[vsnet-grb-info 25595] Swift GRB200506.73: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  27695
SUBJECT: Swift GRB200506.73: Global MASTER-Net observations report 
DATE:    20/05/06 17:46:13 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at 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-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) was pointed to the Swift GRB200506.73 (trigger No 969823,18h 17m 59.52s , -16d 09m 07.2s, R=0.05) errorbox  14 sec after notice time and 29 sec after trigger time at 2020-05-06 17:37:19 UT, with upper limit up to  14.1 mag. The observations began at zenith distance = 68 deg. The sun  altitude  is -17.4 deg. 

The galactic latitude b = -1 deg., longitude l = 15 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1351465

We obtain a following upper limits.  

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

      34 |         MASTER-Amur |  P/ |    10 | 13.1 |        
      58 |         MASTER-Amur |  P/ |    10 | 13.1 |        
      90 |         MASTER-Amur |  P/ |    20 | 13.5 |        
     123 |         MASTER-Amur |  P/ |    20 | 13.5 |        
     162 |         MASTER-Amur |  P/ |    30 | 13.8 |        
     210 |         MASTER-Amur |  P/ |    40 | 13.8 |        
     266 |         MASTER-Amur |  P/ |    50 | 14.1 |        


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