[vsnet-grb-info 39480] Fermi trigger No 776849714: Global MASTER-Net observations report

TITLE: GCN CIRCULAR NUMBER: 41418 SUBJECT: Fermi trigger No 776849714: Global MASTER-Net observations report DATE: 25/08/18 22:09:57 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs lipunov@xray.sai.msu.ru

V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, G.Antipov, A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A.Sosnovskij (CrAO), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity), D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory)

MASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Fermi GRB250814.32 (trigger No 776849714,19h 52m 09.60s , +47d 27m 36.0s, R=8.61) errorbox 28727 sec after notice time and 28760 sec after trigger time at 2025-08-14 15:34:30 UT, with upper limit up to 19.5 mag. The observations began at zenith distance = 6 deg. The sun altitude is -21.4 deg.

The galactic latitude b = 10 deg., longitude l = 82 deg.

Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2968191

We obtain a following upper limits.

Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________

28851 | 2025-08-14 15:34:30 | MASTER-Tunka | (20h 33m 22.90s , +48d 36m 16.9s) | C | 180 | 16.4 | 28851 | 2025-08-14 15:34:30 | MASTER- | (20h 17m 19.59s , +48d 42m 56.2s) | C | 180 | 16.3 | 30056 | 2025-08-14 15:54:35 | MASTER-Tunka | (20h 33m 27.75s , +48d 35m 30.4s) | C | 180 | 16.3 | 30056 | 2025-08-14 15:54:35 | MASTER- | (20h 17m 24.16s , +48d 42m 05.5s) | C | 180 | 16.1 | 31332 | 2025-08-14 16:15:51 | MASTER-Tunka | (20h 33m 21.59s , +48d 34m 42.2s) | C | 180 | 16.3 | 31332 | 2025-08-14 16:15:51 | MASTER- | (20h 17m 18.27s , +48d 41m 13.3s) | C | 180 | 16.1 | 32228 | 2025-08-14 16:30:47 | MASTER-Tunka | (20h 33m 26.53s , +48d 35m 48.2s) | C | 180 | 16.4 | 32228 | 2025-08-14 16:30:47 | MASTER- | (20h 17m 22.76s , +48d 42m 16.4s) | C | 180 | 16.1 | 32361 | 2025-08-14 16:33:59 | MASTER-Tunka | (20h 33m 26.48s , +48d 34m 27.3s) | C | 60 | 19.5 | 32361 | 2025-08-14 16:33:59 | MASTER- | (20h 17m 23.23s , +48d 40m 55.6s) | C | 60 | 19.3 | 32433 | 2025-08-14 16:35:11 | MASTER-Tunka | (20h 33m 30.41s , +48d 35m 46.3s) | C | 60 | 19.5 | 32433 | 2025-08-14 16:35:11 | MASTER- | (20h 17m 26.76s , +48d 42m 14.4s) | C | 60 | 19.3 | 32505 | 2025-08-14 16:36:23 | MASTER-Tunka | (20h 33m 24.26s , +48d 35m 02.8s) | C | 60 | 19.4 | 32505 | 2025-08-14 16:36:23 | MASTER- | (20h 17m 20.90s , +48d 41m 30.9s) | C | 60 | 19.3 | 32577 | 2025-08-14 