TITLE: GCN CIRCULAR NUMBER: 25161 SUBJECT: Fermi trigger No 585864875 Global MASTER-Net observations report DATE: 19/07/26 21:16:27 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 GRB190726.84 (trigger No 585864875, 22h 50m 43.20s , -55d 58m 48.00s, R=2.43) errorbox 546 sec after notice time and 575 sec after trigger time at 2019-07-26 20:24:05 UT, with upper limit up to 20.7 mag. The observations began at zenit distance = 55 deg. The sun altitude is -56.0 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=1087257 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 635 | 2019-07-26 20:24:05 | MASTER-SAAO | ( 22h 57m 03.97s , -56d 2m 08.59s) | C | 120 | 19.8 | 795 | 2019-07-26 20:24:05 | MASTER-SAAO | ( 22h 57m 03.98s , -56d 2m 08.57s) | C | 440 | 20.7 | Coadd 794 | 2019-07-26 20:26:34 | MASTER-SAAO | ( 22h 57m 15.45s , -56d 2m 06.40s) | C | 140 | 20.0 | 982 | 2019-07-26 20:29:23 | MASTER-SAAO | ( 22h 57m 16.07s , -56d 2m 05.39s) | C | 180 | 20.0 | 1191 | 2019-07-26 20:32:51 | MASTER-SAAO | ( 22h 57m 16.71s , -56d 2m 04.21s) | C | 180 | 20.0 | 2259 | 2019-07-26 20:51:39 | MASTER-SAAO | ( 22h 46m 07.83s , -56d 3m 58.03s) | C | 60 | 19.7 | 2360 | 2019-07-26 20:53:20 | MASTER-SAAO | ( 22h 31m 03.04s , -58d 4m 01.56s) | C | 60 | 19.5 | 2457 | 2019-07-26 20:54:57 | MASTER-SAAO | ( 22h 34m 07.93s , -54d 3m 43.99s) | C | 60 | 19.7 | 2554 | 2019-07-26 20:56:34 | MASTER-SAAO | ( 22h 46m 08.95s , -56d 4m 14.56s) | C | 60 | 19.6 | 2650 | 2019-07-26 20:58:10 | MASTER-SAAO | ( 23h 0m 29.20s , -56d 4m 26.40s) | C | 60 | 19.6 | 2756 | 2019-07-26 20:59:56 | MASTER-SAAO | ( 22h 31m 04.83s , -58d 3m 38.20s) | C | 60 | 19.5 | 2857 | 2019-07-26 21:01:37 | MASTER-SAAO | ( 22h 46m 09.55s , -58d 3m 52.12s) | C | 60 | 19.3 | 2954 | 2019-07-26 21:03:14 | MASTER-SAAO | ( 22h 34m 09.85s , -54d 4m 00.28s) | C | 60 | 19.8 | 3051 | 2019-07-26 21:04:51 | MASTER-SAAO | ( 22h 47m 48.00s , -54d 4m 11.92s) | C | 60 | 19.7 | 3149 | 2019-07-26 21:06:29 | MASTER-SAAO | ( 23h 0m 30.87s , -56d 4m 02.12s) | C | 60 | 19.7 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.