[vsnet-grb-info 41414] Fermi GRB 260104B: Global MASTER-Net observations report

TITLE: GCN CIRCULAR NUMBER: 43323 SUBJECT: Fermi GRB 260104B: Global MASTER-Net observations report DATE: 26/01/04 18:30:45 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 [1] located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 260104B ( Fermi GBM team, GCN 43316) errorbox 41510 sec after notice time and 41543 sec after trigger time at 2026-01-04 17:22:21 UT, with upper limit up to 16.9 mag. The observations began at zenith distance = 76 deg. The sun altitude is -38.2 deg. The galactic latitude b = -38 deg., longitude l = 231 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=3095661 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 2242 | 2026-01-04 06:26:49 | MASTER- | (04h 57m 27.88s , -27d 20m 35.2s) | C | 60 | 16.2 | 2311 | 2026-01-04 06:27:58 | MASTER- | (05h 06m 32.28s , -27d 20m 26.9s) | C | 60 | 15.5 | 2523 | 2026-01-04 06:31:30 | MASTER- | (04h 39m 55.89s , -27d 23m 49.4s) | C | 60 | 15.2 | 2666 | 2026-01-04 06:33:53 | MASTER- | (04h 52m 07.50s , -25d 29m 24.1s) | C | 60 | 16.5 | 2666 | 2026-01-04 06:33:53 | MASTER- | (04h 53m 11.08s , -26d 03m 29.8s) | C | 60 | 16.5 | 2736 | 2026-01-04 06:35:03 | MASTER- | (05h 01m 14.80s , -25d 28m 03.2s) | C | 60 | 16.9 | 2736 | 2026-01-04 06:35:03 | MASTER- | (05h 02m 18.57s , -26d 02m 09.0s) | C | 60 | 16.7 | 2808 | 2026-01-04 06:36:15 | MASTER- | (04h 52m 28.51s , -31d 45m 31.6s) | C | 60 | 16.2 | 2808 | 2026-01-04 06:36:15 | MASTER- | (04h 51m 23.06s , -31d 11m 26.1s) | C | 60 | 16.2 | 2878 | 2026-01-04 06:37:25 | MASTER- | (05h 00m 58.96s , -31d 08m 33.7s) | C | 60 | 16.7 | 2878 | 2026-01-04 06:37:25 | MASTER- | (05h 02m 04.41s , -31d 42m 39.1s) | C | 60 | 16.4 | 2948 | 2026-01-04 06:38:36 | MASTER- | (04h 57m 21.81s , -27d 22m 07.2s) | C | 60 | 17.0 | 3018 | 2026-01-04 06:39:45 | MASTER- | (05h 07m 35.96s , -27d 54m 01.5s) | C | 60 | 15.6 | 3229 | 2026-01-04 06:43:16 | MASTER- | (04h 40m 01.43s , -27d 26m 00.8s) | C | 60 | 13.6 | 3370 | 2026-01-04 06:45:37 | MASTER- | (04h 53m 12.96s , -26d 04m 26.6s) | C | 60 | 14.2 | 3440 | 2026-01-04 06:46:47 | MASTER- | (05h 02m 17.23s , -26d 01m 36.0s) | C | 60 | 14.9 | 3864 | 2026-01-04 06:53:51 | MASTER- | (04h 55m 49.13s , -29d 51m 20.9s) | C | 60 | 14.7 | 3934 | 2026-01-04 06:55:01 | MASTER- | (04h 41m 00.45s , -28d 01m 07.5s) | C | 60 | 15.3 | 5582 | 2026-01-04 07:22:29 | MASTER- | (04h 49m 02.68s , -27d 27m 05.8s) | C | 60 | 14.9 | 5722 | 2026-01-04 07:24:49 | MASTER- | (05h 02m 07.90s , -26d 07m 35.4s) | C | 60 | 15.9 | 5794 | 2026-01-04 07:26:01 | MASTER- | (04h 51m 20.48s , -31d 16m 47.1s) | C | 60 | 15.7 | 5871 | 2026-01-04 07:27:18 | MASTER- | (05h 01m 55.81s , -31d 48m 03.9s) | C | 60 | 15.6 | 5871 | 2026-01-04 07:27:18 | MASTER- | (05h 00m 51.97s , -31d 14m 17.1s) | C | 60 | 15.8 | 5941 | 