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GCN Circular 34481

Subject
Fermi trigger No 713974668: Global MASTER-Net observations report
Date
2023-08-19T01:33:04Z (9 months ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
legacy email
V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko, 
G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov,  D.Cheryasov, Ya.Kechin
(Lomonosov Moscow State University, SAI, Physics Department),

R. Podesta, C.Lopez, F. Podesta, C.Francile 
(Observatorio Astronomico Felix Aguilar OAFA),

R. Rebolo, M. Serra 
(The Instituto de Astrofisica de Canarias),

D. Buckley 
(South African Astronomical Observatory),

O.A. Gres, N.M. Budnev
(Irkutsk State University, API),

L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez 
(INAOE, Guillermo Haro Astrophysics Observatory),

A. Tlatov, D. Dormidontov 
(Kislovodsk Solar Station of the Pulkovo Observatory),

A. Gabovich, V.Yurkov 
(Blagoveschensk Educational State University)


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB230817.60 (trigger No 713974668,07h 55m 24.00s , +21d 31m 01.2s, R=28.7) errorbox  1 days 19084 sec after notice time and 1 days 19116 sec after trigger time at 2023-08-18 19:36:20 UT, with upper limit up to  18.2 mag. The observations began at zenith distance = 85 deg. The sun  altitude  is -29.6 deg. 

The galactic latitude b = 24 deg., longitude l = 200 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2255394

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

  105581 | 2023-08-18 19:36:20 |   MASTER-Kislovodsk | (07h 40m 42.00s , +51d 55m 13.4s) |   C |   130 | 15.8 |        
  117523 | 2023-08-18 22:55:56 |   MASTER-Kislovodsk | (07h 10m 31.31s , +50d 35m 24.8s) |   C |    60 | 17.1 |        
  117523 | 2023-08-18 22:55:56 |   MASTER-Kislovodsk | (07h 16m 47.71s , +50d 11m 52.6s) |   C |    60 | 17.2 |        
  117884 | 2023-08-18 23:01:57 |   MASTER-Kislovodsk | (07h 10m 38.53s , +50d 37m 26.1s) |   C |    60 | 17.2 |        
  117884 | 2023-08-18 23:01:57 |   MASTER-Kislovodsk | (07h 16m 49.66s , +50d 13m 06.0s) |   C |    60 | 18.0 |        
  118666 | 2023-08-18 23:14:59 |   MASTER-Kislovodsk | (07h 10m 40.32s , +50d 36m 22.2s) |   C |    60 | 17.2 |        
  120068 | 2023-08-18 23:38:12 |   MASTER-Kislovodsk | (06h 37m 26.81s , +35d 17m 51.2s) |   C |    80 | 17.2 |        
  120178 | 2023-08-18 23:38:12 |   MASTER-Kislovodsk | (06h 37m 26.81s , +35d 17m 51.2s) |   C |   300 | 18.2 |  Coadd 
  120068 | 2023-08-18 23:38:12 |   MASTER-Kislovodsk | (06h 42m 06.50s , +34d 55m 52.2s) |   C |    80 | 16.3 |        
  120179 | 2023-08-18 23:39:52 |   MASTER-Kislovodsk | (06h 37m 32.83s , +35d 16m 47.4s) |   C |   100 | 17.6 |        
  120179 | 2023-08-18 23:39:52 |   MASTER-Kislovodsk | (06h 42m 12.51s , +34d 54m 30.9s) |   C |   100 | 17.2 |        
  120309 | 2023-08-18 23:41:52 |   MASTER-Kislovodsk | (06h 37m 27.81s , +35d 15m 48.8s) |   C |   120 | 17.8 |        
  120309 | 2023-08-18 23:41:52 |   MASTER-Kislovodsk | (06h 42m 07.54s , +34d 53m 22.0s) |   C |   120 | 18.0 |        
  120464 | 2023-08-18 23:44:12 |   MASTER-Kislovodsk | (06h 37m 33.76s , +35d 15m 57.1s) |   C |   150 | 17.9 |        
  120464 | 2023-08-18 23:44:12 |   MASTER-Kislovodsk | (06h 42m 13.65s , +34d 53m 24.8s) |   C |   150 | 18.2 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.


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