TITLE:   GCN CIRCULAR
NUMBER:  37895
SUBJECT: Swift GRB241026.95: Global MASTER-Net observations report
DATE:    24/10/26 22:55:00 GMT
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, V.Senik,  D. Vlasenko,
G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij
(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. Gress, N.M. Budnev, O.Ershova
(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),

V. Yurkov, A. Gabovich
(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) was pointed to the Swift GRB241026.95 (trigger No 1262764,19h 33m 41.52s , +57d 58m 48.0s, R=0.05) errorbox  10 sec after notice time and 40 sec after trigger time at 2024-10-26 22:43:12 UT, with upper limit up to  16.7 mag. The observations began at zenith distance = 69 deg. The sun  altitude  is -51.7 deg. 

The galactic latitude b = 17 deg., longitude l = 90 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2650277

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      45 |   MASTER-Kislovodsk |  P- |    10 | 15.5 |        
      63 |   MASTER-Kislovodsk |  P- |    10 | 15.4 |        
      82 |   MASTER-Kislovodsk |  P- |    10 | 15.4 |        
     114 |   MASTER-Kislovodsk |  P- |    20 | 16.2 |        
     147 |   MASTER-Kislovodsk |  P- |    30 | 16.1 |        
     186 |   MASTER-Kislovodsk |  P- |    30 | 16.1 |        
     229 |   MASTER-Kislovodsk |  P- |    40 | 16.3 |        
     282 |   MASTER-Kislovodsk |  P- |    50 | 16.3 |        
     346 |   MASTER-Kislovodsk |  P- |    60 | 16.4 |        
     424 |   MASTER-Kislovodsk |  P- |    80 | 16.7 |        


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