TITLE: GCN CIRCULAR NUMBER: 22783 SUBJECT: GRB 180614A: MASTER observation DATE: 18/06/15 11:28:04 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, A.Kuznetsov, I. Gorbunov, D. Vlasenko, D.Zimnukhov, D.Kuvshinov, P.Balanutsa, V.Vladimirov Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow State University R. Podesta, F. Podesta, C. Lopez, C.Francile Observatorio Astronomico Felix Aguilar (OAFA) H.Levato, C. Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE) R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres The Instituto de Astrofisica de Canarias D. Buckley South African Astronomical Observatory O. Gres, N.M.Budnev , Yu.Ishmuhametova Irkutsk State University A. Tlatov, V.Senik, D. Dormidontov Kislovodsk Solar Station of the Pulkovo Observatory A. Gabovich, V. Yurkov, Yu. Sergienko Blagoveschensk Educational State University, Blagoveschensk MASTER-Kislovodsk robotic telescope (MASTER-Net: http://observ.pereplet.ru Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) , located in Kislovodsk Solar Station of Pulkovo observatory, was pointed to the Swift GRB180614A (Gropp et al. GCN #22780) 11 sec after notice time and 26 sec after trigger time at 2018-06-14 19:16:40 UT. On our images we didn't find optical transient up to 20 mag, within SWIFT error-box RA,Dec=00h 12m 18.83s +46d 57' 10.8" ( Evans et al. GCN22781, Beardmore et al. GCN22782). We have a number of images with the following unfiltered upper limits: Time_start,UT Exp,s m_lim 2018-06-14 19:16:40 10 16.6 2018-06-14 19:17:00 10 16.5 2018-06-14 19:17:20 10 16.7 2018-06-14 19:17:41 20 17.1 2018-06-14 19:18:11 20 17.2 2018-06-14 19:18:41 30 17.3 2018-06-14 19:19:21 40 17.6 2018-06-14 19:20:11 50 17.8 2018-06-14 19:21:12 60 18.0 2018-06-14 19:22:22 70 18.0 2018-06-14 19:25:23 110 18.4 2018-06-14 19:27:23 130 18.4 2018-06-14 19:33:27 180 18.3 2018-06-14 19:33:27 3600 20.0 [20 images x 180 seconds] 2018-06-14 19:36:52 180 18.3 2018-06-14 19:40:16 180 18.3 2018-06-14 19:43:41 180 18.3 2018-06-14 19:47:05 180 18.4 2018-06-14 19:50:29 180 18.6 2018-06-14 19:53:54 180 18.5 2018-06-14 19:57:18 180 18.6 2018-06-14 20:00:43 180 18.6 2018-06-14 20:04:07 180 18.6 2018-06-14 20:07:31 180 18.6 2018-06-14 20:10:55 180 18.6 2018-06-14 20:14:20 180 18.6 2018-06-14 20:17:45 180 18.6 2018-06-14 20:21:09 180 18.8 2018-06-14 20:24:34 180 18.6 2018-06-14 20:27:59 180 18.6 2018-06-14 20:31:23 180 18.9 2018-06-14 20:34:48 180 18.8 2018-06-14 20:38:12 180 18.8 ==================================================================== The observations started on zenit distance = 78 degrees, galaxy latitude b = -15 degree. The moon ( 2 % bright part) below the horizon (The altitude of the Moon is -15 degree ). The sun altitude is -18.8 degree. The object could be observed up to sunrise at 2018-06-15 01:26:34