GCN Circular 42678

Subject
Fermi GRB 251114A: Global MASTER-Net observations report
Event
GRB 251114A
Date
2025-11-14T03:15:50Z (2 days ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, 
G.Antipov,  A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU),
O.Gress, N.Budnev (ISU),
C.Francile,  F. Podesta, R.Podesta, E. Gonzalez  (Observatorio Astronomico Felix Aguilar (OAFA),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
A.Sosnovskij (CrAO),
A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity),
D.Buckley (SAAO),
R.Rebolo (The Instituto de Astrofisica de Canarias),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,
A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) 

MASTER-OAFA robotic telescope  [1]  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 251114A ( Fermi GBM team, GCN 42676Loading...
 
 ) errorbox  101 sec after notice time and 138 sec after trigger time at 2025-11-14 01:15:30 UT, with upper limit up to  20.0 mag. The observations began at zenith distance = 60 deg. The sun  altitude  is -24.0 deg. 

The galactic latitude b = -22 deg., longitude l = 57 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=3041842

We obtain a following upper limits.  

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

     154 | 2025-11-14 01:15:30 |         MASTER-OAFA | (20h 55m 15.88s , +05d 45m 40.4s) |   C |    30 | 19.5 |        
     190 | 2025-11-14 01:16:06 |         MASTER-OAFA | (20h 55m 15.85s , +05d 45m 40.8s) |   C |    30 | 19.6 |        
     231 | 2025-11-14 01:16:41 |         MASTER-OAFA | (20h 55m 15.85s , +05d 45m 41.1s) |   C |    40 | 19.7 |        
     282 | 2025-11-14 01:17:28 |         MASTER-OAFA | (20h 55m 15.83s , +05d 45m 41.5s) |   C |    50 | 19.8 |        
     343 | 2025-11-14 01:18:24 |         MASTER-OAFA | (20h 55m 15.83s , +05d 45m 42.1s) |   C |    60 | 19.9 |        
     648 | 2025-11-14 01:22:59 |         MASTER-OAFA | (20h 52m 07.43s , +09d 10m 19.0s) |   C |   120 | 19.9 |        
     784 | 2025-11-14 01:25:05 |         MASTER-OAFA | (20h 52m 07.40s , +09d 10m 19.6s) |   C |   140 | 20.0 |        
     947 | 2025-11-14 01:27:33 |         MASTER-OAFA | (20h 52m 07.36s , +09d 10m 20.0s) |   C |   170 | 20.0 |        
    1068 | 2025-11-14 01:30:29 |         MASTER-OAFA | (20h 52m 07.34s , +09d 10m 20.1s) |   C |    60 | 19.6 |        
    1134 | 2025-11-14 01:31:35 |         MASTER-OAFA | (20h 52m 07.33s , +09d 10m 20.0s) |   C |    60 | 19.6 |        
    1200 | 2025-11-14 01:32:41 |         MASTER-OAFA | (20h 52m 07.32s , +09d 10m 20.4s) |   C |    60 | 19.5 |        
Filter C is a clear (unfiltred) band. 


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

[1] - V.M. Lipunov, V.G. Kornilov, E.S. Gorbovskoy, N.A. Tiurina & A.S.Kuznetsov, 2023,  Astronomical Robotic Networks and Operative Multichanel Astrophysics, Lomonosov MSU PRESS, 591pp.
http : // www.pereplet.ru/lipunov/625.html