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GCN Circular 27080

Subject
Swift GRB200215.61: Global MASTER-Net observations report
Date
2020-02-15T15:16:16Z (5 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),

H.Levato 
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),

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-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the Swift GRB200215.61 (trigger No 956639,02h 16m 29.28s , +12d 46m 51.6s, R=0.05) errorbox  20 sec after notice time and 40 sec after trigger time at 2020-02-15 14:40:12 UT, with upper limit up to  18.5 mag. The observations began at zenith distance = 70 deg. The sun  altitude  is -39.9 deg. 

The galactic latitude b = -45 deg., longitude l = 154 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1288551

We obtain a following upper limits.  

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

      46 |        MASTER-Tunka |  P| |    10 | 15.3 |        
      75 |        MASTER-Tunka |  P| |    10 | 15.2 |        
     110 |        MASTER-Tunka |  P| |    20 | 15.5 |        
     160 |        MASTER-Tunka |  P| |    30 | 16.1 |        
     215 |        MASTER-Tunka |  P| |    40 | 16.0 |        
     279 |        MASTER-Tunka |  P| |    50 | 16.4 |        
     354 |        MASTER-Tunka |  P| |    60 | 16.6 |        
     443 |        MASTER-Tunka |  P| |    80 | 16.7 |        
     553 |        MASTER-Tunka |  P| |   100 | 16.7 |        
     682 |        MASTER-Tunka |  P| |   120 | 16.8 |        
     837 |        MASTER-Tunka |  P| |   150 | 16.9 |        
    1021 |        MASTER-Tunka |  P| |   180 | 17.1 |        
    1221 |        MASTER-Tunka |  P| |   180 | 17.0 |        
    1420 |        MASTER-Tunka |  P| |   180 | 16.9 |        
    1761 |        MASTER-Tunka |   C |   180 | 18.5 |        
Filter C is a clear (unfiltred) band. 


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