GTAC Observation Log 1. Date : 04/01/2011 2. Observation Sr. No. : 5180 3. Observer : Betsey Adams 4. Observer's Email : betsey@astro.cornell.edu 5. Project Name : Very Massive Underluminous Galaxies from ALFALFA 6. Project Code : 19_005 7. Operator(s) : Nilesh, 8. Command File : /odisk/gtac/cmd/19_005/agc7686.cmd, /odisk/gtac/cmd/19_005/agc213964.cmd 9. LTA File : 10. GSB File : /gsbifrdata/5jan/19_005_5jan2011_gsb.lta, /gsbifrdata/5jan/19_005_5jan2011_gsb.lta.1 11. LogFlag File : /odisk/online1/logflags/19_005.FLAGS.17, /odisk/online1/logflags/19_005.FLAGS.19 ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 1385 MHz ,RF2 : 1385 MHz, SA1 : 0 dB, SA2 : 0 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 1315 MHz, ILO2 : 1315 MHz, IVLO1 : 70 MHz, IVLO2 : 70 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 10+12 dB, 16 MHz,ON, IF-CH2 : 10+12 dB, 16 MHz,ON 15. BB BW(KHz) & BB ALC : 4000 KHz, ON CORRELATOR SETTINGS : GHB Settings : 16. GHB Channels : 0:127:1 17. Correlator Mode : IndianPolar 18. Frequency Parameters (TPA) : 1385 1385 1315 1315 70 70 GSB Settings : 19. Maximum Channels : 512 20. Final Bandwidth (MHz): 4 MHz; Step # 2 21. IFBW (MHz) : LO5 (KHz) : Custom :- 16 : 139500 - 165500 22. Stokes : Total_Intensity 23. Beam - 1 : OFF 24. Beam - 2 : OFF 25. Integration Time : 128 LTA ~ 16.908 Sec. 26. No of Antennas Working(Fringing) :29 27. Name of Non-Working Antennas (with reason for each) : E02 : Maintenance. **NOTE : HARDWARE CORRELATOR NOT USED FOR OBSERVATION. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 03:30 - 07:00 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 03:30 : Started settings for project. ------------------------------------------------- Project code : 19_005 Project title: LargeGalaxies Source list : /odisk/gtac/cmd/19_005/19_005.list Command file : /odisk/gtac/cmd/19_005/agc7686.cmd RF band : 1390 LO (1) : 1315 IF BW : 16 BB BW : 4 GHB_TPA Not USED lta Not USED GSB: 4 MHz. LO5 = 139.5, 165.5 MHz. The line is in the 3rd quadrant. Use step # 2. Band starts at 1368.833 ------------------------------------------------- 03:41 : Started scan on 3c286 for ~10min. 03:53 : Started command file. '/odisk/gtac/cmd/19_005/agc7686.cmd'. 04:24 : C14 ABC reset. 04:35 : C14 started working. 04:47 : Stopped scan and command file, and changed settings. ------------------------------------------------- Source list : /odisk/gtac/cmd/19_005/19_005.list Command file : /odisk/gtac/cmd/19_005/agc213964.cmd Project code : 19_005 Project title: LargeGalaxies RF band : 1390 LO (1) : 1305 LO (4) : 68.1 IF BW : 16 BB BW : 4 GHB_TPA Not USED. lta Not USED. GSB: 4 MHz. LO5 = 140.5, 164.5 MHz. The line is in the 3rd quadrant. Use step # 2. Band starts at 1372.833 ------------------------------------------------- 04:58 : Started scan on 3c286 for ~8min. 05:10 : Started command file. 06:45 : Stopped scan and command file. 06:46 : Started scan on 1120+143 for ~5min. 06:56 : Started scan on 3c286 for ~8min. 07:05 : Stopped scan and observation session closed. -------------------------------------------------