TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5032 SUBJECT: GRB 060427B: MASTER optical observations DATE: 06/04/28 21:15:36 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, V.Kornilov, N.Tyurina, A.Belinski, D.Kuvshinov, E.Gorbovskoy, A.Krylov, N.Shatskiy, G.Borisov, A.Sankovich, V.Vladimirov, P.Gritsyk, S.Korobkin Sternberg Astronomical Institute, Moscow Union 'Optic' MASTER robotic system (http://observ.pereplet.ru) observed GRB060427B error box (GRB_TIME is 2006-04-27 23:51:55 UT, IPN triangulation, S. Golenetskii et al. GCN5030) in survey mode at considerable zenit distances. The weather was good. We start at 28 apr 2006 18:27:10.44 (18.5 h after the GRB time) and now we have more than 20 images (each 6 square degrees) of the large error box. We note that the error box is very close to galactic plane and we have a lot of objects. The reduction is continued. MASTER team thanks to Konus team for collaboration. This work is supported by RFFI 04-02-16411 grant. This message can be cited. Mailto: lipunov@sai.msu.ru