TITLE: GCN CIRCULAR NUMBER: 41374 SUBJECT: Fermi trigger No 776818276: Global MASTER-Net observations report DATE: 25/08/14 16:14:45 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-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB250813.95 (trigger No 776818276,22h 11m 00.00s , +19d 13m 58.8s, R=7.28) errorbox 2746 sec after notice time and 2777 sec after trigger time at 2025-08-13 23:37:29 UT, with upper limit up to 18.0 mag. The observations began at zenith distance = 34 deg. The sun altitude is -24.0 deg. The galactic latitude b = -30 deg., longitude l = 79 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2967904 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 2808 | 2025-08-13 23:37:29 | MASTER-Kislovodsk | (22h 08m 10.03s , +18d 25m 11.7s) | C | 60 | 17.7 | 2808 | 2025-08-13 23:37:29 | MASTER- | (22h 03m 28.88s , +18d 46m 39.1s) | C | 60 | 14.8 | 2984 | 2025-08-13 23:40:25 | MASTER-Kislovodsk | (22h 07m 29.43s , +20d 20m 47.2s) | C | 60 | 17.8 | 2984 | 2025-08-13 23:40:25 | MASTER- | (22h 02m 44.88s , +20d 42m 11.9s) | C | 60 | 14.9 | 3156 | 2025-08-13 23:43:17 | MASTER-Kislovodsk | (22h 10m 24.38s , +16d 32m 57.3s) | C | 60 | 17.5 | 3157 | 2025-08-13 23:43:17 | MASTER- | (22h 05m 45.98s , +16d 54m 29.9s) | C | 60 | 14.6 | 3339 | 2025-08-13 23:46:19 | MASTER-Kislovodsk | (22h 24m 10.71s , +18d 27m 26.3s) | C | 60 | 17.5 | 3339 | 2025-08-13 23:46:19 | MASTER- | (22h 19m 27.90s , +18d 49m 00.7s) | C | 60 | 14.5 | 3418 | 2025-08-13 23:47:39 | MASTER-Kislovodsk | (22h 08m 15.78s , +18d 25m 52.8s) | C | 60 | 17.9 | 3418 | 2025-08-13 23:47:39 | MASTER- | (22h 03m 36.62s , +18d 47m 14.6s) | C | 60 | 14.8 | 3591 | 2025-08-13 23:50:32 | MASTER-Kislovodsk | (22h 07m 30.54s , +20d 19m 04.2s) | C | 60 | 17.7 | 3591 | 2025-08-13 23:50:32 | MASTER- | (22h 02m 47.85s , +20d 40m 34.3s) | C | 60 | 14.7 | 3773 | 2025-08-13 23:53:33 | MASTER-Kislovodsk | (22h 10m 21.49s , +16d 31m 09.9s) | C | 60 | 17.6 | 3773 | 2025-08-13 23:53:33 | MASTER- | (22h 05m 44.59s , +16d 52m 43.6s) | C | 60 | 14.5 | 3853 | 2025-08-13 23:54:53 | MASTER-Kislovodsk | (22h 23m 41.95s , +20d 20m 32.4s) | C | 60 | 17.8 | 3853 | 2025-08-13 23:54:53 | MASTER- | (22h 18m 59.12s , +20d 42m 15.9s) | C | 60 | 14.7 | 3933 | 2025-08-13 23:56:13 | MASTER-Kislovodsk | (22h 08m 08.08s , +22d 13m 26.1s) | C | 60 | 17.7 | 3933 | 2025-08-13 23:56:13 | MASTER- | (22h 03m 21.71s , +22d 35m 08.2s) | C | 60 | 14.6 | 4012 | 2025-08-13 23:57:33 | MASTER-Kislovodsk | (22h 24m 09.79s , +18d 26m 53.9s) | C | 60 | 17.7 | 4012 | 2025-08-13 23:57:33 | MASTER- | (22h 19m 30.00s , +18d 48m 52.6s) | C | 60 | 14.4 | 4092 | 2025-08-13 23:58:53 | MASTER-Kislovodsk | (22h 08m 