[vsnet-grb-info 13870] GRB 130907A: MASTER early OT observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15184
SUBJECT: GRB 130907A: MASTER early OT observations
DATE:    13/09/07 22:14:19 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc at observ.inetcomm.ru>

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

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

V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov
Blagoveschensk Educational State University, Blagoveschensk

K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk
Irkutsk State University

V.Krushinski, I.Zalozhnih,  A. Popov
Ural Federal University, Kourovka

Hugo Levato and Carlos Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)

Claudio Mallamaci, Carlos Lopez and Federico Podest
Observatorio Astronomico Felix Aguilar (OAFA)


MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
located in Kislovodsk was pointed to the  GRB130907A 18 sec  after notice 
time and 43 sec after GRB time at 2013-09-07  21:42:00 UT in two 
polarizations. On our first images we  found optical transient  within 
SWIFT error-box (Page et. al. GCN15183). The object approximate magnitude 
is about 15.0 mag.
Observations are made at very long zenith distance z=86 deg.

The observations and reduction is continued.
The message may be cited.