GCN Circular 2659
V. Lipunov, A.Krylov, V.Kornilov, G.Borisov, D.Kuvshinov, A.Belinski, M.Kuznetsov, S.Potanin, G.Antipov, E.Gorbovskoy, N.Tyurina Sternberg Astronomical Institute, Alexsandr Krylov Observatory, Moscow At 4-th sec After HETE alert 3510 (WXM data refined since S/C_Last Notic) MASTER robotic telescope (http://observ.pereplet.ru) had automatically imaging the corresponding area of the sky (01h 43m after trigger time). On the first image on 200 mm camera with 30 sec exposure optical unfiltred limit is equal about 16.2. On image (UT 18h06m33s) optical limit is about 17.0. The comparison between these images with the USNO-A2 catalog does not reveal any new source. We have 30 unfiltered images of the error box (30s exposition, 40 x 50 arcmin) and 30 unfiltered images of the error box (60s exposition, 40 x 50 arcmin). The optical limit on sum of 30 fits (1 minute exposure) is about 19.5. FITS image are available at http://observ.pereplet.ru/images/GRB040825/ This message may be cited.