TITLE: GCN CIRCULAR NUMBER: 23010 SUBJECT: FRB 180714: MASTER optical inspection of the Fast Rado Burst Transient DATE: 18/07/22 12:06:13 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs 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.