GTAC Observation Log 1. Date : 26/03/2016 2. Observation Sr. No. : 8498 3. Observer : Tiziana Venturi, Gianni Bernardi, Rossella Cassano, Dharam Vir Lal, Daniele Dallacasa, Melanie Johnston-Hollitt, Gianfranco Brunetti 4. Observer's Email : tventuri@ira.inaf.it, giannibernardi75@gmail.com, rcassano@ira.inaf.it, dharam@ncra.tifr.res.in, daniele.dallacasa@unibo.it, Melanie.Johnston-Hollitt@vuw.ac.nz, brunetti@ira.inaf.it 5. Project Name : Hunting for radio halos in low-mass galaxy clusters. Follow-up observations of KAT-7 candidates 6. Project Code : 29_012 7. Operator(s) : Rupsing, Sachin, Surender 8. Command File : /odisk/gtac/cmd/29_012/obs.cmd 9. LTA File : /gsbifrdata1/26mar/29_012_26mar16.lta 10. LogFlag File : /odisk/online1/logflags/29_012.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+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 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 : 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 : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C06 : Servo problem. S06 : Feed cage painting. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 26 Mar 2016 06:00:00 - 26 Mar 2016 12:13:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 06:07 : Started scan on 3C286 for ~ 12.348 min. 06:27 : Started command file. 08:22 : C04 applied brakes. 09:18 : C04 released brakes. 09:22 : S06 released for observation. 10:02 : E06 taken for Mech work. 10:02 : C11 taken for cherry picker. 10:10 : C06 Released for observation. 11:49 : Stopped command file. 11:58 : Started scan on 3C48. 12:13 : Stopped scan and observing session is over.