GTAC Observation Log 1. Date : 09/06/2015 2. Observation Sr. No. : 7835 3. Observer : Jayanta Roy, Paul Ray, Bhaswati Bhattacharyya, Ben Stappers, Jayaram Narayanan Chengalur 4. Observer's Email : jayanta.roy@manchester.ac.uk, paul.ray@nrl.navy.mil, bhaswati.bhattacharyya@manchester.ac.uk, Ben.Stappers@manchester.ac.uk, chengalur@ncra.tifr.res.in 5. Project Name : Long-term radio timing follow-up of PSR J1227-4853, a redback pulsar in a LMXB-MSP transitioning system 6. Project Code : 28_045 7. Operator(s) : Rupsing 8. Command File : /odisk/gtac/cmd/jroy/28_045_9jun.cmd 9. LTA File : /gsbifrdata1/09jun/28_045_09jun2015_2s.lta 10. LogFlag File : /odisk/online1/logflags/28_045.FLAGS.6 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 24+4 dB, 32 MHz,OFF, IF-CH2 : 24+4 dB, 32 MHz,OFF 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 : OFF 20. Stokes : Total_Intensity 21. Beam - 1 : IA 22. Beam - 2 : PA 23. ACQ BW : 33.333333 MHz 24. Final BW : 33.333333 MHz; Step # 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 591 591 540 540 51 51 30. Integration Time : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C03 : Maintenance. S03 : No feed. S04 : BLDC. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 09 Jun 2015 18:00:00 - 09 Jun 2015 20:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 18:00 : W-arm taken for maintenance(Electrical). 18:25 : W-arm released for observation. -------------------------------------------------------------------------- 18:30 : Started setup. 18:45 : Power eq.and phasing on 1154-350 18:49 : Started command file. -------------------------------------------------------------------------- 19:30 : S-arm MSEB power failure. 19:30 : S01 and S02 removed from GAC. -------------------------------------------------------------------------- 20:00 : Stopped command file and observation session over.