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GCN Circular 33476

Subject
Fermi GRB 230314A: Global MASTER-Net observations report
Date
2023-03-14T10:45:22Z (a year ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
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-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the Fermi GRB 230314A ( Fermi GBM team, GCN 33474) errorbox  27256 sec after notice time and 27291 sec after trigger time at 2023-03-14 10:26:15 UT, with upper limit up to  13.9 mag. Observations started at twilight.  The observations began at zenith distance = 53 deg. The sun  altitude  is -9.5 deg. 

The galactic latitude b = 38 deg., longitude l = 110 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2204543

We obtain a following upper limits.  

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

   27322 | 2023-03-14 10:26:15 |         MASTER-Amur | (16h 07m 24.95s , +75d 14m 49.7s) |   C |    60 | 12.5 |        
   27401 | 2023-03-14 10:27:35 |         MASTER-Amur | (15h 37m 46.79s , +73d 22m 21.4s) |   C |    60 | 12.9 |        
   27482 | 2023-03-14 10:28:55 |         MASTER-Amur | (16h 05m 41.11s , +73d 21m 07.8s) |   C |    60 | 12.6 |        
   27569 | 2023-03-14 10:30:22 |         MASTER-Amur | (15h 34m 45.47s , +77d 09m 41.4s) |   C |    60 | 13.3 |        
   27648 | 2023-03-14 10:31:42 |         MASTER-Amur | (16h 10m 58.71s , +77d 11m 33.8s) |   C |    60 | 13.4 |        
   27728 | 2023-03-14 10:33:02 |         MASTER-Amur | (14h 36m 06.57s , +75d 13m 56.6s) |   C |    60 | 13.8 |        
   27807 | 2023-03-14 10:34:21 |         MASTER-Amur | (15h 07m 35.35s , +75d 14m 30.1s) |   C |    60 | 13.9 |        
   27887 | 2023-03-14 10:35:41 |         MASTER-Amur | (15h 40m 02.27s , +71d 27m 17.7s) |   C |    60 | 13.7 |        
   27967 | 2023-03-14 10:37:01 |         MASTER-Amur | (16h 05m 15.35s , +71d 29m 04.3s) |   C |    60 | 13.6 |        
Filter C is a clear (unfiltred) band. 


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