GCN Circular 23444
Subject
GRB 181123B: Global MASTER Net optical inspection
Date
2018-11-24T15:49:54Z (5 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina,
P.Balanutsa,A.Kuznetsov, V.V.Chazov, D. Vlasenko
Lomonosov Moscow State University, Sternberg Astronomical Institute
R. Podesta, F. Podesta, C. Lopez, C.Francile
Observatorio Astronomico Felix Aguilar (OAFA)
Hugo Levato 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,
South African Astronomical Observatory
A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory
O. Gres, N.M. Budnev, Yu.Ishmuhametova
Applied Physics Institute of Irkutsk State University
V. Yurkov, A. Gabovich, Yu. Sergienko
Blagoveschensk Educational State University, Blagoveschensk
MASTER-OAFA robotic telescope (MASTER-Net: http://observ.pereplet.ru,
Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in
Argentina (OAFA observatory of San Juan National University) was pointed
to the GRB181123B (Lien et al.,GCN 23432) at 2018-11-23
08:15:00 UT. On our 4-th (180s exposure) set we not found optical
transient within Swift error-box (ra=184.367 dec=14.5975 r=0.05) brighter
than 17.0.
The galactic latitude b = -60 deg., longitude l = 98 deg.
The observations made on zenit distance = 32 deg.The moon ( 1 % bright
part) below the horizon (The altitude of the Moon is -44 deg. ).
The sun altitude is -50.0 deg.
The object can be observed till 2018-10-10 09:24:14
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 pointed to the GRB181123B (Lien et al.,
GCN 23432) 63194 sec after
notice time and 63194 sec after trigger time at 2018-11-23 23:06:17 UT. On
our 10-th (180s exposure) set , obtained 72767 sec after tigger time at
2018-11-24 01:45:51 UT, we not found optical transient within Swift
error-box (ra=184.367 dec=14.5975 r=0.05) brighter than 18.1.
The galactic latitude b = 75 deg., longitude l = 272 deg.
The observations made on zenit distance = 53 deg.The moon (99 % bright
part) is 34 deg. above the horizon. The distance between moon and object
is 106
The sun altitude is -26.2 deg.
The object can be observed till sunrise at 2018-11-24 04:14:26