GTAC Observation Log 1. Date : 30/11/2009 2. Observation Sr. No. : 4621 3. Observer : Ramana Athreya 4. Observer's Email : rathreya@iiserpune.ac.in 5. Project Name : Clusters with Cavities 6. Project Code : 17_016 7. Operator(s) : Jayprakash, Rupsingh, Santaji, 8. Command File : /odisk/gtac/cmd/rathreya/17c016a.cmd, /odisk/gtac/cmd/rathreya/17c016b.cmd 9. LTA File : /rawdata/30nov/17_016_30nov2009.lta, /rawdata1/30nov/17_016_30nov2009.ltb 10. LogFlag File : /odisk/online1/logflags/17_016.FLAGS ANTENNA SETTINGS : 11. RF Freq(MHz) & Solar Attn(dB)- RF1 : 614 MHz ,RF2 : 244 MHz, SA1 : 0 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 680 MHz, ILO2 : 310 MHz, IVLO1 : 66 MHz, IVLO2 : 66 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 6 MHz,ON 14. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 614 244 680 310 66 66 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) : E05 - servo problem. W05 - phase not stable @ 235 MHz. C12 - phase not stable @ 235 MHz. 21. Note for Backup : -- 22. Start and End Time of Obs.(IST): 23:55 - 08:00 23. ONLINE Machine : Lenyadri 24. Correlator Mode : IndianPolar 25. Comments (During Observations) : GSB lta file. /gsbifrdata/30nov/17_016_30nov2009_gsb_2s.lta ----------------------------------------------- 23:58 : scan started on 3c147. 00:21 : command file started 17c016a.cmd 06:30 : command file changed to 17c016b.cmd 07:35 : Stopped command file. 07:37 : Started scan on phase cal. 07:42 : Stopped scan. 07:45 : Started scan on 3C286. 08:00 : Stopped scan and observation closed.