC Observation Log 1. Date : 29/06/2010 2. Observation Sr. No. : 4935 3. Observer : Chandreyee Sengupta 4. Observer's Email : sengupta@ncra.tifr.res.in,sengupta.chandreyee@gmail.com 5. Project Name : ARP181 6. Project Code : 18_039 7. Operator(s) : Navanath, Nilesh, Rupsingh, Sachin, 8. Command File : /odisk/gtac/cmd/csg/arp181-610.cmd 9. LTA File : /rawdata/29jun/18_039_29jun2010.lta, /rawdata1/29jun/18_039_29jun2010.ltb 10. GSB File : /gsbifrdata/29jun/18_039_29jun2010_gsb.lta 11. LogFlag File : /odisk/online1/logflags/18_039.FLAGS ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 610 MHz ,RF2 : 610 MHz, SA1 : 0 dB, SA2 : 0 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 540 MHz, ILO2 : 540 MHz, IVLO1 : 70 MHz, IVLO2 : 70 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 32 MHz,ON 15. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 610 610 540 540 70 70 18. Integration Time : 128 LTA ~ 16.908 Sec. 19. No of Antennas Working(Fringing) :27 20. Name of Non-Working Antennas (with reason for each) : C05 : phase jumps.(GHB+GSB). C11 : freq. applying brake. S01 : No fringe. 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 10:00 - 18:00 23. ONLINE Machine : Shivneri 24. Correlator Mode : IndianPolar 25. Comments (During Observations) : # GSB settings: ACQ band width 32 mhz chann=256 chan. ---------------------------------------------------- 10:00 : Started settings for 18_039 project. 10:21 : Started scan on 3c147 for 10min. 10:35 : Started command file. /odisk/gtac/cmd/csg/arp181-610.cmd 11:55 : S-arm power failure. 12:45 : S-arm back in obs. 17:35 : Stopped command file. 17:37 : started scan on phase cal. 17:50 : Started scan on 3c286. 18:00 : stopped scan and observation closed.