GTAC Observation Log 1. Date : 29/12/2011 2. Observation Sr. No. : 5727 3. Observer : Alka Mishra 4. Observer's Email : alkam7@gmail.com 5. Project Name : HI observations of gaint low surface brightness galaxies-Interacting or isolated 6. Project Code : 21_069 7. Operator(s) : Deepak, Nilesh, Shilpa 8. Command File : /odisk/gtac/cmd/alka/obs_29dec11.cmd 9. LTA File : /gsbifrdata/29dec/21_069_29dec2011.lta 10. LogFlag File : /odisk/online1/logflags/21_069.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1392 MHz ,RF2 : 1392 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1330 MHz, ILO2 : 1330 MHz , IVLO1 : 62 MHz, IVLO2 : 62 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. GAIN EQ : ON 17. Stokes : Total_Intensity 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. ACQ BW : 16 MHz 21. Maximum Channels : 512 22. IFBW (MHz) : LO5 (KHz) : 16:138000-167000 23. Final Bandwidth (MHz): OFF MHz; Step # 0 24. Frequency Parameters (TPA) : 1392 1392 1330 1330 62 62. 25. Integration Time : 16.106 Sec. 26. No of Antennas Working(Fringing) :29 27. Name of Non-Working Antennas (with reason for each) : E05 : Servo maintenance. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 22:00 - 07:10 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 22:05 : Started scan on 3C147. 22:30 : Started command file. 02:01 : Stopped command file. 02:06 : Started scan on 3C147. 02:21 : Stopped scan. 02:27 : Restarted command file. 04:48 : Stopped command file. 04:51 : Started scan on 3C147. 05:07 : Stopped scan. 05:09 : Restarted command file. 06:47 : Stopped command file. 06:52 : Started scan on 3C286. 07:10 : Stopped scan and observing session over.