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GCN Circular 30930

Subject
Swift GRB211010.45: Global MASTER-Net observations report
Date
2021-10-10T17:42:09Z (3 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, 
V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,
D.Kuvshinov,  D. Cheryasov
(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, O.Ershova 
(Irkutsk State University, API),

A. Tlatov, D. Dormidontov 
(Kislovodsk Solar Station of the Pulkovo Observatory),

V. Yurkov, A. Gabovich, Yu. Sergienko 
(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 GRB211010.45 (trigger No 1078701,19h 08m 19.20s , +29d 49m 19.2s, R=0.05) errorbox  16730 sec after notice time and 16773 sec after trigger time at 2021-10-10 15:22:09 UT, with upper limit up to  18.8 mag. Observations started at twilight.  The observations began at zenith distance = 14 deg. The sun  altitude  is -9.1 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the Swift GRB211010.45 errorbox  18827 sec after notice time and 18871 sec after trigger time at 2021-10-10 15:57:06 UT, with upper limit up to  18.9 mag. Observations started at twilight.  The observations began at zenith distance = 15 deg. The sun  altitude  is -9.6 deg. 

The galactic latitude b =  9 deg., longitude l = 62 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1747849

We obtain a following upper limits.  

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

   16864 |   MASTER-Kislovodsk |   C |   180 | 15.0 |        
   16864 |   MASTER-Kislovodsk |   C |   180 | 17.5 |        
   18961 |      MASTER-Tavrida |   C |   180 | 16.7 |        
   19625 |   MASTER-Kislovodsk |   C |   180 | 18.4 |        
   19625 |   MASTER-Kislovodsk |   C |   180 | 18.6 |        
   20772 |      MASTER-Tavrida |   C |   180 | 18.9 |        
   21614 |   MASTER-Kislovodsk |   C |   180 | 18.5 |        
   21614 |   MASTER-Kislovodsk |   C |   180 | 18.8 |        
   21830 |      MASTER-Tavrida |   C |   180 | 18.7 |        
   22200 |      MASTER-Tavrida |   C |   180 | 18.6 |        
   22646 |      MASTER-Tavrida |   C |   180 | 18.6 |        
Filter C is a clear (unfiltred) band. 


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