TITLE: GCN CIRCULAR NUMBER: 24885 SUBJECT: Fermi trigger No 583221986 Global MASTER-Net observations report DATE: 19/06/26 17:31:19 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-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB190626.25 (trigger No 583221986, 9h 42m 48.00s , -41d 6m 36.00s, R=6.25) errorbox 38130 sec after trigger time at 2019-06-26 16:41:51 UT, with upper limit up to 19.2 mag. Observations started at twilight. The observations began at zenit distance = 33 deg. The sun altitude is -12.2 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=1057238 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 38161 | 2019-06-26 16:41:51 | MASTER-SAAO | ( 9h 36m 10.27s , -41d 50m 29.68s) | C | 60 | 18.2 | 38255 | 2019-06-26 16:43:25 | MASTER-SAAO | ( 9h 39m 49.76s , -39d 50m 04.44s) | C | 60 | 18.4 | 38351 | 2019-06-26 16:45:01 | MASTER-SAAO | ( 9h 33m 01.63s , -43d 50m 45.52s) | C | 60 | 18.5 | 38452 | 2019-06-26 16:46:42 | MASTER-SAAO | ( 9h 43m 56.36s , -37d 50m 01.81s) | C | 60 | 18.7 | 38546 | 2019-06-26 16:48:17 | MASTER-SAAO | ( 9h 36m 10.20s , -41d 50m 24.20s) | C | 60 | 18.7 | 38640 | 2019-06-26 16:49:50 | MASTER-SAAO | ( 9h 46m 55.16s , -41d 50m 18.50s) | C | 60 | 18.8 | 39172 | 2019-06-26 16:58:42 | MASTER-SAAO | ( 9h 39m 48.34s , -39d 50m 28.06s) | C | 60 | 18.9 | 39268 | 2019-06-26 17:00:18 | MASTER-SAAO | ( 9h 50m 13.79s , -39d 50m 24.99s) | C | 60 | 19.0 | 39361 | 2019-06-26 17:01:51 | MASTER-SAAO | ( 9h 33m 02.91s , -43d 51m 14.02s) | C | 60 | 18.8 | 39455 | 2019-06-26 17:03:26 | MASTER-SAAO | ( 9h 44m 08.88s , -43d 50m 27.34s) | C | 60 | 18.7 | 39553 | 2019-06-26 17:05:03 | MASTER-SAAO | ( 9h 43m 55.00s , -37d 50m 33.68s) | C | 60 | 19.0 | 39647 | 2019-06-26 17:06:37 | MASTER-SAAO | ( 9h 54m 03.17s , -37d 50m 29.86s) | C | 60 | 19.2 | 39742 | 2019-06-26 17:08:13 | MASTER-SAAO | ( 9h 46m 56.44s , -41d 50m 49.73s) | C | 60 | 19.0 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.