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GCN Circular 12917

GRB 120202A: MASTER early optical observations
2012-02-06T16:13:53Z (12 years ago)
Vladimir Lipunov at Moscow State U/Krylov Obs <>
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik
Kislovodsk Solar Station of the Pulkovo Observatory

E. Gorbovskoy, V. Lipunov,  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

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

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

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

MASTER II  robotic telescope (MASTER-Net: 
located in Kislovodsk was pointed to the INTEGRAL GRB120202A  (Mereghetti 
et al.,  GCN Circ No 12909) 73 sec s after 
notice time and 81 sec after GRB time at 2012-02-02 21:41:38.354 UT. On 
our first (20s exposure) set we haven`t found optical transient  within 
INTEGRAL error-box. Some delay was due to non format socket alert.
The 5-sigma upper limit has been about 18.0 mag
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