GCN Circular 22886
Subject
GRB 180704A: MASTER optical observation
Date
2018-07-04T06:33:15Z (6 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tiurina, A.Kuznetsov, V.Chazov,
I. Gorbunov, D. Vlasenko, D.Zimnukhov, D.Kuvshinov, P.Balanutsa, V.Vladimirov
Lomonosov Moscow State University,SAI
R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias (IAC)
A. Tlatov, V.Senik, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory
R. Podesta, F. Podesta, C. Lopez, C.Francile
Observatorio Astronomico Felix Aguilar (OAFA)
H.Levato, Instituto de Ciencias Astronomicas, de la Tierra y del Espacio
(ICATE)
D. Buckley
South African Astronomical Observatory
O. Gres, N.M.Budnev , Yu.Ishmuhametova
Irkutsk State University
A. Gabovich, V. Yurkov, Yu. Sergienko
Blagoveschensk Educational State University, Blagoveschensk
MASTER-IAC robotic telescope (MASTER-Net: http://observ.pereplet.ru,
Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in
Spain (IAC Teide Observatory) was pointed to the Swift BAT GRB180704A
(Sonbas et al. GCN 22885) 25 sec after notice time and 41 sec after
trigger time at 2018-07-04 05:37:23 UT.
On our 10,20s exposure set there is no optical transient within SWIFT
error-box (ra=32.6375 dec=69.9478 r=0.05).
The 5-sigma upper limit has been about 14.2mag
The message may be cited.
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The observations made on zenit distance = 48 degrees, galaxy latitude b =
8 degree.
The moon (70 % bright part) is 54 degrees above the horizon. The distance
between moon and object is 83
Observations started at twilight.
The sun altitude is -7.5 degree, sunrise.