TITLE: GCN CIRCULAR NUMBER: 36541 SUBJECT: Fermi trigger No 738330463: Global MASTER-Net observations report DATE: 24/05/25 19:30:40 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru> V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko, G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gress, N.M. Budnev, O.Ershova (Irkutsk State University, API), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich (Blagoveschensk Educational State University) 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 GRB240525.49 (trigger No 738330463,18h 41m 28.80s , +44d 32m 24.0s, R=8.29) errorbox 18334 sec after notice time and 18366 sec after trigger time at 2024-05-25 16:53:44 UT, with upper limit up to 19.5 mag. The observations began at zenith distance = 27 deg. The sun altitude is -17.9 deg. MASTER-Amur robotic telescope located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the Fermi GRB240525.49 errorbox 18881 sec after notice time and 18914 sec after trigger time at 2024-05-25 17:02:52 UT, with upper limit up to 17.4 mag. Observations started at twilight. The observations began at zenith distance = 12 deg. The sun altitude is -15.9 deg. The galactic latitude b = 20 deg., longitude l = 74 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2469992 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 18397 | 2024-05-25 16:53:44 | MASTER-Tunka | (18h 36m 03.77s , +44d 10m 47.2s) | C | 60 | 18.6 | 18397 | 2024-05-25 16:53:45 | MASTER-Tunka | (18h 37m 30.96s , +44d 52m 02.2s) | C | 60 | 19.5 | 18944 | 2024-05-25 17:02:52 | MASTER-Amur | (18h 13m 48.06s , +38d 57m 31.4s) | C | 60 | 16.8 | 18944 | 2024-05-25 17:02:52 | MASTER-Amur | (18h 23m 36.39s , +39d 19m 42.3s) | C | 60 | 14.9 | 19167 | 2024-05-25 17:06:35 | MASTER-Amur | (18h 37m 03.40s , +42d 46m 58.0s) | C | 60 | 17.1 | 19167 | 2024-05-25 17:06:35 | MASTER-Amur | (18h 47m 27.65s , +43d 09m 23.9s) | C | 60 | 15.2 | 19260 | 2024-05-25 17:08:08 | MASTER-Amur | (18h 51m 42.81s , +44d 42m 53.3s) | C | 60 | 17.3 | 19260 | 2024-05-25 17:08:08 | MASTER-Amur | (19h 02m 28.16s , +45d 05m 22.3s) | C | 60 | 12.6 | 19354 | 2024-05-25 17:09:41 | MASTER-Amur | (18h 46m 20.08s , +46d 35m 48.4s) | C | 60 | 17.3 | 19354 | 2024-05-25 17:09:41 | MASTER-Amur | (18h 57m 27.58s , +46d 58m 20.1s) | C | 60 | 15.4 | 19447 | 2024-05-25 17:11:14 | MASTER-Amur | (18h 24m 12.93s , +46d 35m 20.5s) | C | 60 | 17.1 | 19447 | 2024-05-25 17:11:14 | MASTER-Amur | (18h 35m 23.90s , +46d 58m 16.5s) | C | 60 | 15.0 | 19540 | 2024-05-25 17:12:48 | MASTER-Amur | (18h 57m 50.70s , +42d 48m 29.0s) | C | 60 | 17.1 | 19540 | 2024-05-25 17:12:48 | MASTER-Amur | (19h 08m 14.65s , +43d 10m 52.1s) | C | 60 | 15.0 | 19559 | 2024-05-25 17:13:07 | MASTER-Tunka | (18h 36m 00.43s , +44d 11m 04.1s) | C | 60 | 18.6 | 19560 | 2024-05-25 17:13:07 | MASTER-Tunka | (18h 37m 27.53s , +44d 52m 09.6s) | C | 60 | 19.4 | 19634 | 2024-05-25 17:14:21 | MASTER-Amur | (18h 44m 36.89s , +40d 52m 37.3s) | C | 60 | 16.8 | 19634 | 2024-05-25 17:14:21 | MASTER-Amur | (18h 54m 42.28s , +41d 14m 53.1s) | C | 60 | 14.8 | 19727 | 2024-05-25 17:15:55 | MASTER-Amur | (18h 42m 06.18s , +48d 28m 19.0s) | C | 60 | 16.7 | 19727 | 2024-05-25 17:15:55 | MASTER-Amur | (18h 53m 42.88s , +48d 51m 23.6s) | C | 60 | 14.9 | 19820 | 2024-05-25 17:17:28 | MASTER-Amur | (18h 19m 05.02s , +48d 28m 31.9s) | C | 60 | 17.1 | 19820 | 2024-05-25 17:17:28 | MASTER-Amur | (18h 30m 42.05s , +48d 51m 35.1s) | C | 60 | 15.1 | 19914 | 2024-05-25 17:19:01 | MASTER-Amur | (18h 13m 52.47s , +38d 56m 39.4s) | C | 60 | 17.1 | 19914 | 2024-05-25 17:19:01 | MASTER-Amur | (18h 23m 40.84s , +39d 18m 47.6s) | C | 60 | 15.2 | 20007 | 2024-05-25 17:20:34 | MASTER-Amur | (18h 16m 21.41s , +42d 46m 07.4s) | C | 60 | 17.4 | 20007 | 2024-05-25 17:20:34 | MASTER-Amur | (18h 26m 46.34s , +43d 08m 23.5s) | C | 60 | 15.0 | 20100 | 2024-05-25 17:22:08 | MASTER-Amur | (18h 37m 00.63s , +42d 46m 37.0s) | C | 60 | 17.3 | 20100 | 2024-05-25 17:22:08 | MASTER-Amur | (18h 47m 24.87s , +43d 08m 52.3s) | C | 60 | 15.3 | 20547 | 2024-05-25 17:29:34 | MASTER-Tunka | (18h 36m 07.62s , +44d 11m 53.4s) | C | 60 | 18.7 | 20547 | 2024-05-25 17:29:35 | MASTER-Tunka | (18h 37m 34.92s , +44d 52m 46.7s) | C | 60 | 19.5 | 20930 | 2024-05-25 17:35:57 | MASTER-Amur | (18h 52m 07.48s , +44d 38m 41.6s) | C | 60 | 17.0 | 20930 | 2024-05-25 17:35:57 | MASTER-Amur | (19h 02m 25.61s , +45d 02m 18.8s) | C | 60 | 13.2 | 21903 | 2024-05-25 17:52:11 | MASTER-Amur | (18h 46m 30.55s , +46d 32m 46.0s) | C | 60 | 16.7 | 21903 | 2024-05-25 17:52:11 | MASTER-Amur | (18h 57m 40.15s , +46d 55m 19.6s) | C | 60 | 14.7 | 21997 | 2024-05-25 17:53:44 | MASTER-Amur | (18h 25m 25.68s , +46d 21m 33.9s) | C | 60 | 14.8 | 21997 | 2024-05-25 17:53:44 | MASTER-Amur | (18h 36m 32.72s , +46d 46m 19.2s) | C | 60 | 16.5 | 22090 | 2024-05-25 17:55:18 | MASTER-Amur | (18h 58m 21.50s , +42d 42m 58.1s) | C | 60 | 17.0 | 22090 | 2024-05-25 17:55:18 | MASTER-Amur | (19h 08m 11.83s , +43d 06m 38.6s) | C | 60 | 14.8 | 22184 | 2024-05-25 17:56:51 | MASTER-Amur | (18h 45m 12.14s , +40d 49m 07.6s) | C | 60 | 16.9 | 22184 | 2024-05-25 17:56:51 | MASTER-Amur | (18h 54m 44.04s , +41d 12m 49.6s) | C | 60 | 14.7 | 22277 | 2024-05-25 17:58:24 | MASTER-Amur | (18h 53m 48.71s , +48d 48m 42.6s) | C | 60 | 14.8 | 22370 | 2024-05-25 17:59:58 | MASTER-Amur | (18h 31m 58.44s , +48d 38m 06.0s) | C | 60 | 16.7 | 22370 | 2024-05-25 17:59:58 | MASTER-Amur | (18h 20m 27.58s , +48d 13m 25.0s) | C | 60 | 14.9 | 22470 | 2024-05-25 18:01:37 | MASTER-Amur | (18h 23m 46.99s , +39d 08m 19.8s) | C | 60 | 16.9 | 22470 | 2024-05-25 18:01:37 | MASTER-Amur | (18h 13m 58.57s , +38d 43m 09.3s) | C | 60 | 15.1 | 22563 | 2024-05-25 18:03:11 | MASTER-Amur | (18h 27m 18.92s , +42d 57m 51.9s) | C | 60 | 17.0 | 22563 | 2024-05-25 18:03:11 | MASTER-Amur | (18h 16m 54.78s , +42d 32m 51.0s) | C | 60 | 15.1 | 22656 | 2024-05-25 18:04:44 | MASTER-Amur | (18h 48m 03.16s , +42d 57m 14.6s) | C | 60 | 16.9 | 22656 | 2024-05-25 18:04:44 | MASTER-Amur | (18h 37m 38.69s , +42d 32m 13.0s) | C | 60 | 14.8 | 22750 | 2024-05-25 18:06:17 | MASTER-Amur | (18h 52m 16.22s , +44d 37m 17.9s) | C | 60 | 17.0 | 22750 | 2024-05-25 18:06:17 | MASTER-Amur | (19h 02m 33.04s , +45d 01m 00.1s) | C | 60 | 14.9 | 22843 | 2024-05-25 18:07:51 | MASTER-Amur | (18h 46m 34.51s , +46d 32m 03.4s) | C | 60 | 16.6 | 22843 | 2024-05-25 18:07:51 | MASTER-Amur | (18h 57m 40.56s , +46d 54m 44.6s) | C | 60 | 14.7 | 22937 | 2024-05-25 18:09:24 | MASTER-Amur | (18h 36m 30.99s , +46d 45m 59.6s) | C | 60 | 16.7 | 22937 | 2024-05-25 18:09:24 | MASTER-Amur | (18h 25m 23.86s , +46d 21m 06.3s) | C | 60 | 14.8 | 23064 | 2024-05-25 18:11:32 | MASTER-Amur | (18h 58m 28.81s , +42d 41m 59.4s) | C | 60 | 16.5 | 23064 | 2024-05-25 18:11:32 | MASTER-Amur | (19h 08m 19.77s , +43d 06m 13.8s) | C | 60 | 15.0 | 23158 | 2024-05-25 18:13:05 | MASTER-Amur | (18h 55m 02.05s , +41d 03m 09.4s) | C | 60 | 16.4 | 23158 | 2024-05-25 18:13:05 | MASTER-Amur | (18h 44m 56.64s , +40d 37m 54.5s) | C | 60 | 14.5 | 23251 | 2024-05-25 18:14:39 | MASTER-Amur | (18h 55m 04.66s , +48d 38m 45.8s) | C | 60 | 16.3 | 23251 | 2024-05-25 18:14:39 | MASTER-Amur | (18h 43m 33.52s , +48d 14m 07.6s) | C | 60 | 14.3 | 23344 | 2024-05-25 18:16:12 | MASTER-Amur | (18h 32m 06.50s , +48d 39m 09.9s) | C | 60 | 15.0 | 26562 | 2024-05-25 19:09:50 | MASTER-Tunka | (18h 20m 16.19s , +39d 55m 15.3s) | C | 60 | 17.3 | 26563 | 2024-05-25 19:09:50 | MASTER-Tunka | (18h 18m 49.20s , +39d 16m 24.5s) | C | 60 | 15.4 | 27360 | 2024-05-25 19:23:07 | MASTER-Tunka | (18h 44m 26.11s , +43d 40m 28.5s) | C | 60 | 17.7 | 27449 | 2024-05-25 19:24:36 | MASTER-Tunka | (18h 59m 31.00s , +45d 33m 29.1s) | C | 60 | 18.1 | 27539 | 2024-05-25 19:26:07 | MASTER-Tunka | (18h 20m 19.98s , +39d 55m 48.0s) | C | 60 | 17.5 | 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/36541. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...