GTAC Observation Log

1. Date : 21/05/2016
2. Observation Sr. No. : 8595
3. Observer : Ewan O`Sullivan, Nimisha Kantharia
4. Observer's Email : eosullivan@cfa.harvard.edu, ngk@ncra.tifr.res.in
5. Project Name : The origin of the HI trail and ultra-steep radio structure in the NGC 5903/NGC 5898 group
6. Project Code : 30_020
7. Operator(s) : Rupsing, Shilpa
8. Command File : /odisk/gtac/cmd/ngk/30_020/obs.cmd
9. LTA File : /gsbifrdata/20may/30_020_20may2016.lta
10. LogFlag File : /odisk/online1/logflags/30_020.FLAGS.5

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1402 MHz ,RF2 : 1402 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1340 MHz, ILO2 : 1340MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 24+4 dB, 16 MHz,OFF, IF-CH2 : 24+4 dB, 16 MHz,OFF

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 : OFF
20. Stokes : Total_Intensity
21. Beam - 1 : OFF
22. Beam - 2 : OFF
23. ACQ BW : 16.666666 MHz
24. Final BW : 0 MHz; Step # 0
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 138
28. LO5 -2  : 167

29. Frequency Parameters (TPA) : 1402 1402 1340 1340 62 62
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) :
E06 : Scanning offset measurment.
S01 : Feed jam.
C05 : Phase variation.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 20 May 2016 21:00:00 - 21 May 2016 05:07:00

35. ONLINE Machine : Shivneri

36. No of Antennas Working(Fringing) at the end :26

37. Comments (During Observations) :
21:00 : Started settings.

21:15 : Power equalized on 3C286 @ 300 counts.
21:16 : Started scan on 3C286 for 15min.

21:36 : '/odisk/gtac/cmd/ngk/30_020/obs.cmd' command file started.
02:35 : W04 automatically got abc reset.
03:14 : W-arm power failed.

04:03 : W-arm started working. W02 shows low fringe.
04:03 : Target source set, so started scan on phase cal.

04:11 : Stopped scan.
04:16 : Started scan on 3C468.1.
04:42 : Stopped scan.

04:52 : Started scan on 3C48.
05:07 : Stopepd scan and observing session over.