GTAC Observation Log 1. Date : 29/4/2014 2. Observation Sr. No. : 7073 3. Observer : Nissim Kanekar,Aditya JNHS 4. Observer's Email : nkanekar@ncra.tifr.res.in,aditya@ncra.tifr.res.in 5. Project Name : A search for associated HI 21cm absorption at high redshifts. 6. Project Code : 26_052 7. Operator(s) : Deepak,Nilesh,Rupsingh,Sachin,Shilpa, 8. Command File : /odisk/gtac/cmd/aditya/1015+359.cmd,/odisk/gtac/cmd/aditya/1020+400.cmd,/odisk/gtac/cmd/aditya/1240+381.cmd,/odisk/gtac/cmd/aditya/1030+415.cmd 9. LTA File : /gsbifrdata/29apr/26_052_29apr2014.lta,/gsbifrdata/29apr/26_052_29apr2014.lta.1,/gsbifrdata/29apr/26_052_29apr2014.lta.2,/gsbifrdata/29apr/26_052_29apr2014.lta.3, 10. LogFlag File : /odisk/online1/logflags/26_052.FLAGS.2,/odisk/online1/logflags/26_052.FLAGS.3,/odisk/online1/logflags/26_052.FLAGS,/odisk/online1/logflags/26_052.FLAGS.1,/odisk/online1/logflags/26_052.FLAGS.4, ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 631 MHz ,RF2 : 631 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 570 MHz, ILO2 : 570 MHz , IVLO1 : 61 MHz, IVLO2 : 61 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 Mode : Realtime 15. GSB LTA : 8 16. GSB CTRL : ONLINE 17. GSB Fstop : ON 18. GAIN EQ : ON 19. Stokes : TotIntensity 20. Beam - 1 : OFF 21. Beam - 2 : OFF 22. ACQ BW : 16.67 MHz 23. Final BW : 16.666666 MHz; Step # 0 24. Maximum Channels : 512 25. Channel Numbers : 0:511:1 26. LO5 -1 : 139.00 27. LO5 -2 : 166.00 28. Frequency Parameters (TPA) : 631 631 570 570 61 61. 29. Integration Time : 16.106112 Sec. 30. No of Antennas Working(Fringing) at the begining :27 31. Name of Non-Working Antennas (with reason for each) : S06 : BLDC work. S04 : Painting. C12 : Servo time out 32. Note for Backup : 33. Start and End Time of Obs.(IST): 18:00 - 02:00 34. ONLINE Machine : Shivneri 35. No of Antennas Working(Fringing) at the end :27 36. Comments (During Observations) : 18:14 : Started command file '/odisk/gtac/cmd/aditya/1015+359.cmd' 19:51 : Stopped command file. ------------------------------------------------------------------------ RF Band : 610 RF Band : 610 IF BW : 18 MHz Baseband BW : 16.67 MHz LO(1) : 740 MHz LO(5) : 139, 166 MHz LO(4) : 61, 61 MHz Step : 0 Channels : 512 TPA 679 679 740 740 61 61 ---------------------------------------------------------------------- 20:58 : C01,W01 and W02 no fringe due to lo1 problem(740MHz) ---------------------------------------------------------------------- 20:00 : Started command file '/odisk/gtac/cmd/aditya/1030+415.cmd' ---------------------------------------------------------------------- 21:00 : Scan no:-2 is bad. ---------------------------------------------------------------------- 21:05 : Restarted on source scan. 22:32 : Stopped command file. ---------------------------------------------------------------------- RF Band : 610 IF BW : 18 MHz Baseband BW : 16.67 MHz LO(1) : 560 MHz LO(5) : 138, 167 MHz LO(4) : 62, 62 MHz Step : 0 Channels : 512 TPA 622 622 560 560 62 62 22:38 : Started command file '/odisk/gtac/cmd/aditya/1020+400.cmd' 00:09 : stopped command file. ---------------------------------------------------------------------- 00:10 : Started settings as follows : RF Band : 610 IF BW : 18 MHz Baseband BW : 16.67 MHz LO(1) : 545 MHz LO(5) : 139, 166 MHz LO(4) : 61, 61 MHz Step : 0 Channels : 512 lta : 8m TPA 606 606 545 545 61 61 ---------------------------------------------------------------------- 00:16 : Started command file. '/odisk/gtac/cmd/aditya/1240+381.cmd'. 01:50 : stopped command file and closed observation session.