[vsnet-grb-info 25417] Swift GRB200410.10: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  27517
SUBJECT: Swift GRB200410.10: Global MASTER-Net observations report 
DATE:    20/04/10 02:40:18 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-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 Swift GRB200410.10 (trigger No 965638,19h 58m 32.88s , +51d 45m 46.8s, R=0.05) errorbox  16 sec after notice time and 55 sec after trigger time at 2020-04-10 02:26:05 UT, with upper limit up to  16.1 mag. Observations started at twilight.  The observations began at zenith distance = 23 deg. The sun  altitude  is -8.2 deg. 

The galactic latitude b = 11 deg., longitude l = 86 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1333659

We obtain a following upper limits.  

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

      60 |      MASTER-Tavrida |   C |    10 | 15.5 |        
      80 |      MASTER-Tavrida |   C |    50 | 16.1 |  Coadd 
      96 |      MASTER-Tavrida |   C |    20 | 15.7 |        
     136 |      MASTER-Tavrida |   C |    20 | 15.5 |        
     181 |      MASTER-Tavrida |   C |    30 | 15.4 |        
Filter C is a clear (unfiltred) band. 


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