TITLE: GCN CIRCULAR NUMBER: 23006 SUBJECT: GRB 180722A: MASTER optical observation DATE: 18/07/22 08:18:13 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, N.Tiurina, 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-OAFA robotic telescope (MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) was pointed to the GRB180722A( Shimomukai et al., MAXI/GSC detection, GCN #23005) 17 sec after notice time and 2572 sec after trigger time at 2018-07-22 06:42:08 UT. On our first (180s exposure) set we not found optical transient within MAXI error-box (ra=302.613 dec=24.2364 r=1) brighter then 17.7. The observations made on zenit distance = 62 degrees, galaxy latitude b = -5 degrees. The moon (74 % bright part) is 4 degrees above the horizon. The distance between moon and object is 75 . The sun altitude is -61.0 degree. The object can be observed till 2018-07-22 09:45:34. The message may be cited.