GCN Circular 23476
Subject
GRB 181201A MASTER-Net OT continued observation
Date
2018-12-01T17:24:28Z (6 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
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 pointed to the GRB181201A (Mereghetti et
al., GCN #23469) ~13.3 hours after trigger time at 2018-12-01 15:57:35 UT.
On our first (180s exposure) set we found optical transient detected
by MASTER-OAFA (Podesta et al, GCN 23470; Gorbovskoy et al., Atel
#12255; also observed by Kong GCN #23475;).
T-Tmid Date Time Expt. Ra Dec Mag
---------|---------------------|-------|-----------------|-----------------|-------
47915s 2018-12-01 15:57:35 180 (21h 17m 11.11s , -12d 37m 50.9s) 17.6
The 5-sigma upper limit has been about 18.3 mag
The galactic latitude b = -39 deg., longitude l = 39 deg.
The observations made on zenit distance = 64 deg.The moon (32 % bright
part) below the horizon (The altitude of the Moon is -41 deg. ).
The sun altitude is -25.6 deg.
The object can be observed till sunrise at 2018-12-02 04:21:42 UT.
The message may be cited.