GCN Circular 17622

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

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

V.Krushinsky, I.Zalozhnih,  A. Popov
Ural Federal University, Yekaterinburg, Kourovka

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

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

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)

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



MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
located in Tunka was pointed to the  GRB150323C 42 sec after notice time 
and 88 sec after trigger time at 2015-03-23 17:09:39 UT in two 
polarizations. On our first (20s exposure)  set we haven`t found optical 
transient  within SWIFT error-box (Amaral-Rogers et al. GCN17621
Not found
 
 
).
The 5-sigma upper limit has been about 17.6 mag


MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
located in Ural was pointed to the  GRB150323C 35 after notice time and 79 
sec after trigger time at 2015-03-23 17:09:31 UT  in two polarizations. On 
our first (20s exposure)  set we haven`t found optical transient  within 
SWIFT error-box (ra=12 50 28 dec=+50 11 25 r=0.001400).
The 5-sigma upper limit has been about 17.9 mag


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