GCN Circular 23330

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

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

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

V. Yurkov, A. Gabovich, Yu. Sergienko
Blagoveschensk Educational State University, Blagoveschensk

R. Podesta, Carlos Lopez and F. Podesta
Observatorio Astronomico Felix Aguilar (OAFA)

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

R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias

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


MASTER-Kislovodsk robotic telescope (MASTER-Net: 
http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, 
vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station 
of Pulkovo observatory) was starting survey on the IPN  GRB181011.15 
error-box (K. Hurley et al GCN 23328
Not found
 
 
)  33218 sec after notice time and 
61888 sec after trigger time at 2018-10-11 20:47:47 UT. The 5-sigma upper 
limit on our images is about 19 mag.


MASTER-Tavrida robotic telescope  located in 
Russia (Lomonosov MSU, SAI Crimea astronomical station) was starting 
survey on the IPN  GRB181011.15 error-box  45716 sec after notice time and 
74386 sec after trigger time at 2018-10-12 00:16:05 UT. The 5-sigma upper 
limit on our images is about 19 mag.

MASTER-Net cover full IPN (K. Hurley et al. GCN 23328
Not found
 
 
) and MAXI (Kawakubo 
et al. GCN 23327
Not found
 
 
)  error boxes.

Coverage map is available here:
http://master.sai.msu.ru/static//IPN/db/GRB181011.15/img/ligo_master_2018-10-12-05-03-00.eb.zoom.1.pngmlimit.png