TITLE: GCN CIRCULAR NUMBER: 23176 SUBJECT: GRB 180824A: MASTER inspection IPN short GRB error box DATE: 18/08/26 07:28:28 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, D. Vlasenko, N.Tiurina, V.Kornilov, A.Kuznetsov, V.Chazov, I. Gorbunov, D.Zimnukhov, D.Kuvshinov, P.Balanutsa, V.Vladimirov, Lomonosov Moscow State University,SAI A. Tlatov, V.Senik, D. Dormidontov Kislovodsk Solar Station of the Pulkovo Observatory D.Svinkin (Ioffe Institute, Sankt Petersburg) 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) 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) located in Kislovodsk Solar Station of the Pulkovo Observatory was starting survey on the IPN GRB180824A error-box (Svinkin et al., GCN #23174) 274 sec after notice time and 35665 sec after trigger time at 2018-08-24 19:59:44 UT. The 5-sigma upper limit on our first (180s exposure) set is about 18.9 mag . The galacitc latitude b = 0 deg. The observations made on zenit distance = 36 deg.The moon (97 % bright part) is 29 deg. above the horizon. The distance between moon and object is 87 The sun altitude is -32.9 deg. The object can be observed till sunrise at 2018-08-25 02:23:27 There are several bright galaxy (d < 100 Mpc) in IPN error box: Galaxy name | center | b_mag | dist -----------------------+-----------------------+--------+--------- PGC089890 | (15.7675d , 54.0347d) | 14.178 | 88.7359 2MASS00061177+5916507 | (1.54907d , 59.2808d) | 14.559 | 81.8258 2MASS00095357+5859451 | (2.47322d , 58.9959d) | 14.733 | 32.3946 2MASS00035040+5929552 | (0.96001d , 59.4987d) | 15.373 | 14.6266 The MASTER-Kislovodsk cover map is available at http://www.pereplet.ru/lipunov/images/master_MAP_GRB180824A.jpg There is no OT detetcted. The message may be cited.