GTAC Observation Log 1. Date : 22/03/2015 2. Observation Sr. No. : 7694 3. Observer : Mamta Pandey-Pommier, Francesco Massaro, Marcello Giroletti, Francoise Combes, B. S. Acharya, Joydeep Bagchi, Bruno Guiderdoni 4. Observer's Email : mamtapan@gmail.com, fmassaro79@gmail.com, giroletti@ira.inaf.it, francoise.combes@obspm.fr, acharya@mailhost.tifr.res.in, joydeep@iucaa.ernet.in, bruno.guiderdoni@univ-lyon1.fr 5. Project Name : Radio-gamma ray connection in Blazars 6. Project Code : 27_017 7. Operator(s) : Navnath, Pramod 8. Command File : /odisk/gtac/cmd/mamta/27_017/21mar15.cmd 9. LTA File : /gsbifrdata/21mar/27_017_21mar2015.lta 10. LogFlag File : /odisk/online1/logflags/27_017.FLAGS.2 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 629 MHz ,RF2 : 253 MHz, SA1 : 0 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 680 MHz, ILO2 : 304MHz , 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, 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 : 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) : 629 253 680 304 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : W06 : Taken for Feed cage Painting. W04 : Low fringe at 175 pol (235MHz). C10 : No feed of 235MHz. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 21 Mar 2015 21:00:00 - 22 Mar 2015 04:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 20:30 : Started set up. 20:57 : Started scan on 3C286. 21:09 : Stopped scan. Note : Because of Scintillation, we recorded data on 3C147. 21:14 : Started scan on 3C147 for 8 min. 21:30 : Started command file. '/odisk/gtac/cmd/mamta/27_017/21mar15.cmd' 04:00 : Observation session over.