GTAC Observation Log

1. Date : 20/06/2017
2. Observation Sr. No. : 9506
3. Observer : Alka Mishra, Ramya Sethuram, SMITHA SUBRAMANIAN, Mousumi Das, Lei Hao
4. Observer's Email : alkam7@gmail.com, sramyaraman@gmail.com, smithaharisharma@gmail.com, chandaniket@gmail.com, haol@shao.ac.cn
5. Project Name : HI  observations of Giant Low Surface Brightness galaxies: Revealing the true nature of extended disks
6. Project Code : 32_027
7. Operator(s) : Deepak, Nilesh, Shilpa
8. Command File : /odisk/gtac/cmd/32_027/20jun17/obs.cmd
9. LTA File : /gsbifrdata1/20jun/32_027_20jun2017.lta
10. LogFlag File : /odisk/online1/logflags/32_027.FLAGS.3

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1355 MHz ,RF2 : 1355 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1290 MHz, ILO2 : 1290MHz , IVLO1 : 65 MHz, IVLO2 : 65 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 16 MHz,ON, IF-CH2 : 4+14 dB, 16 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 : 16.666666 MHz
24. Final BW : 4 MHz; Step # 1
25. Maximum Channels : 256
26. Channel Numbers : 0:255:1
27. LO5 -1  : 135
28. LO5 -2  : 170

29. Frequency Parameters (TPA) : 1355 1355 1290 1290 65 65
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :30

32. Name of Non-Working Antennas (with reason for each) :

33. Note for Backup :

34. Start and End Time of Obs.(IST): 20 Jun 2017 03:50:00 - 20 Jun 2017 09:29:00

35. ONLINE Machine : Shivneri

36. No of Antennas Working(Fringing) at the end :27

37. Comments (During Observations) :
03:50 : Started settings.
03:58 : Started scan on 3C48 for 15min.

04:14 : Started command file.
        /odisk/gtac/cmd/32_027/20jun17/obs.cmd

07:29 : C05 frequently applying azimuth brakes.

08:12 : W-arm power failed.
09:02 : W-arm started working except W01, W03 and W05.
        W01, W03 servo problem and W05 no fringe. 

09:09 : Stopped command file.

09:14 : Started scan on 3C48.
09:17 : W05 started working.
09:29 : Stopped scan and observing session over.