TITLE: GCN CIRCULAR NUMBER: 24796 SUBJECT: Fermi trigger No 582012834 Global MASTER-Net observations report DATE: 19/06/13 03:31:52 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-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB190612.26 (trigger No 582012834, 1h 10m 16.01s , +14d 0m 00.00s, R=31.0667) errorbox 64214 sec after trigger time at 2019-06-13 00:04:04 UT, with upper limit up to 19.4 mag. Observations started at twilight. The observations began at zenit distance = 74 deg. The sun altitude is -15.4 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=1047013 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 64305 | 2019-06-13 00:04:04 | MASTER-Tavrida | ( 0h 43m 15.67s , +41d 9m 08.78s) | C | 180 | 19.3 | 64305 | 2019-06-13 00:04:04 | MASTER-Tavrida | ( 0h 42m 10.11s , +41d 6m 11.12s) | C | 180 | 19.4 | 64519 | 2019-06-13 00:07:38 | MASTER-Tavrida | ( 0h 43m 19.08s , +41d 9m 44.46s) | C | 180 | 19.3 | 64519 | 2019-06-13 00:07:38 | MASTER-Tavrida | ( 0h 42m 10.24s , +41d 5m 46.19s) | C | 180 | 19.4 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.