GCN Circular 17680
Subject
GRB 150403A: MASTER-net optical observation
Date
2015-04-06T17:24:35Z (9 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
E. Gorbovskoy, V. Lipunov, N.Tyurina, V.Kornilov,
P.Balanutsa, A.Kuznetsov, D.Kuvshinov,
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
V.Krushinski, I.Zalozhnih, A. Popov
Ural Federal University, Kourovka
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 SAAO was pointed to the GRB150403A (Lien et al. GCN 17665)
20418 sec after notice time and 20434 sec (5.7h) after trigger time at
2015-04-04 03:34:51 UT immediately after suitable weather condition came,
in automatic mode. Observation lasted about 30 minutes, until the weather
became bad again. We detect a faint OT on a Swift UVOT position (Kuin et al. GCN17673).
The estimated unfiltered magnitude is:
Date time_start T0-Tmid[s] Expt.[s] Mag Coadd
2015-04-04 03:34:51.49 20840 720 19.2 4
Our unfiltered band is well described by a parity 0.8R+0.2B (USNO B1).
The message may be cited.