TITLE: GCN CIRCULAR NUMBER: 11558 SUBJECT: GRB 110112A: MASTER optical observations DATE: 11/01/12 18:20:16 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina, D.Kuvshinov, P.Balanutsa, V.V.Chazov, P.V.Kortunov, A.Kuznetsov, D.Zimnukhov, M. Kornilov, V.Shumkov, S.Shurpakov Sternberg Astronomical Institute, Moscow State University V.Krushinski, I.Zalozhnich, A. Popov Ural State University, Kourovka K.Ivanov, O.Chuvalaev, V.Poleschuk, E.Konstantinov, V.Lenok, O.Gres, S.Yazev, N.M.Budnev, Irkutsk State University A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory V.Yurkov, Yu.Sergienko, D.Varda, I.Kudelina Blagoveschensk Educational State University, Blagoveschensk MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Kislovodsk was pointed to the GRB110112.18 48131 sec s after notice time and 48156 sec after GRB time at 2011-01-12 17:34:54.665 UT. On our first (180s exposure) set we haven`t found optical transient within SWIFT error-box (ra=21 59 45 dec=+26 29 24 r=0.050000). The 5-sigma upper limit has been about 18.3 mag (V) and 19.0 (R). The message generated automaticaly. cited. mailto: lipunov@sai.msu.ru