TITLE: GCN CIRCULAR NUMBER: 11401 SUBJECT: GRB 10112A: MASTER optical observations DATE: 10/11/13 16:18:37 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 Sternberg Astronomical Institute, Moscow State University V.Krushinski, I.Zalozhnich, T.Kopytova, 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 at Kislovodsk was pointed to the GRB101112A 21 sec s after notice time and 36 sec after GRB time at 2010-11-12 22:11:11.00 UT at very high zenit distance (~88 degrees). On our first (10s exposure) set we haven`t found optical transient within UNDEF error-box (ra=19 29 16 dec=+39 23 22 r=0.047500). The 5-sigma upper limit has been about 15.7 mag We have no found any OT at Liverpool OT position (Guidorzi et al., GCN Circ 11397). The message may be cited. mailto: lipunov@sai.msu.ru