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GCN Circular 19076

Subject
GRB 160225A: MASTER-Amur early observations
Date
2016-02-25T14:47:57Z (8 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
A.Gabovich, V.Yurkov, Yu.Sergienko, D.Varda
Blagoveschensk Educational State University, Blagoveschensk

E. Gorbovskoy, N.Tyurina, V. Lipunov, V.Kornilov, 
P.Balanutsa, A.Kuznetsov,  D.Kuvshinov
Lomonosov Moscow State University,
Sternberg Astronomical Institute, Moscow State University

D.Buckley, S. Potter, M.Kotze
South African Astronomical Observatory

K.Ivanov, N.M.Budnev, O.Gres, V.A.Poleshchuk
Irkutsk State University

A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory

R. Rebolo, M. Serra-Ricart, N. Lodieu, G. Israelian
The Instituto de Astrofisica de Canarias

MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
located in Blagoveschensk was pointed to the  GRB160225A 20 sec after 
notice time and 204 sec after Swift BAT trigger time at 2016-02-25 
14:24:20 UT (Siegel et al, 19075). On 
our first (40s exposure)  set we haven`t found optical transient  within 
SWIFT error-box (ra=10 56 58 dec=+53 39 17 r=0.050000).
The 5-sigma upper limit has been about 17.5 mag

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