[vsnet-grb-info 40547] Fermi GRB 251025C: Global MASTER-Net observations report

TITLE: GCN CIRCULAR NUMBER: 42463 SUBJECT: Fermi GRB 251025C: Global MASTER-Net observations report DATE: 25/10/27 01:31:01 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 GRB 251025C ( Fermi GBM team, GCN 42449) errorbox 1 days 5134 sec after notice time and 1 days 5165 sec after trigger time at 2025-10-27 00:34:45 UT, with upper limit up to 18.6 mag. The observations began at zenith distance = 53 deg. The sun altitude is -33.9 deg. The galactic latitude b = 58 deg., longitude l = 147 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=3023716 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 91596 | 2025-10-27 00:34:45 | MASTER-Kislovodsk | (11h 18m 11.77s , +54d 29m 42.9s) | C | 60 | 18.3 | 91596 | 2025-10-27 00:34:45 | MASTER-Kislovodsk | (11h 25m 08.42s , +54d 06m 43.1s) | C | 60 | 18.5 | 91675 | 2025-10-27 00:36:05 | MASTER-Kislovodsk | (11h 31m 25.80s , +55d 59m 16.1s) | C | 60 | 18.3 | 91675 | 2025-10-27 00:36:05 | MASTER-Kislovodsk | (11h 24m 10.23s , +56d 22m 21.0s) | C | 60 | 18.1 | 91755 | 2025-10-27 00:37:25 | MASTER-Kislovodsk | (11h 20m 02.72s , +52d 12m 24.9s) | C | 60 | 18.6 | 91755 | 2025-10-27 00:37:25 | MASTER-Kislovodsk | (11h 13m 24.71s , +52d 35m 17.4s) | C | 60 | 18.6 | 91835 | 2025-10-27 00:38:45 | MASTER-Kislovodsk | (11h 44m 17.61s , +54d 29m 12.9s) | C | 60 | 18.1 | 91835 | 2025-10-27 00:38:45 | MASTER-Kislovodsk | (11h 51m 11.39s , +54d 06m 05.0s) | C | 60 | 18.3 | 91916 | 2025-10-27 00:40:05 | MASTER-Kislovodsk | (11h 38m 20.05s , +52d 33m 52.5s) | C | 60 | 18.1 | 91996 | 2025-10-27 00:41:25 | MASTER-Kislovodsk | (11h 31m 44.37s , +58d 17m 35.7s) | C | 60 | 18.1 | 91996 | 2025-10-27 00:41:25 | MASTER-Kislovodsk | (11h 39m 22.93s , +57d 54m 25.4s) | C | 60 | 18.3 | 92236 | 2025-10-27 00:45:26 | MASTER-Kislovodsk | (11h 18m 07.62s , +54d 29m 57.0s) | C | 60 | 18.3 | 92236 | 2025-10-27 00:45:26 | MASTER-Kislovodsk | (11h 25m 08.02s , +54d 06m 32.4s) | C | 60 | 18.3 | 92316 | 2025-10-27 00:46:46 | MASTER-Kislovodsk | (11h 24m 08.47s , +56d 22m 38.2s) | C | 60 | 18.1 | 92316 | 2025-10-27 00:46:46 | MASTER-Kislovodsk | (11h 31m 24.36s , +55d 59m 08.8s) | C | 60 | 18.3 | 92396 | 2025-10-27 00:48:06 | MASTER-Kislovodsk | (11h 13m 23.20s , +52d 35m 54.1s) | C | 60 | 18.6 | 92396 | 2025-10-27 00:48:06 | MASTER-Kislovodsk | (11h 20m 01.70s , +52d 12m 36.7s) | C | 60 | 18.6 | 92476 | 2025-10-27 00:49:26 | MASTER-Kislovodsk | (11h 44m 17.35s , +54d 29m 36.7s) | C | 60 | 18.0 | 92476 | 2025-10-27 00:49:26 | MASTER-Kislovodsk | (11h 51m 11.53s , +54d 06m 03.7s) | C | 60 | 18.2 | 92556 | 2025-10-27 00:50:46 | MASTER-Kislovodsk | (11h 38m 19.67s , +52d 34m 11.0s) | C | 60 | 18.2 | 92644 | 2025-10-27 00:52:13 | MASTER-Kislovodsk | (11h 31m 43.71s , +58d 18m 05.9s) | C | 60 | 18.1 | 92644 | 2025-10-27 00:52:13 | MASTER-Kislovodsk | (11h 39m 22.66s , +57d 54m 30.1s) | C | 60 | 18.3 | 92890 | 2025-10-27 00:56:20 | MASTER-Kislovodsk | (11h 18m 04.46s , +54d 30m 35.0s) | C | 60 | 18.3 | 92890 | 2025-10-27 