GTAC Observation Log 1. Date : 08/05/2009 2. Observation Sr. No. : 4276 3. Observer : Rathreya 4. Observer's Email : rathreya@ncra.tifr.res.in 5. Project Name : A2261 6. Project Code : 16_117 7. Operator(s) : Jayprakash, 8. Command File : /odisk/gtac/cmd/rathreya/16c117a.cmd 9. LTA File : /rawdata/8may/16_117_08may2009.lta, /rawdata1/8may/16_117_08may2009.ltb, /rawdata/8may/16_117_08may2009_2s.lta, /rawdata1/8may/16_117_08may2009_2s.ltb 10. LogFlag File : /odisk/online1/logflags/16_117.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) :25 20. Name of Non-Working Antennas (with reason for each) : C05 : MCM 5 Time Out. C12 : Bad Band shape. E02 : Az brake prob. E06 : Painting. W01 : ABC Time Out. 21. Note for Backup : -- 22. Start and End Time of Obs.(IST): 00:00 - 06:00 23. ONLINE Machine : Shivneri 24. Correlator Mode : IndianPolar 25. Comments (During Observations) : -------------------------------------------- NOTE FOR THE USER : "The online fringe stopping algorithm was found to be in error by about 2s after 1Jan2009. This differential fringe rate was applied using the program diffstop. The fringe rate was corrected for an error of +2.0s, and the timestamps were also updated by the same amount." --------------------------------------------- 23:59 : Started the scan on 3c286 for 20min. 00:20 : Stopped the scan. 00:26 : Started the command file. 02:41 : C11 elevation brake prob. 05:45 : stopped the command file. 05:47 : Started scan on 3c48. 06:00 : Stopped the scan.