[vsnet-grb-info 38514] Fermi GRB 250516A: Global MASTER-Net observations report

TITLE: GCN CIRCULAR NUMBER: 40482 SUBJECT: Fermi GRB 250516A: Global MASTER-Net observations report DATE: 25/05/17 13:16:04 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-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 GRB 250516A ( Fermi GBM team, GCN 40466) errorbox 53236 sec after notice time and 53273 sec after trigger time at 2025-05-17 05:23:23 UT, with upper limit up to 19.8 mag. The observations began at zenith distance = 81 deg. The sun altitude is -73.4 deg.

The galactic latitude b = -43 deg., longitude l = 63 deg.

Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2872281

We obtain a following upper limits.

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

53354 | 2025-05-17 05:23:23 | MASTER-OAFA | (22h 08m 57.57s , -09d 53m 16.4s) | C | 160 | 16.3 | 54587 | 2025-05-17 05:43:56 | MASTER-OAFA | (22h 08m 53.80s , -09d 49m 35.9s) | C | 160 | 16.6 | 54724 | 2025-05-17 05:47:13 | MASTER-OAFA | (22h 08m 48.08s , -09d 50m 58.9s) | C | 40 | 16.7 | 55010 | 2025-05-17 05:50:59 | MASTER-OAFA | (22h 09m 00.15s , -09d 50m 43.3s) | C | 160 | 16.9 | 55020 | 2025-05-17 05:50:59 | MASTER-OAFA | (22h 19m 10.53s , -09d 28m 33.4s) | C | 180 | 15.5 | 55206 | 2025-05-17 05:54:15 | MASTER-OAFA | (22h 08m 57.96s , -09d 49m 01.8s) | C | 160 | 17.0 | 55216 | 2025-05-17 05:54:15 | MASTER-OAFA | (22h 19m 08.28s , -09d 26m 54.9s) | C | 180 | 16.0 | 55401 | 2025-05-17 05:57:30 | MASTER-OAFA | (22h 08m 58.20s , -09d 49m 52.9s) | C | 160 | 17.0 | 55411 | 2025-05-17 05:57:30 | MASTER-OAFA | (22h 19m 08.56s , -09d 27m 47.0s) | C | 180 | 16.7 | 55597 | 2025-05-17 06:00:46 | MASTER-OAFA | (22h 09m 01.12s , -09d 48m 33.7s) | C | 160 | 17.1 | 55607 | 2025-05-17 06:00:46 | MASTER-OAFA | (22h 19m 11.35s , -09d 26m 29.4s) | C | 180 | 16.9 | 56557 | 2025-05-17 06:16:46 | MASTER-OAFA | (22h 08m 55.08s , -09d 48m 15.8s) | C | 160 | 17.1 | 56568 | 2025-05-17 06:16:46 | MASTER-OAFA | (22h 19m 06.24s , -09d 26m 09.9s) | C | 180 | 17.9 | 56752 | 2025-05-17 06:20:01 | MASTER-OAFA | (22h 08m 57.37s , -09d 46m 58.3s) | C | 160 | 17.3 | 56763 | 2025-05-17 06:20:02 | MASTER-OAFA | (22h 19m 08.29s , -09d 24m 56.6s) | C | 180 | 18.0 | 56946 | 2025-05-17 06:23:15 | MASTER-OAFA | (22h 09m 01.40s , -09d 47m 45.6s) | C | 160 | 17.4 | 56956 | 2025-05-17 06:23:15 | MASTER-OAFA | (22h 19m 12.42s , -09d 25m 45.4s) | C | 180 | 18.3 | 57850 | 2025-05-17 06:39:19 | MASTER-OAFA | (22h 08m 51.04s , -09d 48m 32.1s) | C | 40 | 17.1 | 57860 | 2025-05-17 06:39:19 | MASTER-OAFA | (22h 18m 01.41s , -09d 25m 06.5s) | C | 60 | 18.3 | 58215 | 2025-05-17 06:44:23 | MASTER-OAFA | (22h 09m 03.18s , -09d 45m 55.1s) | C | 160 | 17.5 | 58225 | 2025-05-17 06:44:24 | MASTER-OAFA | (22h 19m 14.38s , -09d 23m 59.1s) | C | 180 | 