TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4171 SUBJECT: GRB051028:MASTER optical observations DATE: 05/10/28 18:21:57 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, V.Kornilov, D.Kuvshinov, N.Tyurina, A.Belinski, E.Gorbovskoy, A.Krylov, G.Borisov, A.Sankovich, V.Vladimirov Sternberg Astronomical Institute, Moscow Union 'Optic' MASTER robotic system (http://observ.pereplet.ru) responded to HETE GRB051028.6 . An automated response took first image 2005-10-28 16:59:56 UT, 03h 23 m after the GRB time. The unfiltered image is calibrateds relative to USNO A2.0 (0.8 R + 0.2 B). Reduction is continued. The robot not find OT-candidate in error box brighter then 17.0. This work is supported by RFFI 04-02-16411 grant. This message can be cited. Mailto: lipunov@sai.msu.ru