TITLE: GCN CIRCULAR NUMBER: 12907 SUBJECT: GRB 120129A: MASTER optical observations DATE: 12/01/31 14:59:21 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs 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 observed the GRB120129A (S. Golenetskii et al., GCN Circ 12904) IPN triangulation error-box using 9 diffent fields. Observations proceeded since 2012-01-30 20:50 to 2012-01-30 22:50 i.e aprox. 1.3 days after grbtime. On our images we haven`t found an optical transient within IPN error-box (S. Golenetskii et al., GCN Circ 12904). Unfiltred upper limit is 18.5 on each image. There is a one strange OT MASTER022229.64+523924.9 which seen only at one image. Date time Ra Dec Mag 2012-01-30 22:50:52.423 02h 22m 29.64s , +52d 39m 24s.9 15.37 The object is not seen on images given after (10 hours) and before (1 hour) detection time. A preview of this object available here http://master.sai.msu.ru/static/OTMASTER022229_523924.png Our very wide fiels cameras (FOW=2x420 square degrees) synchronously with GRB have covered area directly under the errors-box. A coverage map available here http://master.sai.msu.ru/static/GRB120129A_MASTER_Cover.png The message may be cited.