GTAC Observation Log 1. Date : 14/12/2009 2. Observation Sr. No. : 4653 3. Observer : J N Chengalur, Philip Lah 4. Observer's Email : chengalu@ncra.tifr.res.in,plah@mso.anu.edu.au 5. Project Name : GGDP 6. Project Code : 17_027 7. Operator(s) : Deepak, Rupsingh, Santaji, 8. Command File : /odisk/gtac/cmd/philiplah/a370.cmd, /odisk/gtac/cmd/philiplah/zcosmos.cmd, /odisk/gtac/cmd/philiplah/vvds14.cmd, /odisk/gtac/cmd/philiplah/cl0024.cmd 9. LTA File : /rawdata/14dec/17_027_14dec2009.lta.1, /rawdata1/14dec/17_027_14dec2009.ltb.1, /rawdata/15dec/17_027_15dec2009.lta, /rawdata1/15dec/17_027_15dec2009.ltb, /rawdata/15dec/17_027_15dec2009.lta.1, /rawdata1/15dec/17_027_15dec2009.ltb.1, /rawdata/15dec/17_027_15dec2009.lta.2, /rawdata1/15dec/17_027_15dec2009.ltb.2, /rawdata/15dec/17_027_15dec2009.lta.3, /rawdata1/15dec/17_027_15dec2009.ltb.3 10. LogFlag File : /odisk/online1/logflags/17_027.FLAGS.14, /odisk/online1/logflags/17_027.FLAGS.15 ANTENNA SETTINGS : 11. RF Freq(MHz) & Solar Attn(dB)- RF1 : 1040 MHz ,RF2 : 1040 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 1110 MHz, ILO2 : 1110 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) : 1040 1040 1110 1110 70 70 18. Integration Time : 128 LTA ~ 16.908 Sec. 19. No of Antennas Working(Fringing) :28 20. Name of Non-Working Antennas (with reason for each) : E05 : For painting. C13 : For painting. 21. Note for Backup : -- 22. Start and End Time of Obs.(IST): 17:00 - 23:06 23. ONLINE Machine : Shivneri 24. Correlator Mode : IndianPolar 25. Comments (During Observations) : 17:00 A370 : ----------------------- 1040 1040 1110 1110 70 70 GSB lta file /gsbifrdata/14dec/17_027_14dec2009_gsb.lta.1 17:03 : scan started on 3c48. 17:18 : command file started. 18:00 : C13 and E05 back to observation. 00:54 : Command file stopped. 00:55 : Started scan on 0323+055 for 5mins. 01:02 : Started scan on 3C48 for 10mins. 01:12 : scan stopped. Restarted das chain. -------------------------------------------- 01:17 : Started new lta files. GSB data file:/gsbifrdata/15dec/17_027_15dec2009_gsb.lta 01:17 : Started scan 3C48 for 10mins. 01:33 : Started command file /odisk/gtac/cmd/philiplah/zcosmos.cmd 04:17 : GSB unstable phase in scan#7 for E-arm and W-arm antennas. 07:35 : Stopped command file. 07:36 : Started scan on phase cal. 07:43 : Stopped scan. 07:50 : Started scan on 3C286. 08:00 : Stopped scan. ----------------------------------------------------------------- 08:01 : Setup and record file change. GSB file : /gsbifrdata/15dec/17_027_15dec2009_gsb.lta.1 TPA 1076 1076 1145 1145 69 69 08:06 : Started scan on 3C286. 08:17 : Stopped scan. 08:22 : E05 taken for painting. 08:26 : Started command file '/odisk/gtac/cmd/philiplah/vvds14.cmd' 09:04 : S-arm MSEB power fail. 09:30 : C13 taken for painting. 13:25 : Stopped command file. 13:27 : Started scan on phase cal. 13:35 : Stopped scan. 13:37 : Started scan on 3C286. 13:45 : Stopped scan. --------------------------------------------------------------- 14:00 : Setup & record file changed. GSB file:/gsbifrdata/15dec/17_027_15dec2009_gsb.lta.2 TPA 1024 1024 1095 1095 71 71. 14:26 : Started command file '/odisk/gtac/cmd/philiplah/cl0024.cmd' 17:45 : Started scan on 3C48 for 15min. 18:05 : scan stopped. setup changed : tpa 1040 1049 1110 1110 70 70 GSB file:/gsbifrdata/15dec/17_027_15dec2009_gsb.lta.3 18:09 : Started scan on 3C48 for 10min. 18:22 : Started command file 22:57 : Started scan on 3C48 for 10min. 23:06 : stopped the scan and observation session over.