16:37:36 | MASTER-Tunka | (20h 33m 24.14s , +48d 36m 00.8s) | C | 60 | 19.4 | 32577 | 2025-08-14 16:37:36 | MASTER- | (20h 17m 20.53s , +48d 42m 28.1s) | C | 60 | 19.3 | 32650 | 2025-08-14 16:38:49 | MASTER-Tunka | (20h 33m 30.50s , +48d 34m 58.3s) | C | 60 | 19.4 | 32650 | 2025-08-14 16:38:49 | MASTER- | (20h 17m 27.29s , +48d 41m 25.8s) | C | 60 | 19.3 | 32723 | 2025-08-14 16:40:02 | MASTER-Tunka | (20h 33m 22.90s , +48d 33m 55.9s) | C | 60 | 19.4 | 32723 | 2025-08-14 16:40:02 | MASTER- | (20h 17m 20.07s , +48d 40m 23.1s) | C | 60 | 19.3 | 32797 | 2025-08-14 16:41:16 | MASTER-Tunka | (20h 33m 30.19s , +48d 34m 09.2s) | C | 60 | 19.4 | 32797 | 2025-08-14 16:41:16 | MASTER- | (20h 17m 27.34s , +48d 40m 36.2s) | C | 60 | 19.3 | 32870 | 2025-08-14 16:42:29 | MASTER-Tunka | (20h 33m 27.31s , +48d 35m 42.0s) | C | 60 | 19.4 | 32870 | 2025-08-14 16:42:29 | MASTER- | (20h 17m 24.00s , +48d 42m 08.7s) | C | 60 | 19.3 | 32942 | 2025-08-14 16:43:41 | MASTER-Tunka | (20h 33m 27.15s , +48d 34m 10.2s) | C | 60 | 19.4 | 32942 | 2025-08-14 16:43:41 | MASTER- | (20h 17m 24.35s , +48d 40m 36.5s) | C | 60 | 19.3 | 33018 | 2025-08-14 16:44:57 | MASTER-Tunka | (20h 33m 31.39s , +48d 35m 22.4s) | C | 60 | 19.4 | 33018 | 2025-08-14 16:44:57 | MASTER- | (20h 17m 28.24s , +48d 41m 48.4s) | C | 60 | 19.3 | 33094 | 2025-08-14 16:46:12 | MASTER-Tunka | (20h 33m 24.22s , +48d 34m 44.4s) | C | 60 | 19.4 | 33094 | 2025-08-14 16:46:12 | MASTER- | (20h 17m 21.30s , +48d 41m 10.3s) | C | 60 | 19.3 | 33169 | 2025-08-14 16:47:28 | MASTER-Tunka | (20h 33m 25.21s , +48d 35m 42.1s) | C | 60 | 19.4 | 33169 | 2025-08-14 16:47:28 | MASTER- | (20h 17m 21.99s , +48d 42m 07.7s) | C | 60 | 19.3 | 33241 | 2025-08-14 16:48:40 | MASTER-Tunka | (20h 33m 30.18s , +48d 34m 39.6s) | C | 60 | 19.5 | 33241 | 2025-08-14 16:48:40 | MASTER- | (20h 17m 27.28s , +48d 41m 05.0s) | C | 60 | 19.3 | 33315 | 2025-08-14 16:49:54 | MASTER-Tunka | (20h 33m 24.74s , +48d 33m 37.1s) | C | 60 | 19.4 | 33315 | 2025-08-14 16:49:54 | MASTER- | (20h 17m 22.16s , +48d 40m 02.3s) | C | 60 | 19.3 | 33389 | 2025-08-14 16:51:07 | MASTER-Tunka | (20h 33m 30.29s , +48d 33m 58.2s) | C | 60 | 19.4 | 33389 | 2025-08-14 16:51:08 | MASTER- | (20h 17m 27.60s , +48d 40m 23.0s) | C | 60 | 19.2 | 33463 | 2025-08-14 16:52:22 | MASTER-Tunka | (20h 33m 28.09s , +48d 35m 05.7s) | C | 60 | 19.4 | 33463 | 2025-08-14 16:52:22 | MASTER- | (20h 17m 25.02s , +48d 41m 30.4s) | C | 60 | 19.2 | 33536 | 2025-08-14 16:53:35 | MASTER-Tunka | (20h 33m 28.01s , +48d 33m 59.1s) | C | 60 | 19.3 | 33536 | 2025-08-14 16:53:35 | MASTER- | (20h 17m 25.29s , +48d 40m 23.5s) | C | 60 | 19.1 | 33608 | 2025-08-14 16:54:46 | MASTER-Tunka | (20h 33m 31.60s , +48d 35m 24.4s) | C | 60 | 19.3 | 33608 | 2025-08-14 16:54:46 | MASTER- | (20h 17m 28.43s , +48d 41m 48.6s) | C | 60 | 19.1 | 33680 | 2025-08-14 16:55:59 | MASTER-Tunka | (20h 33m 24.74s , +48d 34m 26.1s) | C | 60 | 19.4 | 33680 | 2025-08-14 16:55:59 | MASTER- | (20h 17m 21.87s , +48d 40m 50.0s) | C | 60 | 19.2 | 33753 | 2025-08-14 16:57:12 | MASTER-Tunka | (20h 33m 25.74s , +48d 35m 24.3s) | C | 60 | 19.4 | 33753 | 2025-08-14 16:57:12 | MASTER- | (20h 17m 22.56s , +48d 41m 47.6s) | C | 60 | 19.2 | 33828 | 2025-08-14 16:58:27 | MASTER-Tunka | (20h 33m 31.07s , +48d 34m 21.8s) | C | 60 | 19.4 | 33828 | 2025-08-14 16:58:27 | MASTER- | (20h 17m 28.21s , +48d 40m 45.1s) | C | 60 | 19.3 | 33902 | 2025-08-14 16:59:41 | MASTER-Tunka | (20h 33m 26.34s , +48d 33m 19.5s) | C | 60 | 19.4 | 33902 | 2025-08-14 16:59:41 | MASTER- | (20h 17m 23.82s , +48d 39m 42.3s) | C | 60 | 19.3 | 33974 | 2025-08-14 17:00:53 | MASTER-Tunka | (20h 33m 30.83s , +48d 33m 42.9s) | C | 60 | 19.4 | 33974 | 2025-08-14 17:00:53 | MASTER- | (20h 17m 28.18s , +48d 40m 05.7s) | C | 60 | 19.3 | 34052 | 2025-08-14 17:02:11 | MASTER-Tunka | (20h 33m 28.99s , +48d 34m 50.2s) | C | 60 | 19.5 | 34052 | 2025-08-14 17:02:11 | MASTER- | (20h 17m 25.96s , +48d 41m 12.6s) | C | 60 | 19.3 | 34125 | 2025-08-14 17:03:24 | MASTER-Tunka | (20h 33m 28.87s , +48d 33m 29.3s) | C | 60 | 19.4 | 34125 | 2025-08-14 17:03:24 | MASTER- | (20h 17m 26.28s , +48d 39m 51.3s) | C | 60 | 19.3 | 34199 | 2025-08-14 17:04:37 | MASTER-Tunka | (20h 33m 32.08s , +48d 34m 44.8s) | C | 60 | 19.4 | 34199 | 2025-08-14 17:04:37 | MASTER- | (20h 17m 29.07s , +48d 41m 06.9s) | C | 60 | 19.3 | 34275 | 2025-08-14 17:05:54 | MASTER-Tunka | (20h 33m 26.69s , +48d 34m 08.9s) | C | 60 | 19.4 | 34275 | 2025-08-14 17:05:54 | MASTER- | (20h 17m 23.88s , +48d 40m 30.2s) | C | 60 | 19.3 | 34349 | 2025-08-14 17:07:08 | MASTER-Tunka | (20h 33m 26.26s , +48d 35m 06.8s) | C | 60 | 19.4 | 34349 | 2025-08-14 17:07:08 | MASTER- | (20h 17m 23.14s , +48d 41m 27.8s) | C | 60 | 19.2 | 34422 | 2025-08-14 17:08:21 | MASTER-Tunka | (20h 33m 31.92s , +48d 34m 04.4s) | C | 60 | 19.4 | Filter C is a clear (unfiltred) band.

The observation and reduction will continue. The message may be cited.

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