00:56:20 | MASTER-Kislovodsk | (11h 25m 08.64s , +54d 07m 10.4s) | C | 60 | 18.3 | 92970 | 2025-10-27 00:57:40 | MASTER-Kislovodsk | (11h 24m 09.70s , +56d 23m 16.5s) | C | 60 | 18.1 | 92970 | 2025-10-27 00:57:40 | MASTER-Kislovodsk | (11h 31m 27.23s , +55d 59m 48.2s) | C | 60 | 18.1 | 93050 | 2025-10-27 00:58:59 | MASTER-Kislovodsk | (11h 13m 21.24s , +52d 36m 14.7s) | C | 60 | 18.5 | 93050 | 2025-10-27 00:58:59 | MASTER-Kislovodsk | (11h 20m 01.17s , +52d 12m 57.7s) | C | 60 | 18.4 | 93129 | 2025-10-27 01:00:19 | MASTER-Kislovodsk | (11h 44m 15.91s , +54d 29m 56.6s) | C | 60 | 18.1 | 93129 | 2025-10-27 01:00:19 | MASTER-Kislovodsk | (11h 51m 11.44s , +54d 06m 23.7s) | C | 60 | 18.2 | 93210 | 2025-10-27 01:01:40 | MASTER-Kislovodsk | (11h 38m 18.17s , +52d 35m 14.3s) | C | 60 | 18.1 | 93290 | 2025-10-27 01:02:59 | MASTER-Kislovodsk | (11h 31m 44.06s , +58d 18m 37.3s) | C | 60 | 18.2 | 93290 | 2025-10-27 01:02:59 | MASTER-Kislovodsk | (11h 39m 24.39s , +57d 55m 02.7s) | C | 60 | 18.3 | 93533 | 2025-10-27 01:07:03 | MASTER-Kislovodsk | (11h 18m 02.58s , +54d 31m 12.2s) | C | 60 | 18.2 | 93533 | 2025-10-27 01:07:03 | MASTER-Kislovodsk | (11h 25m 08.82s , +54d 07m 52.0s) | C | 60 | 18.3 | 93613 | 2025-10-27 01:08:23 | MASTER-Kislovodsk | (11h 24m 07.26s , +56d 23m 53.1s) | C | 60 | 18.1 | 93613 | 2025-10-27 01:08:23 | MASTER-Kislovodsk | (11h 31m 26.30s , +56d 00m 29.1s) | C | 60 | 18.3 | 93693 | 2025-10-27 01:09:43 | MASTER-Kislovodsk | (11h 13m 21.14s , +52d 37m 05.7s) | C | 60 | 18.6 | 93693 | 2025-10-27 01:09:43 | MASTER-Kislovodsk | (11h 20m 02.47s , +52d 13m 53.0s) | C | 60 | 18.6 | 93793 | 2025-10-27 01:11:23 | MASTER-Kislovodsk | (11h 44m 13.86s , +54d 30m 52.5s) | C | 60 | 18.1 | 93793 | 2025-10-27 01:11:23 | MASTER-Kislovodsk | (11h 51m 10.90s , +54d 07m 24.6s) | C | 60 | 18.1 | 93879 | 2025-10-27 01:12:49 | MASTER-Kislovodsk | (11h 38m 18.19s , +52d 35m 51.5s) | C | 60 | 18.1 | 93959 | 2025-10-27 01:14:09 | MASTER-Kislovodsk | (11h 31m 42.25s , +58d 19m 32.6s) | C | 60 | 18.1 | 93959 | 2025-10-27 01:14:09 | MASTER-Kislovodsk | (11h 39m 23.62s , +57d 56m 04.3s) | C | 60 | 18.4 | 94399 | 2025-10-27 01:21:29 | MASTER-Kislovodsk | (11h 17m 59.49s , +54d 30m 58.7s) | C | 60 | 18.4 | 94399 | 2025-10-27 01:21:29 | MASTER-Kislovodsk | (11h 25m 03.05s , +54d 07m 53.1s) | C | 60 | 18.3 | 94478 | 2025-10-27 01:22:48 | MASTER-Kislovodsk | (11h 24m 10.99s , +56d 25m 08.0s) | C | 60 | 18.2 | 94478 | 2025-10-27 01:22:48 | MASTER-Kislovodsk | (11h 31m 32.09s , +56d 01m 57.7s) | C | 60 | 18.3 | 94558 | 2025-10-27 01:24:08 | MASTER-Kislovodsk | (11h 13m 15.55s , +52d 39m 26.4s) | C | 60 | 18.6 | 94558 | 2025-10-27 01:24:08 | MASTER-Kislovodsk | (11h 19m 58.90s , +52d 16m 26.6s) | C | 60 | 18.5 | 94640 | 2025-10-27 01:25:30 | MASTER-Kislovodsk | (11h 44m 14.15s , +54d 30m 13.3s) | C | 60 | 18.1 | 94640 | 2025-10-27 01:25:30 | MASTER-Kislovodsk | (11h 51m 12.53s , +54d 06m 56.7s) | C | 60 | 18.4 | 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/42463. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...