TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2986 SUBJECT: GRB050126: MASTER optical observations DATE: 05/01/26 16:58:33 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs 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, Moscow 2,8 hours after SWIFT alert (GCN 2984) MASTER robotic telescope (http://observ.pereplet.ru) had imaging the corresponding area of the sky under the bad weather conditions on the evening sky. We have about 15 unfiltered images of the error box (45s exposition, 6 square degrees field) started at 26 Jan 2005 14:49:18 UT (2,8 hours after GRB time). The better limiting magnitude on the images was about 15.5 (close to R-band). There is no OT within the 1' SWIFT error circle on 3 sigma level. On the some of the images (around 15h 18m UT) we see (in the 1' SWIFT error circle) very close to noise one object with coordinates 18 32 28.5 +42 21 47 (error = +-4'') The optical limit on summ - 16.5. JPG-images are available at http://observ.pereplet.ru/images/050126/ This message may be cited. This work is supported by Moscow Union "OPTICA" and RFFI 04-02-16411. Mailto: lipunov@sai.msu.ru