TITLE: GCN CIRCULAR NUMBER: 15692 SUBJECT: GRB 140105A/Fermi410578384: MASTER-Net early optical observations DATE: 14/01/06 14:46:32 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, D.Denisenko, V.Kornilov, D.Kuvshinov, N.Tyurina, P.Balanutsa, A.Kuznetsov Sternberg Astronomical Institute, Moscow State University 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 GRB140105.06 60 sec after notice time and 21 sec after trigger time at 2014-01-05 01:32:39.028 UT. On our first (10s exposure) set we haven`t found optical transient within our FOW error-box (ra=13 43 08 dec=+52 55 47) . The 5-sigma upper limit has been about 16.8 mag. We have one possible OT candidate iPTF14ae (Singer, Kasliwal and Cenko, GCN 15686) inside our FOV. But we do not see any OT at this place brighter than 16.8 unfiltered magnitude. We have Very Wide Field camera images at this direction (FOV=2x400 square degrees). We have a part of the Error Box at synchronous images (Shaolin Xiong and Valerie Connaughton, GCN 15688). The reduction is being continued. The message may be cited.