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GCN Circular 15948

Subject
GRB 140311B: MASTER early optical observations
Date
2014-03-11T22:02:51Z (10 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <gcncirc@observ.inetcomm.ru>
E. Gorbovskoy, V. Lipunov, M. Pruzhinskaya, D.Denisenko, V.Kornilov, 
N.Tyurina,
P.Balanutsa, A.Kuznetsov, V.V.Chazov, D.Kuvshinov
Lomonosov Moscow State University, Sternberg Astronomical Institute

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

V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov
Blagoveschensk Educational State University, Blagoveschensk

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

V.Krushinski, I.Zalozhnih,  A. Popov
Ural Federal University, Kourovka

Hugo Levato and Carlos Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)

Claudio Mallamaci, Carlos Lopez and Federico Podest
Observatorio Astronomico Felix Aguilar (OAFA)

MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
located in Tunka was pointed to the  GRB140311B 29 sec after notice time 
and 107 sec after trigger time at 2014-03-11 21:16:16 UT in two 
polarizations. On our first (20s exposure) set we haven`t found optical 
transient  within SWIFT error-box (Racusin et. al. GCN 15945). The 5-sigma 
upper limit has been about 17.0 mag. The observations is proceed.

MASTER II  robotic telescope located in Blagoveschensk was pointed to the 
GRB140311B 9 sec after notice time and 85 sec after trigger time at 
2014-03-11 21:15:54 UT in two polarizations. On our first (20s exposure) 
set we haven`t found optical transient  within SWIFT error-box.
The 5-sigma upper limit has been about 14.0 mag. The observations on this 
place made on the bright morning sky.

The message may be cited.

[GCN OPS NOTE(12mar14): Per author's request, the Subject was changed
from "MASTER OT light curve (fwd)" to "MASTER early optical observations".]
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