TITLE: GCN CIRCULAR NUMBER: 10965 SUBJECT: GRB 100718A: MASTER-Net optical prompt and alert observations DATE: 10/07/19 18:51:05 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 A. Tlatov, A.V. Parhomenko, D. Dormidontov Kislovodsk Solar Station of the Pulkovo Observatory V.Yurkov, Yu.Sergienko, D.Varda, I.Kudelina Blagoveschensk Educational State University, Blagoveschensk V.Krushinski, I.Zalozhnich, T.Kopytova, A. Popov Ural State University, Kourovka K.Ivanov, S.Yazev, N.M.Budnev, E.Konstantinov, V.Lenok, O.Gres, O.Chuvalaev Irkutsk State University Four MASTER robotic systems (MASTER-Net: http://observ.pereplet.ru, 6 Very Wide Field cameras and 3 Wide Field Telescopes ) located near Kislovodsk and Tunka (near Baykal Lake) was pointed to the GRB 100718A (Fermi trigger Number 301172784). Initially all Very Wide Field Cameras are closed to Fermi GBM error box. So we have next table of the observations: ------------------------------------------------------------------------- t-t_GRB r.a. dec FOW* m_lim Exp Coadd Camera Where (s) (center FOW) (degrees) s (number)(Diam.mm) 0 269.6 22.6 18x24 14 25 25 61 Kislo 0 251.9 23.0 18x24 14 25 25 61 Kislo 0 270.4 20.9 18x24 14 25 5 61 Kislo 0 276.0 22.7 18x24 14 25 5 61 Kislo 0 259.5 24.1 18x24 14 25 5 61 Kislo 0 253.5 22.7 18x24 14 25 5 61 Kislo 0 324.1 11.6 40x24 11 25 25 35 Tunka 47 311.6 15.6 18x24 14 25 5 61 Kislo 47 295.3 16.9 18x24 14 25 5 61 Kislo 49 278.1 36.2 18x24 14 25 25 61 Kislo 49 298.4 36.7 18x24 14 25 25 61 Kislo 79 292.1 38.1 2x2 17.1 20 1 400 Kislo 51 290.4 38.6 40x24 11.2 25 25 35 Tunka ------------------------------------------------------------------------ * FOV axb, a - along r.a. The weather was not very good at both sites. We wait the more accurate error box. The map of observations are available at http://observ.pereplet.ru/images/GRB100718A/ The message may be cited. mailto: lipunov@sai.msu.ru