GTAC Observation Log

1. Date : 23/07/2014
2. Observation Sr. No. : 7242
3. Observer : Sandeep K. Sirothia, Gopal krishna, Mukul Pradeep Mhaskey, Nimisha Kantharia, C.H. IshwaraChandra
4. Observer's Email : sirothia@ncra.tifr.res.in, krishna@ncra.tifr.res.in, mhamu3@gmail.com, ngk@ncra.tifr.res.in, ishwar@ncra.tifr.res.in
5. Project Name : Accurate determination of the sharply inverted spectra of (TGSS) extragalactic radio sources at metrewavelengths
6. Project Code : 26_063
7. Operator(s) : Navnath, Pramod
8. Command File : /odisk/gtac/cmd/26_063_21cm/20140723.cmd
9. LTA File : /gsbifrdata/23jul/26_063_23jul2014.lta
10. LogFlag File : /odisk/online1/logflags/26_063.FLAGS.5

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1371 MHz ,RF2 : 1371 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1320 MHz, ILO2 : 1320MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 32 MHz,ON

GSB SETTINGS :

14. GSB Host : gsbm1
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 : 33.333333 MHz
24. Final BW : 33.333333 MHz; Step # 0
25. Maximum Channels : 256
26. Channel Numbers : 0:255:1
27. LO5 -1  : 149
28. LO5 -2  : 156

29. Frequency Parameters (TPA) : 1371 1371 1320 1320 51 51
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :26

32. Name of Non-Working Antennas (with reason for each) :
C09 :  MCM link is not visible
S03 :  Servo Problem
W03 :  Taken for Maintenance
W05 :  Taken for Maintenance

33. Note for Backup :

34. Start and End Time of Obs.(IST): 23 Jul 2014 18:00:00 - 23 Jul 2014 20:25:00

35. ONLINE Machine : Shivneri

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

37. Comments (During Observations) :
18:00 : Started set up.
18:00 to 18:40 : Could not carry out observation because of high wind speed.
18:40 : started scan on 3C286.
18:50 : Stopped scan and started command file. 
         '/odisk/gtac/cmd/26_063_21cm/20140723.cmd'
20:07 : Stopped command file.  
20:15 : Started scan on 3C286. 
20:25 : Stopped scan and observation session is over.