GTAC Observation Log 1. Date : 22/03/2009 2. Observation Sr. No. : 4258 3. Observer : akash 4. Observer's Email : akash@aries.res.in,sumana@aries.res.in 5. Project Name : J0318+684 6. Project Code : 15DJS01 7. Operator(s) : Deepak, Navanath, Rupsingh, Shilpa 8. Command File : /odisk/gtac/cmd/15djs01/march22.cmd 9. LTA File : /rawdata/22mar/15djs01_22mar2009.lta, /rawdata1/22mar/15djs01_22mar2009.ltb, /rawdata/22mar/15djs01_22mar2009_diffstop.lta, /rawdata1/22mar/15djs01_22mar2009_diffstop.ltb 10. LogFlag File : /btemp2/logflags/15DJS01.FLAGS.13 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) :28 20. Name of Non-Working Antennas (with reason for each) : W04 : Low self W01 : Parked for painting. 21. Note for Backup : -- 22. Start and End Time of Obs.(IST): 11:30 - 21:14 23. ONLINE Machine : Bhaskar 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." --------------------------------------------------- 11:30 : Started setup for 15DJS01 observation. settings : Defauld dual with ALC's ON. 11:43 : Started scan on 3C48 for 20min. 11:55 : ONLINE LOG FILE CHANGED. 12:07 : Started command file /odisk/gtac/cmd/15djs01/march22.cmd 21:14 : Stopped command file and observing session over.