[vsnet-grb-info 14091] GRB 131030A: MASTER optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15405
SUBJECT: GRB 131030A: MASTER  optical observation
DATE:    13/10/30 22:07:29 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc at observ.inetcomm.ru>

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

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

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

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

V. Krushinski, I. Zalozhnich,  A. Popov, A. Bourdanov
Ural Federal University

H. Levato and C. Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)

C. Mallamaci, C. Lopez and F. Podest
Observatorio Astronomico Felix Aguilar (OAFA)

MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru)
located in Kislovodsk was pointed to the  GRB131030A 50 min (3000s) after 
GRB time at 2013-10-30 21-46-10.273 UT.
On our first  (180 sec) images  we  found optical transient  within SWIFT 
error-box (E. Troja et. al GCN15402).
The unfiltred magnitude is 16.5;
The 5-sigma upper limit has been about 19.0 mag.
So long pointing time was due to with daily power cut on the observatory.
The message may be cited.