GCN Circular 42878

Subject
SVOM GRB251129.11: Global MASTER-Net observations report
Event
GRB 251129.11
Date
2025-11-29T03:14:31Z (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-Kislovodsk robotic telescope  [1]  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the SVOM GRB251129.11 (trigger No 1764383485,14h 58m 09.12s , +79d 25m 43.3s, R=0.1493) errorbox  9 sec after notice time and 997 sec after trigger time at 2025-11-29 02:48:01 UT, with upper limit up to  18.9 mag. Observations started at twilight.  The observations began at zenith distance = 45 deg. The sun  altitude  is -16.3 deg. 

The galactic latitude b = 36 deg., longitude l = 116 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=3054567

We obtain a following upper limits.  

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

    1057 | 2025-11-29 02:48:01 |   MASTER-Kislovodsk | (14h 59m 33.58s , +79d 37m 30.3s) |   C |   120 | 18.3 |        
    1177 | 2025-11-29 02:48:01 |   MASTER-Kislovodsk | (14h 59m 33.58s , +79d 37m 30.3s) |   C |   360 | 18.9 |  Coadd 
    1057 | 2025-11-29 02:48:01 |   MASTER-Kislovodsk | (15h 21m 37.07s , +79d 09m 16.3s) |   C |   120 | 18.4 |        
    1197 | 2025-11-29 02:50:21 |   MASTER-Kislovodsk | (14h 59m 33.13s , +79d 37m 36.2s) |   C |   120 | 18.0 |        
    1197 | 2025-11-29 02:50:21 |   MASTER-Kislovodsk | (15h 21m 37.81s , +79d 09m 22.5s) |   C |   120 | 18.2 |        
    1337 | 2025-11-29 02:52:41 |   MASTER-Kislovodsk | (14h 59m 32.62s , +79d 37m 42.8s) |   C |   120 | 18.0 |        
    1337 | 2025-11-29 02:52:41 |   MASTER-Kislovodsk | (15h 21m 38.00s , +79d 09m 30.4s) |   C |   120 | 18.0 |        
    1487 | 2025-11-29 02:55:11 |   MASTER-Kislovodsk | (14h 59m 32.17s , +79d 37m 50.0s) |   C |   120 | 17.8 |        
    1607 | 2025-11-29 02:55:11 |   MASTER-Kislovodsk | (14h 59m 32.18s , +79d 37m 50.0s) |   C |   360 | 18.3 |  Coadd 
    1487 | 2025-11-29 02:55:11 |   MASTER-Kislovodsk | (15h 21m 37.94s , +79d 09m 39.5s) |   C |   120 | 18.0 |        
    1627 | 2025-11-29 02:57:31 |   MASTER-Kislovodsk | (14h 59m 31.42s , +79d 37m 57.4s) |   C |   120 | 17.6 |        
    1627 | 2025-11-29 02:57:31 |   MASTER-Kislovodsk | (15h 21m 37.84s , +79d 09m 49.2s) |   C |   120 | 17.7 |        
    1766 | 2025-11-29 02:59:50 |   MASTER-Kislovodsk | (14h 59m 30.65s , +79d 38m 04.2s) |   C |   120 | 17.5 |        
    1766 | 2025-11-29 02:59:50 |   MASTER-Kislovodsk | (15h 21m 37.58s , +79d 09m 57.9s) |   C |   120 | 17.8 |        
    1906 | 2025-11-29 03:02:10 |   MASTER-Kislovodsk | (14h 59m 29.69s , +79d 38m 11.3s) |   C |   120 | 17.6 |        
    1906 | 2025-11-29 03:02:10 |   MASTER-Kislovodsk | (15h 21m 37.28s , +79d 10m 06.9s) |   C |   120 | 17.9 |        
    2046 | 2025-11-29 03:04:31 |   MASTER-Kislovodsk | (14h 59m 28.84s , +79d 38m 19.5s) |   C |   120 | 17.7 |        
    2046 | 2025-11-29 03:04:31 |   MASTER-Kislovodsk | (15h 21m 37.01s , +79d 10m 17.3s) |   C |   120 | 17.9 |        
    2186 | 2025-11-29 03:06:50 |   MASTER-Kislovodsk | (14h 59m 27.87s , +79d 38m 27.5s) |   C |   120 | 17.7 |        
    2186 | 2025-11-29 03:06:50 |   MASTER-Kislovodsk | (15h 21m 36.63s , +79d 10m 27.4s) |   C |   120 | 17.9 |        
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