GTAC Observation Log 

1. Date : 20/8/2012
2. Observation Sr. No. : 6102
3. Observer : Karen Lee Waddell, Narendra Patra
4. Observer's Email : karen.lee-waddell@rmc.ca,narendra@ncra.tifr.res.in
5. Project Name : HI Mapping of the Interacting Groups NGC 4725/4747 and NGC 871/876/877
6. Project Code : 22_009
7. Operator(s) : Navanath,
	Nilesh,
	
8. Command File : /odisk/gtac/cmd/22_009/field_b.cmd
9. LTA File : /gsbifrdata/20aug/22_009_20aug2012.lta
10. LogFlag File : /odisk/online1/logflags/22_009.FLAGS.4

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1391.7835 MHz ,RF2 : 1391.7835 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1330 MHz, ILO2 : 1330 MHz , IVLO1 : 61.7835 MHz, IVLO2 : 61.7835 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 : OFF 
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): 4 MHz; Step # 2

24. Frequency Parameters (TPA) : 1391.7835 1391.7835 1330 1330 61.7835 61.7835.
25. Integration Time : 16.106 Sec.
26. No of Antennas Working(Fringing) :27

27. Name of Non-Working Antennas (with reason for each) :
C14 - BLDC work.
W06 - Servo problem.
W01 : NO fringe.


28. Note for Backup :--

29. Start and End Time of Obs.(IST): 01:00 - 09:00

30. ONLINE Machine : Shivneri

31. Comments (During Observations) :
01:00 : Started setup.
01:25 : Started scan on 3C48 for 10min.
01:39 : Started cmd file.
         /odisk/gtac/cmd/22_009/field_b.cmd
02:01 : Electrical power failure for all antennas.
      : scan stopped, cmd file stopped.
02:20 : Electrical power resumed ...started setup.
02:40 : Re-started cmd file.

08:05 : E03 ABC time-out.
08:19 : E03 Started working.

08:41 : Stopped command file.
08:44 : Started scan on 3c48 for ~15min.
09:00 : Stopped scan and observation session over.