TITLE: GCN CIRCULAR NUMBER: 19703 SUBJECT: GRB 160714A: MASTER early optical observations DATE: 16/07/14 09:16:52 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs A.Kuznetsov, V. Lipunov, E.S.Gorbovskoy, N.Tyurina, V.Kornilov, P.Balanutsa, A.Kuznetsov, D.Kuvshinov, Lomonosov Moscow State University, Sternberg Astronomical Institute R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres The Instituto de Astrofisica de Canarias D.Buckley, S. Potter, A.Kniazev, M.Kotze South African Astronomical Observatory O.Gres, K.Ivanov, S.Yazev, N.M.Budnev, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Senik Kislovodsk Solar Station of the Pulkovo Observatory V.Yurkov, Yu.Sergienko, A.Gabovich, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk Ricardo Podesta, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA) Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE) MASTER-IAC robotic telescope (MASTER-Net: http://observ.pereplet.ru, 4 square degrees twin telescope) located in IAC was pointed to the GRB160714A (Siegel et al., GCN 19697) 26 sec after notice time and 50 sec after trigger time at 2016-07-14 02:20:05 UT. On our first (10s exposure) set we not found optical transient within SWIFT error-box (ra=15 37 50 dec=+63 49 51 r=0.05 degrees) brighter then 16.1. Our automatic results of the first 20 minutes observations after trigger tieme are: Id Pro.type Time UT Exp.time Limit Filt. Tube s 269575 Alert 02:20:05 10 16.1 P| EAST 269574 Alert 02:20:05 10 16.4 P- WEST 269582 SumAlert 02:20:05 60 17.7 P| EAST 269585 SumAlert 02:20:05 60 17.9 P- WEST 269639 SumAlert 02:20:05 700 19.6 P| EAST 269626 SumAlert 02:20:05 700 19.9 P- WEST 269577 Alert 02:20:47 20 17.3 P| EAST 269576 Alert 02:20:47 20 17.3 P- WEST 269579 Alert 02:21:21 30 17.5 P| EAST 269578 Alert 02:21:21 30 17.8 P- WEST 269581 Alert 02:22:05 30 17.5 P| EAST 269580 Alert 02:22:05 30 17.6 P- WEST 269588 SumAlert 02:22:05 120 18.6 P| EAST 269591 SumAlert 02:22:05 120 18.6 P- WEST 269584 Alert 02:22:49 40 17.8 P| EAST 269583 Alert 02:22:49 40 17.9 P- WEST 269587 Alert 02:23:41 50 17.9 P| EAST 269586 Alert 02:23:41 50 17.9 P- WEST 269590 Alert 02:24:46 70 18.2 P| EAST 269589 Alert 02:24:46 70 18.2 P- WEST 269597 SumAlert 02:24:46 250 19.1 P| EAST 269596 SumAlert 02:24:46 250 19.4 P- WEST 269592 Alert 02:26:11 80 18.2 P| EAST 269593 Alert 02:26:11 80 18.5 P- WEST 269595 Alert 02:27:45 100 18.5 P| EAST 269594 Alert 02:27:45 100 18.6 P- WEST 269599 Alert 02:29:38 120 18.5 P| EAST 269598 Alert 02:29:38 120 18.6 P- WEST 269601 Alert 02:31:51 150 18.6 P| EAST 269600 Alert 02:31:51 150 18.9 P- WEST 269603 Alert 02:34:34 180 18.5 P| EAST 269602 Alert 02:34:34 180 18.6 P- WEST 269665 SumAlert 02:34:34 1800 19.6 P| EAST 269675 SumAlert 02:34:34 1800 19.5 P- WEST 269604 Alert 02:38:06 180 18.5 P| EAST 269605 Alert 02:38:06 180 18.6 P- WEST 269610 SumAlert 02:38:06 540 19.2 P| EAST 269613 SumAlert 02:38:06 540 19.2 P- WEST 269606 Alert 02:41:33 180 18.5 P| EAST 269607 Alert 02:41:33 180 18.6 P- WEST The message may be cited.