TITLE: GCN CIRCULAR NUMBER: 7129 SUBJECT: GRB 071122: MASTER optical observation DATE: 07/11/22 18:55:13 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, V.Kornilov, D.Kuvshinov, N.Tyurina, A.Belinski, E.Gorbovskoy, A.Krylov, N.Shatskiy, A.Sankovich, G.Borisov, V.Vladimirov, P.Gritsyk, V.Vibornov, A.Kuznetsov Sternberg Astronomical Institute, Moscow Union 'Optic' A. Tlatov, I.Golubov Kislovodsk Solar Station of the Pulkovo observatory Krushinski V., I.Zalozhnih Ural State University MASTER robotic system (http://observ.pereplet.ru) responded to GRB 071122.1 (GRB_TIME is 2007-11-22 01:23:25.62, M. Stamatikos et al., GCN Circ N 7121). The first image was at 2007-11-22 01:25:57 UT, 69 s after the GCN notice time and 151 s after the GRB time. These observations were affected by proximity to the full moon. The unfiltered image is calibrated relative to USNO A2.0 (0.8 R + 0.2 B). The robot not find OT-candidate in error box brighter then 15.6 (s/n=10). Individual images have limiting magnitudes about 16. We set the following specific limits for S. B. Cenko (GCN Circ 7125) OT position. start UT t_start-t_GRB mean t_GRB t_exp(s) mlim Coadd? -------------------------------------------------------------------- 01:25:57.6 151 s 166 s 30 16.0 N 01:25:57.6 151 s 266 s 5x30 16.8 Y 01:30:06.6 6 min 42 s 14 min 53 s 20x30 17.7 Y 01:34:15.9 11 min 00 s 15 min 02 s 10x30 17.2 Y 01:42:40.3 19 min 15 s 23 min 15 s 10x30 17.2 Y 01:50:59.5 27 min 35 s 31 min 38 s 10x30 17.2 Y The reduction is continuing. The delay of the given telegram is connected with participation and successful end of national Russia football teem on a selection cycle EURO' 08. Our collective is especially grateful to national Croatia-teem for the help during the difficult moment! The reduction is continuing. This message can be cited. Mailto: lipunov@sai.msu.ru