TITLE: GCN CIRCULAR NUMBER: 14142 SUBJECT: GRB 130122A: MASTER-Net early marginal detection of the OT DATE: 13/01/23 13:47:18 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, D.Denisenko, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, A.Kuznetsov, V.V.Chazov Lomonosov Moscow State University, Sternberg Astronomical Institute A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University V.Krushinski, I.Zalozhnih, A. Popov Ural Federal University, Kourovka Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE) Claudio Mallamaci, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA) MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Kislovodsk was pointed to the GRB130122A 28 sec s after notice time and 91 sec after GRB time at 2013-01-22 23:45:40 UT in two polarizations. The weather conditions were not very good and continuosly deteriorated. On our first (20s exposure) double set we marginally find an optical transient at the Swift UVOT position (Lien et al., GCN 14140) with unfiltered magnitude 16.8+-0.3 (m = 0.8R + 0.2B from USNO-B). This message may be cited.