[vsnet-grb-info 11446] GRB 120118B: MASTER optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  12853
SUBJECT: GRB 120118B: MASTER optical observations
DATE:    12/01/18 19:39:46 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc at observ.inetcomm.ru>

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


V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, 
N.Shatskiy, P.Balanutsa, V.V.Chazov,  A.Kuznetsov,
D.Zimnukhov, M. Kornilov, A.Kuznetsov, D.Zimnukhov, M. Kornilov,
A.Sankovich, S. Shurpakov
Moscow State University,  Sternberg Astronomical Institute


  V.Krushinski, I.Zalozhnich, A. Popov
Ural State University, Kourovka

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

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



  MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
located in Tunka was pointed to the  GRB120118A (Littlejohns et al., 
GCN Circ 12852) 1417  s after notice time 
and 1437 sec after GRB time at 2012-01-18 17:24:53  UT in two 
polarizations. On our first (120s exposure) set we haven`t found optical 
transient  within SWIFT error-box .
The delay is due to weather conditions.
  The 5-sigma upper limit has been about 17.0  mag

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