13.06s , +18d 25m 21.0s) | C | 60 | 17.9 | 4092 | 2025-08-13 23:58:53 | MASTER- | (22h 03m 32.84s , +18d 46m 59.0s) | C | 60 | 15.1 | 4172 | 2025-08-14 00:00:13 | MASTER-Kislovodsk | (22h 13m 51.74s , +14d 36m 31.5s) | C | 60 | 18.0 | 4172 | 2025-08-14 00:00:13 | MASTER- | (22h 09m 21.28s , +14d 57m 54.6s) | C | 60 | 14.4 | 4252 | 2025-08-14 00:01:33 | MASTER-Kislovodsk | (22h 07m 28.98s , +20d 18m 32.7s) | C | 60 | 17.8 | 4252 | 2025-08-14 00:01:33 | MASTER- | (22h 02m 45.07s , +20d 40m 23.5s) | C | 60 | 14.8 | 4332 | 2025-08-14 00:02:52 | MASTER-Kislovodsk | (22h 26m 12.78s , +16d 32m 27.6s) | C | 60 | 17.7 | 4332 | 2025-08-14 00:02:52 | MASTER- | (22h 21m 35.76s , +16d 54m 11.5s) | C | 60 | 14.6 | 5035 | 2025-08-14 00:14:36 | MASTER-Kislovodsk | (22h 10m 18.04s , +16d 32m 03.7s) | C | 60 | 17.6 | 5035 | 2025-08-14 00:14:36 | MASTER- | (22h 05m 43.29s , +16d 53m 37.3s) | C | 60 | 14.4 | 5115 | 2025-08-14 00:15:56 | MASTER-Kislovodsk | (22h 23m 41.08s , +20d 19m 17.0s) | C | 60 | 17.7 | 5115 | 2025-08-14 00:15:56 | MASTER- | (22h 18m 57.71s , +20d 41m 09.0s) | C | 60 | 14.7 | 5195 | 2025-08-14 00:17:15 | MASTER-Kislovodsk | (22h 08m 06.96s , +22d 11m 39.9s) | C | 60 | 17.6 | 5195 | 2025-08-14 00:17:15 | MASTER- | (22h 03m 22.97s , +22d 33m 19.9s) | C | 60 | 14.4 | 5275 | 2025-08-14 00:18:35 | MASTER-Kislovodsk | (22h 24m 14.86s , +18d 24m 30.7s) | C | 60 | 17.6 | 5275 | 2025-08-14 00:18:35 | MASTER- | (22h 19m 35.72s , +18d 46m 14.2s) | C | 60 | 14.6 | 5354 | 2025-08-14 00:19:55 | MASTER-Kislovodsk | (22h 08m 10.37s , +18d 25m 29.3s) | C | 60 | 17.8 | 5354 | 2025-08-14 00:19:55 | MASTER- | (22h 03m 35.00s , +18d 46m 54.5s) | C | 60 | 14.7 | 5434 | 2025-08-14 00:21:15 | MASTER-Kislovodsk | (22h 13m 55.03s , +14d 36m 10.9s) | C | 60 | 17.8 | 5434 | 2025-08-14 00:21:15 | MASTER- | (22h 09m 26.62s , +14d 57m 29.9s) | C | 60 | 14.4 | 5514 | 2025-08-14 00:22:35 | MASTER-Kislovodsk | (22h 07m 30.65s , +20d 19m 20.6s) | C | 60 | 17.8 | 5514 | 2025-08-14 00:22:35 | MASTER- | (22h 02m 51.61s , +20d 40m 54.7s) | C | 60 | 14.9 | 5594 | 2025-08-14 00:23:55 | MASTER-Kislovodsk | (22h 26m 09.86s , +16d 31m 01.7s) | C | 60 | 17.6 | 5594 | 2025-08-14 00:23:55 | MASTER- | (22h 21m 34.79s , +16d 52m 40.2s) | C | 60 | 14.6 | 5673 | 2025-08-14 00:25:14 | MASTER-Kislovodsk | (22h 10m 17.52s , +16d 31m 26.8s) | C | 60 | 17.7 | 5673 | 2025-08-14 00:25:14 | MASTER- | (22h 05m 43.53s , +16d 52m 58.7s) | C | 60 | 14.4 | 5753 | 2025-08-14 00:26:34 | MASTER-Kislovodsk | (22h 23m 41.53s , +20d 18m 44.5s) | C | 60 | 17.8 | 5753 | 2025-08-14 00:26:34 | MASTER- | (22h 19m 01.61s , +20d 40m 23.1s) | C | 60 | 14.8 | 5833 | 2025-08-14 00:27:53 | MASTER-Kislovodsk | (22h 08m 06.39s , +22d 11m 07.6s) | C | 60 | 17.7 | 5833 | 2025-08-14 00:27:53 | MASTER- | (22h 03m 23.24s , +22d 32m 45.0s) | C | 60 | 14.6 | 5913 | 2025-08-14 00:29:13 | MASTER-Kislovodsk | (22h 24m 14.63s , +18d 24m 10.0s) | C | 60 | 17.7 | 5913 | 2025-08-14 00:29:13 | MASTER- | (22h 19m 36.26s , +18d 45m 52.2s) | C | 60 | 14.5 | 5992 | 2025-08-14 00:30:33 | MASTER-Kislovodsk | (22h 08m 11.02s , +18d 24m 45.7s) | C | 60 | 17.9 | 5992 | 2025-08-14 00:30:33 | MASTER- | (22h 03m 36.46s , +18d 46m 08.9s) | C | 60 | 14.7 | 6072 | 2025-08-14 00:31:53 | MASTER-Kislovodsk | (22h 13m 55.87s , +14d 35m 37.3s) | C | 60 | 17.8 | 6072 | 2025-08-14 00:31:53 | MASTER- | (22h 09m 28.10s , +14d 56m 52.3s) | C | 60 | 14.4 | 6152 | 2025-08-14 00:33:12 | MASTER-Kislovodsk | (22h 07m 29.61s , +20d 18m 28.1s) | C | 60 | 17.8 | 6152 | 2025-08-14 00:33:13 | MASTER- | (22h 02m 51.28s , +20d 39m 56.7s) | C | 60 | 15.0 | 6232 | 2025-08-14 00:34:32 | MASTER-Kislovodsk | (22h 26m 07.82s , +16d 30m 36.5s) | C | 60 | 17.7 | 6232 | 2025-08-14 00:34:32 | MASTER- | (22h 21m 34.79s , +16d 52m 23.4s) | C | 60 | 14.3 | 6312 | 2025-08-14 00:35:53 | MASTER-Kislovodsk | (22h 10m 18.37s , +16d 30m 59.9s) | C | 60 | 17.8 | 6312 | 2025-08-14 00:35:53 | MASTER- | (22h 05m 47.66s , +16d 52m 15.6s) | C | 60 | 14.4 | 6392 | 2025-08-14 00:37:13 | MASTER-Kislovodsk | (22h 23m 40.10s , +20d 18m 20.1s) | C | 60 | 17.8 | 6392 | 2025-08-14 00:37:13 | MASTER- | (22h 18m 58.10s , +20d 40m 04.6s) | C | 60 | 14.9 | 6472 | 2025-08-14 00:38:32 | MASTER-Kislovodsk | (22h 08m 06.07s , +22d 10m 41.2s) | C | 60 | 17.7 | 6472 | 2025-08-14 00:38:32 | MASTER- | (22h 03m 21.72s , +22d 31m 59.9s) | C | 60 | 14.4 | 6552 | 2025-08-14 00:39:53 | MASTER-Kislovodsk | (22h 24m 15.13s , +18d 23m 33.6s) | C | 60 | 17.7 | 6552 | 2025-08-14 00:39:53 | MASTER- | (22h 19m 38.79s , +18d 45m 23.9s) | C | 60 | 14.0 | 6632 | 2025-08-14 00:41:13 | MASTER-Kislovodsk | (22h 08m 09.79s , +18d 24m 27.6s) | C | 60 | 17.9 | 6632 | 2025-08-14 00:41:13 | MASTER- | (22h 03m 35.86s , +18d 45m 46.2s) | C | 60 | 14.8 | 6712 | 2025-08-14 00:42:33 | MASTER-Kislovodsk | (22h 13m 55.82s , +14d 35m 22.4s) | C | 60 | 17.9 | 6712 | 2025-08-14 00:42:33 | MASTER- | (22h 09m 28.63s , +14d 56m 38.2s) | C | 60 | 14.3 | 6792 | 2025-08-14 00:43:53 | MASTER-Kislovodsk | (22h 07m 28.23s , +20d 18m 24.3s) | C | 60 | 17.9 | 6792 | 2025-08-14 00:43:53 | MASTER- | (22h 02m 50.64s , +20d 39m 51.8s) | C | 60 | 14.8 | 6872 | 2025-08-14 00:45:13 | MASTER-Kislovodsk | (22h 26m 07.62s , +16d 30m 11.5s) | C | 60 | 17.6 | 6872 | 2025-08-14 00:45:13 | MASTER- | (22h 21m 33.88s , +16d 51m 45.9s) | C | 60 | 14.6 | 6952 | 2025-08-14 