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GCN Circular 34154

Subject
Integral GRB230706.70: Global MASTER-Net observations report
Date
2023-07-06T20:57:32Z (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-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the Integral GRB230706.70 (trigger No 10311,02h 43m 43.74s , +61d 25m 28.0s, R=0.0521667) errorbox  13108 sec after notice time and 13120 sec after trigger time at 2023-07-06 20:31:19 UT, with upper limit up to  17.9 mag. The observations began at zenith distance = 68 deg. The sun  altitude  is -21.1 deg. 

The galactic latitude b =  2 deg., longitude l = 136 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2234345

We obtain a following upper limits.  

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

   13211 |      MASTER-Tavrida |   C |   180 | 17.8 |        
   13399 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   13588 |      MASTER-Tavrida |   C |   180 | 17.7 |        
   13776 |      MASTER-Tavrida |   C |   180 | 17.5 |        
   13964 |      MASTER-Tavrida |   C |   180 | 17.5 |        
   14153 |      MASTER-Tavrida |   C |   180 | 17.4 |        
   14341 |      MASTER-Tavrida |   C |   180 | 17.4 |        
Filter C is a clear (unfiltred) band. 


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