TITLE: GCN CIRCULAR NUMBER: 24915 SUBJECT: Fermi trigger No 583567803 Global MASTER-Net observations report DATE: 19/06/30 07:31:08 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-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB190630.26 (trigger No 583567803, 20h 27m 55.20s , - 1d 19m 48.00s, R=7.65) errorbox 1850 sec after trigger time at 2019-06-30 06:40:48 UT, with upper limit up to 18.4 mag. The observations began at zenit distance = 30 deg. The sun altitude is -61.8 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=1061032 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 1880 | 2019-06-30 06:40:48 | MASTER-OAFA | ( 20h 27m 45.96s , - 2d 4m 34.94s) | C | 60 | 18.1 | 1986 | 2019-06-30 06:42:33 | MASTER-OAFA | ( 20h 27m 00.73s , - 0d 4m 08.16s) | C | 60 | 18.1 | 2091 | 2019-06-30 06:44:18 | MASTER-OAFA | ( 20h 30m 00.15s , - 4d 4m 27.16s) | C | 60 | 18.1 | 2204 | 2019-06-30 06:46:12 | MASTER-OAFA | ( 20h 27m 46.02s , - 2d 4m 01.11s) | C | 60 | 18.1 | 2308 | 2019-06-30 06:47:56 | MASTER-OAFA | ( 20h 35m 45.12s , - 2d 4m 09.35s) | C | 60 | 18.1 | 2417 | 2019-06-30 06:49:45 | MASTER-OAFA | ( 20h 27m 00.81s , - 0d 4m 16.13s) | C | 60 | 18.1 | 2522 | 2019-06-30 06:51:30 | MASTER-OAFA | ( 20h 35m 02.07s , - 0d 4m 25.02s) | C | 60 | 18.3 | 2628 | 2019-06-30 06:53:16 | MASTER-OAFA | ( 20h 30m 00.28s , - 4d 3m 58.59s) | C | 60 | 18.1 | 2732 | 2019-06-30 06:54:59 | MASTER-OAFA | ( 20h 38m 00.13s , - 4d 4m 08.52s) | C | 60 | 18.0 | 2841 | 2019-06-30 06:56:48 | MASTER-OAFA | ( 20h 35m 45.24s , - 2d 4m 24.24s) | C | 60 | 18.1 | 2944 | 2019-06-30 06:58:31 | MASTER-OAFA | ( 20h 35m 02.15s , - 0d 4m 22.22s) | C | 60 | 18.4 | 3048 | 2019-06-30 07:00:16 | MASTER-OAFA | ( 20h 38m 01.27s , - 4d 4m 06.94s) | C | 60 | 18.0 | 3171 | 2019-06-30 07:02:18 | MASTER-OAFA | ( 20h 11m 00.92s , - 0d 3m 50.77s) | C | 60 | 17.9 | 3277 | 2019-06-30 07:04:04 | MASTER-OAFA | ( 20h 27m 47.76s , + 1d 56m 07.47s) | C | 60 | 18.0 | 3389 | 2019-06-30 07:05:57 | MASTER-OAFA | ( 20h 11m 44.64s , - 2d 3m 51.62s) | C | 60 | 17.8 | 3496 | 2019-06-30 07:07:44 | MASTER-OAFA | ( 20h 11m 02.26s , - 0d 3m 50.25s) | C | 60 | 17.9 | 3607 | 2019-06-30 07:09:35 | MASTER-OAFA | ( 20h 19m 02.09s , - 0d 3m 41.02s) | C | 60 | 18.1 | 3713 | 2019-06-30 07:11:21 | MASTER-OAFA | ( 20h 27m 46.29s , + 1d 56m 08.58s) | C | 60 | 18.0 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.