00:46:33 | MASTER-Kislovodsk | (22h 10m 18.06s , +16d 30m 32.1s) | C | 60 | 17.6 | 6952 | 2025-08-14 00:46:33 | MASTER- | (22h 05m 45.53s , +16d 52m 01.0s) | C | 60 | 14.6 | 7032 | 2025-08-14 00:47:53 | MASTER-Kislovodsk | (22h 23m 40.75s , +20d 17m 53.8s) | C | 60 | 17.8 | 7032 | 2025-08-14 00:47:53 | MASTER- | (22h 18m 59.61s , +20d 39m 37.5s) | C | 60 | 14.8 | 7112 | 2025-08-14 00:49:13 | MASTER-Kislovodsk | (22h 08m 05.53s , +22d 10m 12.6s) | C | 60 | 17.6 | 7112 | 2025-08-14 00:49:13 | MASTER- | (22h 03m 23.89s , +22d 31m 42.7s) | C | 60 | 14.6 | 7192 | 2025-08-14 00:50:33 | MASTER-Kislovodsk | (22h 24m 13.75s , +18d 23m 04.7s) | C | 60 | 17.7 | 7192 | 2025-08-14 00:50:33 | MASTER- | (22h 19m 36.81s , +18d 44m 41.7s) | C | 60 | 14.8 | 7272 | 2025-08-14 00:51:53 | MASTER-Kislovodsk | (21h 58m 11.91s , +14d 35m 47.6s) | C | 60 | 17.1 | 7272 | 2025-08-14 00:51:53 | MASTER- | (21h 53m 44.26s , +14d 57m 09.2s) | C | 60 | 14.3 | 7352 | 2025-08-14 00:53:13 | MASTER-Kislovodsk | (22h 13m 54.38s , +14d 34m 46.8s) | C | 60 | 17.9 | 7352 | 2025-08-14 00:53:13 | MASTER- | (22h 09m 28.22s , +14d 56m 01.7s) | C | 60 | 14.3 | 7432 | 2025-08-14 00:54:32 | MASTER-Kislovodsk | (21h 51m 13.95s , +20d 16m 59.8s) | C | 60 | 17.4 | 7432 | 2025-08-14 00:54:32 | MASTER- | (21h 46m 38.71s , +20d 38m 21.3s) | C | 60 | 14.6 | 7512 | 2025-08-14 00:55:53 | MASTER-Kislovodsk | (22h 26m 08.99s , +16d 29m 45.1s) | C | 60 | 17.6 | 7512 | 2025-08-14 00:55:53 | MASTER- | (22h 21m 36.15s , +16d 51m 19.2s) | C | 60 | 14.4 | 7592 | 2025-08-14 00:57:13 | MASTER-Kislovodsk | (22h 24m 29.76s , +22d 12m 32.8s) | C | 60 | 17.7 | 7592 | 2025-08-14 00:57:13 | MASTER- | (22h 19m 44.77s , +22d 34m 21.0s) | C | 60 | 14.7 | 7672 | 2025-08-14 00:58:33 | MASTER-Kislovodsk | (22h 23m 39.23s , +20d 17m 28.4s) | C | 60 | 17.6 | 7672 | 2025-08-14 00:58:33 | MASTER- | (22h 19m 01.43s , +20d 38m 58.8s) | C | 60 | 14.6 | 7753 | 2025-08-14 00:59:54 | MASTER-Kislovodsk | (22h 08m 04.95s , +22d 09m 44.1s) | C | 60 | 17.5 | 7753 | 2025-08-14 00:59:54 | MASTER- | (22h 03m 24.14s , +22d 31m 12.8s) | C | 60 | 14.4 | 7833 | 2025-08-14 01:01:13 | MASTER-Kislovodsk | (22h 10m 22.60s , +24d 03m 48.3s) | C | 60 | 17.5 | 7833 | 2025-08-14 01:01:13 | MASTER- | (22h 05m 34.23s , +24d 25m 32.9s) | C | 60 | 14.4 | 7913 | 2025-08-14 01:02:33 | MASTER- | (21h 53m 44.89s , +14d 56m 38.4s) | C | 60 | 14.1 | 7913 | 2025-08-14 01:02:33 | MASTER-Kislovodsk | (21h 58m 11.67s , +14d 35m 15.6s) | C | 60 | 17.0 | 7994 | 2025-08-14 01:03:55 | MASTER- | (22h 09m 28.81s , +14d 55m 32.4s) | C | 60 | 13.9 | 7994 | 2025-08-14 01:03:55 | MASTER-Kislovodsk | (22h 13m 54.14s , +14d 34m 16.2s) | C | 60 | 17.5 | 8074 | 2025-08-14 01:05:15 | MASTER- | (21h 46m 41.03s , +20d 37m 52.8s) | C | 60 | 14.3 | 8074 | 2025-08-14 01:05:15 | MASTER-Kislovodsk | (21h 51m 15.27s , +20d 16m 32.0s) | C | 60 | 17.1 | 8154 | 2025-08-14 01:06:34 | MASTER- | (22h 21m 35.69s , +16d 50m 51.6s) | C | 60 | 14.1 | 8154 | 2025-08-14 01:06:34 | MASTER-Kislovodsk | (22h 26m 07.61s , +16d 29m 17.7s) | C | 60 | 17.4 | 8234 | 2025-08-14 01:07:55 | MASTER-Kislovodsk | (22h 24m 28.05s , +22d 12m 04.6s) | C | 60 | 17.3 | 8234 | 2025-08-14 01:07:55 | MASTER- | (22h 19m 46.63s , +22d 33m 41.3s) | C | 60 | 14.3 | 8314 | 2025-08-14 01:09:14 | MASTER-Kislovodsk | (21h 51m 45.60s , +22d 09m 33.8s) | C | 60 | 17.0 | 8314 | 2025-08-14 01:09:14 | MASTER- | (21h 47m 05.50s , +22d 31m 20.4s) | C | 60 | 13.6 | 8394 | 2025-08-14 01:10:34 | MASTER-Kislovodsk | (21h 52m 05.11s , +18d 20m 33.4s) | C | 60 | 16.8 | 8394 | 2025-08-14 01:10:34 | MASTER- | (21h 47m 32.62s , +18d 41m 59.4s) | C | 60 | 13.9 | 8474 | 2025-08-14 01:11:54 | MASTER-Kislovodsk | (22h 10m 22.92s , +24d 03m 22.1s) | C | 60 | 17.0 | 8474 | 2025-08-14 01:11:54 | MASTER- | (22h 05m 38.34s , +24d 24m 55.7s) | C | 60 | 14.1 | 8553 | 2025-08-14 01:13:14 | MASTER- | (21h 53m 45.59s , +14d 55m 58.9s) | C | 60 | 13.6 | 8553 | 2025-08-14 01:13:14 | MASTER-Kislovodsk | (21h 58m 11.28s , +14d 34m 35.2s) | C | 60 | 16.3 | 8633 | 2025-08-14 01:14:34 | MASTER-Kislovodsk | (21h 54m 27.28s , +16d 26m 39.4s) | C | 60 | 16.2 | 8633 | 2025-08-14 01:14:34 | MASTER- | (21h 49m 58.89s , +16d 48m 04.0s) | C | 60 | 13.6 | 8713 | 2025-08-14 01:15:54 | MASTER- | (21h 46m 40.88s , +20d 37m 02.6s) | C | 60 | 13.6 | 8713 | 2025-08-14 01:15:54 | MASTER-Kislovodsk | (21h 51m 13.90s , +20d 15m 43.3s) | C | 60 | 16.4 | 8793 | 2025-08-14 01:17:14 | MASTER-Kislovodsk | (22h 40m 07.00s , +18d 23m 20.2s) | C | 60 | 16.7 | 8793 | 2025-08-14 01:17:14 | MASTER- | (22h 35m 33.87s , +18d 44m 52.4s) | C | 60 | 13.4 | 8873 | 2025-08-14 01:18:34 | MASTER- | (22h 19m 45.64s , +22d 33m 33.4s) | C | 60 | 12.9 | 8873 | 2025-08-14 01:18:34 | MASTER-Kislovodsk | (22h 24m 27.35s , +22d 11m 33.6s) | C | 60 | 16.5 | 8953 | 2025-08-14 01:19:54 | MASTER-Kislovodsk | (21h 51m 43.82s , +22d 08m 58.9s) | C | 60 | 16.2 | 8953 | 2025-08-14 01:19:54 | MASTER- | (21h 47m 06.12s , +22d 30m 11.7s) | C | 60 | 13.2 | 9032 | 2025-08-14 01:21:13 | MASTER-Kislovodsk | (21h 52m 03.47s , +18d 19m 58.8s) | C | 60 | 16.0 | 9032 | 2025-08-14 01:21:13 | MASTER- | (21h 47m 34.22s , +18d 41m 19.5s) | C | 60 | 13.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. View this GCN Circular online at https://gcn.nasa.gov/circulars/41374. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...