TITLE:   GCN CIRCULAR
NUMBER:  12902
SUBJECT: GRB 120127A: MASTER optical observations
DATE:    12/01/27 15:38:06 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>

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

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



  MASTER II  robotic double telescope (FOW=2x4 square degrees, 
http://observ.pereplet.ru) located 
in Tunka was pointed to the  GRB120127A (MAXI/GSC, Song et al., GCN Circ 
12901) 9h 30 min after GRB time at 2012-01-27 04:21:52 UT  in two polarizations. 
On our  images we haven`t found optical transient
within error-box (Song et al., GCN Circ 12901).
The delay is due to the MAXI/GSC ground reduction.

    Date       UT         UT           Exp     Coadd      Limit
             Start     Mean Time
2012-01-27 13:51:59   13:53:29      180s       no         18.9
2012-01-27 13:51:59   13:58:40      900s       yes        19.9




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