GCN Circular 23010

N.Tiurina, V. Lipunov, E. Gorbovskoy,
V.Kornilov, A.Kuznetsov, V.Chazov, I.  Gorbunov,
D.Zimnukhov, D.Kuvshinov, P.Balanutsa, V.Vladimirov, D. Vlasenko
Lomonosov Moscow State University,SAI

D. Buckley,
South African Astronomical Observatory (SAAO)

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)

O. Gres, N.M.Budnev , Yu.Ishmuhametova
Irkutsk State University (ISU)

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

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  FRB180714 (Oslowski et al., ATel #11851) 35553 sec after notice time and 6 
days 31953 sec after trigger time at 2018-07-20 19:01:16 UT. On our second 
(180s exposure)  set we  not found  optical transient within MASTER error-box 
(ra=266.55 dec=-11.7631 r=0.3) brighter then 17.0.

The observations made on zenit distance = 56 degrees, galaxy latitude b = 8 
degree.
The moon (60 % bright part) is 21 degrees above the horizon. The distance 
between  moon and  object is 47
The sun  altitude  is -19.1 degree.
The object can be observed till 2018-07-21 00:17:55


MASTER-SAAO robotic telescope (MASTER-Net: http://observ.pereplet.ru, Lipunov 
et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa 
(South African Astronomical Observatory) was pointed to the FRB 180714.42 39278 
sec after notice time and 6 days 35678 sec after trigger time at 2018-07-20 
20:03:21 UT. On our first (180s exposure)  set we not  found optical transient 
within FRB error-box (ra=266.55 dec=-11.7631 r=0.3) brighter then 19.1.

The observations made on zenit distance = 21 degrees, galaxy latitude b = 8 
degree.
The moon (61 % bright part) is 46 degrees above the horizon. The distance 
between  moon and  object is 47
The sun  altitude  is -52.8 degree.
The object can be observed till 2018-07-21 03:00:43.


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  FRB180714.42 46969 sec after notice time and 6 
days 43369 sec after trigger time at 2018-07-20 22:11:32 UT. On our first (180s 
exposure)  set we  not found optical transient within Master error-box 
(ra=266.55 dec=-11.7631 r=0.3) brighter then 17.7.


The observations made on zenit distance = 42 degrees, galaxy latitude b = 8 
degree.
The moon (61 % bright part) is 39 degrees above the horizon. The distance 
between  moon and  object is 45
The sun  altitude  is -24.6 degree.
The object can be observed till 2018-07-21 04:33:33.

The message may be cited.