GTAC Observation Log 1. Date : 29/07/2009 2. Observation Sr. No. : 4439 3. Observer : Aritra Basu 4. Observer's Email : aritra@ncra.tifr.res.in,dmitra@ncra.tifr.res.in,yogesh@ncra.tifr.res.in,ishwar@ncra.tifr.res.in 5. Project Name : GOSPEL 6. Project Code : 16_269 7. Operator(s) : Jayprakash, Nilesh, Rupsingh, Santaji, 8. Command File : /odisk/gtac/cmd/aritra/16_269.s4.29jul.1.cmd, /odisk/gtac/cmd/aritra/16_269.s4.29jul.2.cmd 9. LTA File : /rawdata/29jul/16_269_29jul09.lta, /rawdata1/29jul/16_269_29jul09.ltb 10. LogFlag File : /odisk/online1/logflags/16_269.FLAGS.7 ANTENNA SETTINGS : 11. RF Freq(MHz) & Solar Attn(dB)- RF1 : 325 MHz ,RF2 : 325 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 255 MHz, ILO2 : 255 MHz, IVLO1 : 70 MHz, IVLO2 : 70 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 32 MHz,ON 14. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 325 325 255 255 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) : S06 : Low gain. W05 : No fringe W02 : Stopped fringing 21. Note for Backup : -- 22. Start and End Time of Obs.(IST): 19:30 - 06:40 23. ONLINE Machine : Shivneri 24. Correlator Mode : IndianPolar 25. Comments (During Observations) : 19:32 : Started scan on 3C286 for 20m. 19:52 : Stopped scan. 19:55 : Command file started. '/odisk/gtac/cmd/aritra/16_269.s4.29jul.1.cmd' 19:59 : Stopped command file. 20:07 : Restarted command file. 20:08 : S06 started fringing (low gain). 22:06 : Stopped command file. 22:09 : Started command file. '/odisk/gtac/cmd/aritra/16_269.s4.29jul.2.cmd' 22:10 : W02 stopped fringing. 22:51 : W02 started fringing (RF reset). 00:09 : W02 stopped fringing. 06:15 : stopped the command file. 06:22 : scan started on 3c147. 06:40 : stopped the scan and observation session over.