[vsnet-grb-info 17116] GRB 150922A: MASTER-Ural observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  18437
SUBJECT: GRB 150922A: MASTER-Ural observations
DATE:    15/10/22 14:32:11 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

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

V. Lipunov, E. Gorbovskoy,   N.Tyurina, V.Kornilov, P.Balanutsa,
A.Kuznetsov, D.Kuvshinov, D. Vlasenko, E.Popova
Lomonosov Moscow State University, Sternberg Astronomical Institute

D.Buckley, S. Potter, A.Kniazev, M.Kotze
South African Astronomical Observatory

K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk
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, E.Sinyakov
Blagoveschensk Educational State University, Blagoveschensk


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 Ural was pointed to the  GRB151022A  16 after notice time and 
76 sec after trigger time at 2015-10-22 14:07:48 UT in two polarizations. 
On our first (20s exposure)  set we haven`t found optical transient 
within SWIFT error-box (ra=23 16 51 dec=+55 48 47 r=0.05).
The 5-sigma upper limit has been about 16.0 mag
The reduction is continued.
The message may be cited.