TITLE: GCN CIRCULAR NUMBER: 24788 SUBJECT: Fermi trigger No 582004649 Global MASTER-Net observations report DATE: 19/06/12 06:16:12 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias) D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-IAC robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB190612.16 (trigger No 582004649, 14h 55m 48.00s , +62d 6m 00.00s, R=9.3) errorbox 891 sec after trigger time at 2019-06-12 04:12:15 UT, with upper limit up to 19.1 mag. The observations began at zenit distance = 62 deg. The sun altitude is -21.4 deg. The galactic latitude b = -60 deg., longitude l = 98 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1046933 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 921 | 2019-06-12 04:12:15 | MASTER-IAC | ( 14h 53m 58.77s , +62d 1m 14.57s) | C | 60 | 18.9 | 921 | 2019-06-12 04:12:15 | MASTER-IAC | ( 14h 36m 36.84s , +62d 5m 42.10s) | C | 60 | 18.6 | 1063 | 2019-06-12 04:14:37 | MASTER-IAC | ( 14h 47m 00.09s , +60d 5m 21.97s) | C | 60 | 18.7 | 1064 | 2019-06-12 04:14:37 | MASTER-IAC | ( 15h 3m 18.01s , +60d 0m 55.14s) | C | 60 | 19.0 | 1196 | 2019-06-12 04:16:50 | MASTER-IAC | ( 15h 21m 04.29s , +64d 0m 28.23s) | C | 60 | 19.1 | 1196 | 2019-06-12 04:16:50 | MASTER-IAC | ( 15h 2m 28.79s , +64d 5m 00.79s) | C | 60 | 18.7 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.