GTAC Observation Log 1. Date : 30/05/2015 2. Observation Sr. No. : 7810 3. Observer : John Michael Cannon, Stephen Pardy, Göran Östlin, Emily Freeland, Matthew Hayes, Lucia Guaita, Daniel Kunth, Peter Laursen, Jens Melinder, Ivana Orlitova, Hector Oti-Floranes, Johannes Puschnig, Thøger Emil Rivera-Thorsen, Andreas Sandberg, Daniel Schaerer, Anne Verhamme 4. Observer's Email : jcannon@macalester.edu, spardy@astro.wisc.edu, ostlin@astro.su.se, emily@astro.su.se, matthew@astro.su.se, lguai@astro.su.se, kunth@iap.fr, pela@dark-cosmology.dk, jens@astro.su.se, ivana.orlitova@unige.ch, h.oti@crya.unam.mx, johannes.puschnig@astro.su.se, trive@astro.su.se, sandberg@astro.su.se, daniel.schaerer@unige.ch, anne.verhamme@unige.ch 5. Project Name : Neutral Hydrogen in the LARS\\+eLARS Galaxies 6. Project Code : 28_054 7. Operator(s) : Nilesh, Rupsing 8. Command File : /odisk/gtac/cmd/28_054/s03_obs.cmd,/odisk/gtac/cmd/28_054/s08_obs.cmd 9. LTA File : /gsbifrdata/30may/28_054_30may2015.lta.1,/gsbifrdata/30may/28_054_30may2015.lta 10. LogFlag File : /odisk/online1/logflags/28_054.FLAGS.1,/odisk/online1/logflags/28_054.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1342 MHz ,RF2 : 1342 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1280 MHz, ILO2 : 1280MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 16.666666 MHz 24. Final BW : 16.666666 MHz; Step # 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 1342 1342 1280 1280 62 62 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C13 : Low fringe @130 pole. S04 : BLDC. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 30 May 2015 02:00:00 - 30 May 2015 13:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :25 37. Comments (During Observations) : 02:11 : Started scan on 3C286. 02:24 : Stopped scan 02:26 : Started command file "/odisk/gtac/cmd/28_054/s03_obs.cmd" 04:36 : Stopped command file. 04:47 : Started scan on 3C48. 05:00 : Stopped scan. -------------------------------------------------------------------------- 05:00 : tpa 1202 1202 1140 1140 62 62 Line Freq. 1212.015 MHz. ------------------------------- 05:08 : Started scan on 3C48. 05:21 : Stopped scan. 05:24 : Started command file "/odisk/gtac/cmd/28_054/s08_obs.cmd" 08:06 : Electrical power glitch in almost all antennas. E02,E04,W01,S03 - ABC resets, C09 - ABC time out. and C00 - Not releasing brakes. 08:07 : Stopped command file. 08:17 : Settings done. 08:18 : Restarted command file. C00 : Servo not releasing brakes. C09 : ABC time out. 09:26 : S03 taken for CST painting. 10:05 : C00 released for observation. 10:25 : W05 taken for mechanical work. 12:55 : Stopped command file. 12:57 : Started scan on phase cal ~ 5min. 13:03 : Started scan on 3c48 for ~ 10min. 13:14 : Stopped observation session.