GTAC Observation Log

1. Date : 24/05/2023
2. Observation Sr. No. : 15438
3. Observer : Tiziana Venturi, Paola Merluzzi, Giovanni Busarello, Giacintucci Simona, Gabriella Di Gennaro, Viviana Casasola
4. Observer\'s Email : tventuri@ira.inaf.it, paola.merluzzi@inaf.it, giovanni.busarello@inaf.it, simona.giacintucci@nrl.navy.mil, gabriella.di.gennaro@hs.uni-hamburg.de, viviana.casasola@inaf.it
5. Project Name : Exploring ram-pressure stripping in interacting galaxy groups in the outskirts of the Shapley Supercluster
6. Project Code : 44_024
7. Operator(s) : Pramod, Sachin
8. Command File : /odisk/gtac/cmd/obs.py
9. LTA File : /gsbifrdata/23may/44_024_23may2023_b4_gsb.lta.1, /gsbifrdata/23may/44_024_23may2023_b4_gsb.lta, /gwbifrdata1/23may/44_024_23may2023_b4_gwb.lta.3, /gwbifrdata1/23may/44_024_23may2023_b4_gwb.lta.2, /gwbifrdata1/23may/44_024_23may2023_b4_gwb.lta.1, /gwbifrdata1/23may/44_024_23may2023_b4_gwb.lta
10. LogFlag File :  

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON

GSB SETTINGS :

14. GSB Host : gsbm1_shivneri
15. GSB Mode : Realtime
16. GSB LTA : 8
17. GSB CTRL : ONLINE/TGC
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 : 0 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) : 591 591 540 540 51 51
30. Integration Time : 2.0132 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): 23 May 2023 18:00:00 - 24 May 2023 01:00:00

35. ONLINE Machine : TGC

36. No of Antennas Working(Fringing) at the end :30

37. RFI Status :

38. Comments (During Observations) :
******************************************************************* 
Important Note for Observer:
The refurbishment work of the W02 antenna reflector surface is 
currently in progress. The refurbishment of the inner sectors 
will commence from 16th May 2023 onwards. Please note that this 
ongoing work may affect the sensitivity of the antenna and could 
also alter the primary beam pattern depending on the size of the
holes present on the surface. We advise exercising caution in 
using the antenna, particularly if your targets are extended or 
if you are using a wide field. 
******************************************************************* 
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18:21:59 : Started scan on 3C286 for ~ 10.2005 min.
18:44:45 : Started scan on 1311-222 for ~ 4.16075 min.
18:50:53 : Started scan on ShaSS-421 for ~ 24.1592 min.
19:17:00 : Started scan on 1311-222 for ~ 4.20548 min.
19:22:37 : Started scan on ShaSS-421 for ~ 24.2039 min.
19:48:17 : Started scan on 1311-222 for ~ 4.16075 min.
19:53:58 : Started scan on ShaSS-421 for ~ 24.1592 min.
20:19:47 : Started scan on 1311-222 for ~ 4.16075 min.
20:25:32 : Started scan on ShaSS-421 for ~ 3.98179 min.

20:24 : ACQ for GWB killed.

20:40:39 : Restarted correlator and started command file
Started scan on 1311-222 for ~ 6.30823 min.
20:53:27 : Started scan on ShaSS-421 for ~ 24.1592 min.
21:19:38 : Started scan on 1311-222 for ~ 4.16075 min.
21:25:26 : Started scan on ShaSS-421 for ~ 4.96605 min.
21:31 : ACQ for GWB killed.
Also observed that AGN1 hung and took more time to clearing up the problem.
22:49 : Restarted correlator and restarted command file.
22:49:18 : Started scan on 1311-222 for ~ 4.20548 min.
22:55:08 : Started scan on ShaSS-421 for ~ 5.50292 min.
23:56:45 : Started scan on ShaSS-421 for ~ 24.2039 min.
00:22:03 : Started scan on 1311-222 for ~ 4.16075 min.
00:27:22 : Started scan on ShaSS-421 for ~ 17.1799 min.
00:48:41 : Started scan on 3C286 for ~ 11.4085 min.
01:00 : Stopped scan and observation session is over.
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