TITLE:   GCN CIRCULAR
NUMBER:  11182
SUBJECT: GRB 100902A: MASTER Optical Early Limit
DATE:    10/09/02 20:22:25 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>

V.Krushinski, I.Zalozhnich, T.Kopytova, A. Popov
Ural State University, Kourovka

E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina,
D.Kuvshinov, P.Balanutsa, V.V.Chazov, P.V.Kortunov, A.Kuznetsov,
D.Zimnukhov, M. Kornilov
Sternberg Astronomical Institute, Moscow State University


K.Ivanov, O.Chuvalaev, V.Poleschuk, E.Konstantinov, V.Lenok, O.Gres,
S.Yazev, N.M.Budnev,
Irkutsk State University


A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik
Kislovodsk Solar Station of the Pulkovo Observatory


V.Yurkov, Yu.Sergienko, D.Varda, I.Kudelina
Blagoveschensk Educational State University, Blagoveschensk



MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru)
located at Ural (Kourovka)  was pointed to the
Swift GRB 100902A (Sakamoto et al., GCN Circ 11181) 27  sec  after 
Notice time (104 s after trigger time) in two polarizations.

Thre is no optical transient at XRT position (Sakamoto et al., GCN Circ 
1118) brighter 17 mag (exposition 20 s).

The message may be cited.

mailto: lipunov@sai.msu.ru