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GCN Circular 11216

Subject
GRB 100905A: MASTER Prompt Optical Observations
Date
2010-09-05T17:43:04Z (14 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <gcncirc@observ.inetcomm.ru>
K.Ivanov, O.Chuvalaev, V.Poleschuk, E.Konstantinov, V.Lenok, O.Gres, 
S.Yazev, N.M.Budnev,
Irkutsk State University

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

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

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 Tunka   was pointed to the Swift GRB 100905A (Marshall et al. 
GCN Circ. 11214) 33  sec  after Notice time (55 s after GRB trigger time) 
in two polarizations bands.

There is no optical transient at XRT position (Marshall et al.
GCN Circ. 11214).
Following data has been received:

start UT       end UT      t_exp(s)   mlim   t_start-tGRB(s)  Coadd? Band
--------------------------------------------------------------------------
15:09:10       15:09:20     10        16.5       55.0          N  Polariz
15:09:39       19:09:59     20        17.1       84.0          N  Polariz
15:10:45       15:11:15     30        17.3      150.0          N  Polariz
15:11:35       15:12:15     40        17.5      200.0          N  Polariz
--------------------------------------------------------------------------

The observations and data reductions is continued.

The message may be cited.
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