18.8 | 59041 | 2025-05-17 06:59:10 | MASTER-OAFA | (22h 08m 45.76s , -09d 46m 30.8s) | C | 40 | 17.1 | 59051 | 2025-05-17 06:59:10 | MASTER-OAFA | (22h 17m 56.74s , -09d 23m 08.5s) | C | 60 | 18.5 | 59424 | 2025-05-17 07:04:33 | MASTER-OAFA | (22h 08m 56.48s , -09d 46m 31.6s) | C | 160 | 17.5 | 59434 | 2025-05-17 07:04:33 | MASTER-OAFA | (22h 19m 08.49s , -09d 24m 38.0s) | C | 180 | 18.9 | 60168 | 2025-05-17 07:17:57 | MASTER-OAFA | (22h 08m 45.17s , -09d 46m 41.0s) | C | 40 | 17.1 | 60179 | 2025-05-17 07:17:57 | MASTER-OAFA | (22h 17m 56.70s , -09d 23m 17.5s) | C | 60 | 18.7 | 60363 | 2025-05-17 07:21:11 | MASTER-OAFA | (22h 08m 48.12s , -09d 44m 50.5s) | C | 40 | 17.3 | 60373 | 2025-05-17 07:21:12 | MASTER-OAFA | (22h 17m 59.64s , -09d 21m 30.3s) | C | 60 | 18.9 | 60616 | 2025-05-17 07:24:25 | MASTER-OAFA | (22h 09m 03.10s , -09d 43m 57.6s) | C | 160 | 17.8 | 60626 | 2025-05-17 07:24:25 | MASTER-OAFA | (22h 19m 14.88s , -09d 21m 57.0s) | C | 180 | 19.1 | 62075 | 2025-05-17 07:48:44 | MASTER-OAFA | (22h 08m 55.13s , -09d 42m 54.6s) | C | 160 | 17.7 | 62086 | 2025-05-17 07:48:44 | MASTER-OAFA | (22h 19m 08.48s , -09d 20m 53.2s) | C | 180 | 19.3 | 62214 | 2025-05-17 07:52:02 | MASTER-OAFA | (22h 08m 49.30s , -09d 44m 23.1s) | C | 40 | 17.4 | 62224 | 2025-05-17 07:52:03 | MASTER-OAFA | (22h 18m 01.84s , -09d 20m 58.6s) | C | 60 | 19.2 | 63302 | 2025-05-17 08:09:10 | MASTER-OAFA | (22h 08m 57.42s , -09d 43m 55.7s) | C | 160 | 18.0 | 63312 | 2025-05-17 08:09:11 | MASTER-OAFA | (22h 19m 11.59s , -09d 21m 56.1s) | C | 180 | 19.6 | 65610 | 2025-05-17 08:47:39 | MASTER-OAFA | (22h 08m 55.02s , -09d 41m 06.6s) | C | 160 | 18.1 | 65620 | 2025-05-17 08:47:39 | MASTER-OAFA | (22h 19m 09.74s , -09d 19m 09.9s) | C | 180 | 19.6 | 66945 | 2025-05-17 09:09:53 | MASTER-OAFA | (22h 08m 56.20s , -09d 42m 17.9s) | C | 160 | 18.2 | 66955 | 2025-05-17 09:09:54 | MASTER-OAFA | (22h 19m 12.01s , -09d 20m 14.9s) | C | 180 | 19.8 | 68016 | 2025-05-17 09:28:45 | MASTER-OAFA | (21h 54m 48.23s , -07d 54m 13.2s) | C | 40 | 17.7 | 68155 | 2025-05-17 09:30:04 | MASTER-OAFA | (22h 27m 36.59s , -08d 43m 27.0s) | C | 160 | 18.4 | 68165 | 2025-05-17 09:30:04 | MASTER-OAFA | (22h 17m 17.92s , -09d 03m 28.4s) | C | 180 | 19.7 | 68957 | 2025-05-17 09:44:25 | MASTER-OAFA | (21h 54m 46.25s , -07d 53m 07.2s) | C | 40 | 17.7 | 69276 | 2025-05-17 09:49:45 | MASTER-OAFA | (22h 27m 06.28s , +01d 35m 10.8s) | C | 40 | 17.4 | 69286 | 2025-05-17 09:49:45 | MASTER-OAFA | (22h 17m 55.04s , +01d 12m 56.3s) | C | 60 | 18.7 | 69415 | 2025-05-17 09:51:03 | MASTER-OAFA | (22h 27m 35.48s , -08d 42m 28.0s) | C | 160 | 18.6 | 69425 | 2025-05-17 09:51:04 | MASTER-OAFA | (22h 17m 16.20s , -09d 02m 35.8s) | C | 180 | 19.7 | 69553 | 2025-05-17 09:54:21 | MASTER-OAFA | (22h 26m 50.43s , -00d 18m 25.4s) | C | 40 | 17.5 | 69563 | 2025-05-17 09:54:22 | MASTER-OAFA | (22h 17m 38.98s , -00d 40m 37.2s) | C | 60 | 19.2 | 69631 | 2025-05-17 09:55:39 | MASTER-OAFA | (22h 11m 55.19s , +01d 37m 25.6s) | C | 40 | 17.4 | 69641 | 2025-05-17 09:55:40 | MASTER-OAFA | (22h 02m 43.70s , +01d 15m 10.5s) | C | 60 | 19.4 | 69706 | 2025-05-17 09:56:55 | MASTER-OAFA | (22h 28m 42.02s , +03d 30m 10.0s) | C | 40 | 17.0 | 69716 | 2025-05-17 09:56:55 | MASTER-OAFA | (22h 19m 30.05s , +03d 07m 48.2s) | C | 60 | 18.1 | 69785 | 2025-05-17 09:58:14 | MASTER-OAFA | (22h 42m 12.03s , +01d 36m 43.5s) | C | 40 | 17.9 | 69795 | 2025-05-17 09:58:14 | MASTER-OAFA | (22h 33m 00.73s , +01d 14m 23.6s) | C | 60 | 19.3 | 69865 | 2025-05-17 09:59:33 | MASTER-OAFA | (22h 43m 22.31s , -02d 12m 22.6s) | C | 40 | 17.8 | 69875 | 2025-05-17 09:59:34 | MASTER-OAFA | (22h 34m 10.40s , -02d 34m 34.0s) | C | 60 | 19.3 | 69944 | 2025-05-17 10:00:52 | MASTER-OAFA | (22h 27m 01.19s , +01d 35m 18.5s) | C | 40 | 17.4 | 69954 | 2025-05-17 10:00:53 | MASTER-OAFA | (22h 17m 49.81s , +01d 12m 59.9s) | C | 60 | 18.8 | 70024 | 2025-05-17 10:02:12 | MASTER-OAFA | (22h 30m 55.45s , -04d 06m 35.7s) | C | 40 | 17.7 | 70034 | 2025-05-17 10:02:13 | MASTER-OAFA | (22h 21m 42.26s , -04d 28m 41.7s) | C | 60 | 19.2 | 70103 | 2025-05-17 10:03:31 | MASTER-OAFA | (22h 12m 53.62s , -02d 10m 32.8s) | C | 40 | 17.7 | 70113 | 2025-05-17 10:03:32 | MASTER-OAFA | (22h 03m 41.57s , -02d 32m 40.4s) | C | 60 | 19.3 | 70179 | 2025-05-17 10:04:48 | MASTER-OAFA | (22h 26m 50.63s , -00d 18m 22.6s) | C | 40 | 17.4 | 70189 | 2025-05-17 10:04:48 | MASTER-OAFA | (22h 17m 39.16s , -00d 40m 35.4s) | C | 60 | 19.0 | 70258 | 2025-05-17 10:06:07 | MASTER-OAFA | (22h 11m 54.89s , +01d 37m 38.1s) | C | 40 | 17.4 | 70268 | 2025-05-17 10:06:07 | MASTER-OAFA | (22h 02m 43.38s , +01d 15m 22.1s) | C | 60 | 19.3 | 70335 | 2025-05-17 10:07:24 | MASTER-OAFA | (22h 28m 43.22s , +03d 30m 23.6s) | C | 40 | 17.0 | 70346 | 2025-05-17 10:07:24 | MASTER-OAFA | (22h 19m 31.24s , +03d 08m 01.5s) | C | 60 | 18.1 | 70413 | 2025-05-17 10:08:42 | MASTER-OAFA | (22h 42m 12.23s , +01d 36m 55.4s) | C | 40 | 17.9 | 70423 | 2025-05-17 10:08:42 | MASTER-OAFA | (22h 33m 00.93s , +01d 14m 35.7s) | C | 60 | 19.3 | 70490 | 2025-05-17 10:09:59 | MASTER-OAFA | (22h 43m 21.90s , -02d 12m 10.0s) | C | 40 | 17.6 | 70500 | 2025-05-17 10:09:59 | MASTER-OAFA | (22h 34m 09.98s , -02d 34m 21.8s) | C | 60 | 19.1 | 70629 | 2025-05-17 10:11:18 | MASTER-OAFA | (22h 27m 33.04s , -08d 43m 51.9s) | C | 160 | 18.5 | 70639 | 2025-05-17 10:11:18 | MASTER-OAFA | (22h 17m 13.64s , -09d 04m 01.9s) | C | 180 | 19.6 | 70767 | 2025-05-17 10:14:36 | MASTER-OAFA | (22h 27m 07.09s , +01d 35m 50.2s) | C | 40 | 17.4 | 70777 | 2025-05-17 10:14:36 | MASTER-OAFA | (22h 17m 55.62s , +01d 13m 33.1s) | C | 60 | 18.7 | 70845 | 2025-05-17 10:15:54 | MASTER-OAFA | (22h 30m 52.15s , -04d 04m 48.9s) | C | 40 | 17.5 | 70856 | 2025-05-17 10:15:54 | MASTER-OAFA | (22h 21m 38.89s , -04d 26m 54.1s) | C | 60 | 19.0 | 70923 | 2025-05-17 10:17:12 | MASTER-OAFA | (22h 12m 53.74s , -02d 11m 39.7s) | C | 40 | 17.6 | 70933 | 2025-05-17 10:17:12 | MASTER-OAFA | (22h 03m 41.60s , -02d 33m 46.9s) | C | 60 | 19.3 | 70999 | 2025-05-17 10:18:28 | MASTER-OAFA | (22h 26m 52.97s , -00d 16m 47.4s) | C | 40 | 17.5 | 71009 | 2025-05-17 10:18:28 | MASTER-OAFA | (22h 17m 41.41s , -00d 38m 59.6s) | C | 60 | 19.0 | 71076 | 2025-05-17 10:19:44 | MASTER-OAFA | (22h 11m 47.30s , +01d 37m 17.4s) | C | 40 | 17.4 | 71086 | 2025-05-17 10:19:45 | MASTER-OAFA | (22h 02m 35.75s , +01d 15m 02.1s) | C | 60 | 19.0 | 71153 | 2025-05-17 10:21:02 | MASTER-OAFA | (22h 28m 42.63s , +03d 31m 39.9s) | C | 40 | 16.9 | 71164 | 2025-05-17 10:21:02 | MASTER-OAFA | (22h 19m 30.49s , +03d 09m 19.0s) | C | 60 | 17.9 | 71231 | 2025-05-17 10:22:20 | MASTER-OAFA | (22h 42m 19.67s , +01d 36m 09.6s) | C | 40 | 17.5 | 71241 | 2025-05-17 10:22:20 | MASTER-OAFA | (22h 33m 08.20s , +01d 13m 51.0s) | C | 60 | 18.7 | 71309 | 2025-05-17 10:23:38 | MASTER-OAFA | (22h 43m 15.76s , -02d 12m 56.3s) | C | 40 | 17.4 | 71319 | 2025-05-17 10:23:38 | MASTER-OAFA | (22h 34m 03.65s , -02d 35m 05.9s) | C | 60 | 18.8 | 71386 | 2025-05-17 10:24:55 | MASTER-OAFA | (22h 27m 07.17s , +01d 36m 13.3s) | C | 40 | 16.8 | 71396 | 2025-05-17 10:24:55 | MASTER-OAFA | (22h 17m 55.54s , +01d 13m 57.3s) | C | 60 | 18.3 | 71464 | 2025-05-17 10:26:13 | MASTER-OAFA | (22h 30m 52.43s , -04d 04m 36.5s) | C | 40 | 17.1 | 71475 | 2025-05-17 10:26:13 | MASTER-OAFA | (22h 21m 38.98s , -04d 26m 39.6s) | C | 60 | 18.5 | 71542 | 2025-05-17 10:27:31 | MASTER-OAFA | (22h 12m 53.84s , -02d 11m 34.0s) | C | 40 | 17.1 | 71552 | 2025-05-17 10:27:31 | MASTER-OAFA | (22h 03m 41.51s , -02d 33m 39.0s) | C | 60 | 18.5 | 71620 | 2025-05-17 10:28:49 | MASTER-OAFA | (22h 26m 53.05s , -00d 16m 22.4s) | C | 40 | 16.7 | 71631 | 2025-05-17 10:28:49 | MASTER-OAFA | (22h 17m 41.27s , -00d 38m 32.2s) | C | 60 | 18.3 | 71697 | 2025-05-17 10:30:06 | MASTER-OAFA | (22h 11m 49.08s , +01d 37m 28.1s) | C | 40 | 16.6 | 71708 | 2025-05-17 10:30:06 | MASTER-OAFA | (22h 02m 37.28s , +01d 15m 16.2s) | C | 60 | 18.3 | 71836 | 2025-05-17 10:31:25 | MASTER-OAFA | (22h 27m 34.11s , -08d 41m 29.1s) | C | 160 | 17.4 | 71974 | 2025-05-17 10:34:43 | MASTER-OAFA | (22h 28m 49.55s , +03d 30m 54.7s) | C | 40 | 15.9 | 72050 | 2025-05-17 10:35:59 | MASTER-OAFA | (22h 42m 11.99s , +01d 35m 23.8s) | C | 40 | 16.2 | 72127 | 2025-05-17 10:37:16 | MASTER-OAFA | (22h 43m 23.70s , -02d 12m 28.1s) | C | 40 | 16.0 | Filter C is a clear (unfiltred) band.

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

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