GTAC Observation Log 1. Date : 25/07/2015 2. Observation Sr. No. : 7943 3. Observer : Y.D. Mayya, Alka Mishra, Jose Antonio Garcia 4. Observer's Email : ydm@inaoep.mx, alka7mishra@yahoo.co.in, j.antonio.garcia.barreto@astro.unam.mx 5. Project Name : Low frequency observations of the Cartwheel ring galaxy 6. Project Code : 28_032 7. Operator(s) : Sachin, Surender 8. Command File : /odisk/gtac/cmd/28_032/25july_obs.cmd 9. LTA File : /gsbifrdata1/25jul/28_032_25jul2015.lta 10. LogFlag File : /odisk/online1/logflags/28_032.FLAGS 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 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 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 : 33.333333 MHz 24. Final BW : 33.333333 MHz; Step # 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 591 591 540 540 51 51 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) : C12 : Servo problem. S06 : Low fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 25 Jul 2015 02:00:00 - 25 Jul 2015 08:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 02:11 : Started scan on 3C48 for 15 mins. 02:27 : Stopped scan on 3C48. 02:30 : Started command file. 08:34 : Stopped command file. 08:39 : Started scan on 3C48. 08:55 : Stopped scan and observing session is over.