2026-01-04 07:28:29 | MASTER- | (04h 58m 23.48s , -28d 02m 10.3s) | C | 60 | 15.6 | 5941 | 2026-01-04 07:28:29 | MASTER- | (04h 57m 21.23s , -27d 28m 23.1s) | C | 60 | 15.7 | 6011 | 2026-01-04 07:29:38 | MASTER- | (05h 07m 38.07s , -27d 59m 29.0s) | C | 60 | 15.8 | 6011 | 2026-01-04 07:29:38 | MASTER- | (05h 06m 35.66s , -27d 25m 41.7s) | C | 60 | 15.9 | 6225 | 2026-01-04 07:33:12 | MASTER- | (04h 39m 56.85s , -27d 30m 34.5s) | C | 60 | 15.5 | 6294 | 2026-01-04 07:34:21 | MASTER- | (04h 50m 03.23s , -28d 04m 16.2s) | C | 60 | 15.5 | 6294 | 2026-01-04 07:34:21 | MASTER- | (04h 49m 01.46s , -27d 30m 29.0s) | C | 60 | 15.6 | 6364 | 2026-01-04 07:35:31 | MASTER- | (04h 53m 11.10s , -26d 09m 47.5s) | C | 60 | 15.6 | 6364 | 2026-01-04 07:35:31 | MASTER- | (04h 52m 09.83s , -25d 36m 00.6s) | C | 60 | 15.7 | 6574 | 2026-01-04 07:39:01 | MASTER- | (05h 00m 52.79s , -31d 15m 18.7s) | C | 60 | 15.2 | 6715 | 2026-01-04 07:41:22 | MASTER- | (05h 06m 28.06s , -27d 26m 49.6s) | C | 60 | 15.8 | 7698 | 2026-01-04 07:57:45 | MASTER- | (04h 50m 05.69s , -28d 04m 34.9s) | C | 60 | 15.6 | 7768 | 2026-01-04 07:58:55 | MASTER- | (04h 53m 00.95s , -26d 11m 14.1s) | C | 60 | 15.9 | 7768 | 2026-01-04 07:58:55 | MASTER- | (04h 52m 00.40s , -25d 37m 26.0s) | C | 60 | 16.1 | 7838 | 2026-01-04 08:00:05 | MASTER- | (05h 02m 02.71s , -26d 09m 10.2s) | C | 60 | 16.2 | 41574 | 2026-01-04 17:22:21 | MASTER-Kislovodsk | (04h 50m 32.18s , -29d 17m 24.6s) | C | 60 | 16.5 | 41574 | 2026-01-04 17:22:21 | MASTER-Kislovodsk | (04h 45m 43.40s , -28d 54m 23.9s) | C | 60 | 16.0 | 41665 | 2026-01-04 17:23:52 | MASTER-Kislovodsk | (04h 51m 16.48s , -30d 47m 33.2s) | C | 60 | 15.9 | 41665 | 2026-01-04 17:23:52 | MASTER-Kislovodsk | (04h 56m 09.74s , -31d 10m 40.4s) | C | 60 | 16.4 | 41765 | 2026-01-04 17:25:32 | MASTER-Kislovodsk | (04h 40m 47.65s , -27d 00m 22.3s) | C | 60 | 16.1 | 41765 | 2026-01-04 17:25:32 | MASTER-Kislovodsk | (04h 45m 32.33s , -27d 23m 21.7s) | C | 60 | 16.6 | 41864 | 2026-01-04 17:27:11 | MASTER-Kislovodsk | (04h 42m 14.12s , -31d 12m 16.4s) | C | 60 | 16.5 | 41864 | 2026-01-04 17:27:11 | MASTER-Kislovodsk | (04h 37m 20.17s , -30d 49m 11.9s) | C | 60 | 16.0 | 41971 | 2026-01-04 17:28:58 | MASTER-Kislovodsk | (05h 04m 22.64s , -29d 18m 38.3s) | C | 60 | 16.5 | 41971 | 2026-01-04 17:28:58 | MASTER-Kislovodsk | (04h 59m 34.30s , -28d 55m 32.0s) | C | 60 | 16.1 | 42065 | 2026-01-04 17:30:32 | MASTER-Kislovodsk | (04h 32m 06.66s , -28d 53m 31.4s) | C | 60 | 16.1 | 42065 | 2026-01-04 17:30:32 | MASTER-Kislovodsk | (04h 36m 56.06s , -29d 16m 33.1s) | C | 60 | 16.7 | 42164 | 2026-01-04 17:32:11 | MASTER-Kislovodsk | (04h 48m 10.69s , -33d 06m 19.4s) | C | 60 | 16.7 | 42164 | 2026-01-04 17:32:11 | MASTER-Kislovodsk | (04h 43m 11.58s , -32d 43m 08.2s) | C | 60 | 16.0 | 42271 | 2026-01-04 17:33:58 | MASTER-Kislovodsk | (04h 54m 05.21s , -25d 28m 29.6s) | C | 60 | 16.7 | 42271 | 2026-01-04 17:33:58 | MASTER-Kislovodsk | (04h 49m 24.55s , -25d 05m 31.4s) | C | 60 | 16.3 | 43000 | 2026-01-04 17:46:07 | MASTER-Kislovodsk | (05h 02m 25.68s , -33d 04m 15.6s) | C | 60 | 16.2 | 43000 | 2026-01-04 17:46:07 | MASTER-Kislovodsk | (04h 57m 26.37s , -32d 41m 10.1s) | C | 60 | 15.7 | 43101 | 2026-01-04 17:47:48 | MASTER-Kislovodsk | (05h 05m 24.66s , -30d 48m 57.6s) | C | 60 | 16.0 | 43101 | 2026-01-04 17:47:48 | MASTER-Kislovodsk | (05h 10m 18.41s , -31d 12m 01.4s) | C | 60 | 16.4 | 43197 | 2026-01-04 17:49:24 | MASTER-Kislovodsk | (04h 23m 27.29s , -30d 47m 05.7s) | C | 60 | 16.3 | 43197 | 2026-01-04 17:49:24 | MASTER-Kislovodsk | (04h 28m 22.30s , -31d 10m 02.1s) | C | 60 | 16.4 | 43296 | 2026-01-04 17:51:03 | MASTER-Kislovodsk | (05h 07m 45.12s , -27d 01m 13.2s) | C | 60 | 16.3 | 43296 | 2026-01-04 17:51:03 | MASTER-Kislovodsk | (05h 12m 29.83s , -27d 24m 09.3s) | C | 60 | 16.9 | 43392 | 2026-01-04 17:52:39 | MASTER-Kislovodsk | (05h 02m 48.98s , -25d 05m 52.7s) | C | 60 | 16.4 | 43392 | 2026-01-04 17:52:39 | MASTER-Kislovodsk | (05h 07m 30.08s , -25d 28m 45.0s) | C | 60 | 16.9 | 43489 | 2026-01-04 17:54:16 | MASTER-Kislovodsk | (04h 28m 56.26s , -32d 41m 38.2s) | C | 60 | 16.1 | 43489 | 2026-01-04 17:54:16 | MASTER-Kislovodsk | (04h 33m 56.47s , -33d 04m 37.0s) | C | 60 | 16.8 | 43611 | 2026-01-04 17:56:18 | MASTER-Kislovodsk | (04h 45m 14.35s , -23d 12m 04.0s) | C | 60 | 16.5 | 43611 | 2026-01-04 17:56:18 | MASTER-Kislovodsk | (04h 49m 52.66s , -23d 34m 50.9s) | C | 60 | 16.9 | 43713 | 2026-01-04 17:58:00 | MASTER-Kislovodsk | (05h 13m 17.23s , -28d 55m 26.7s) | C | 60 | 15.9 | 43713 | 2026-01-04 17:58:00 | MASTER-Kislovodsk | (05h 18m 06.31s , -29d 18m 24.5s) | C | 60 | 16.5 | 43812 | 2026-01-04 17:59:39 | MASTER-Kislovodsk | (04h 18m 26.58s , -28d 53m 32.5s) | C | 60 | 16.5 | 43812 | 2026-01-04 17:59:39 | MASTER-Kislovodsk | (04h 23m 17.31s , -29d 16m 23.2s) | C | 60 | 16.7 | 43913 | 2026-01-04 18:01:20 | MASTER-Kislovodsk | (04h 23m 04.76s , -25d 05m 38.8s) | C | 60 | 16.4 | 43913 | 2026-01-04 18:01:20 | MASTER-Kislovodsk | (04h 27m 47.39s , -25d 28m 24.3s) | C | 60 | 16.7 | 44015 | 2026-01-04 18:03:02 | MASTER-Kislovodsk | (04h 58m 17.18s , -23d 12m 44.0s) | C | 60 | 16.5 | 44015 | 2026-01-04 18:03:02 | MASTER-Kislovodsk | (05h 02m 55.78s , -23d 35m 30.2s) | C | 60 | 16.9 | 44116 | 2026-01-04 18:04:43 | MASTER-Kislovodsk | (04h 49m 39.60s , -34d 36m 43.5s) | C | 60 | 16.3 | 44116 | 2026-01-04 18:04:43 | MASTER-Kislovodsk | (04h 54m 45.85s , -34d 59m 47.5s) | C | 60 | 16.6 | 44642 | 2026-01-04 18:13:29 | MASTER-Kislovodsk | (04h 35m 04.96s , -34d 37m 22.1s) | C | 60 | 16.2 | 44642 | 2026-01-04 18:13:29 | MASTER-Kislovodsk | (04h 40m 12.32s , -35d 00m 09.5s) | C | 60 | 16.5 | 44743 | 2026-01-04 18:15:10 | MASTER-Kislovodsk | (05h 11m 49.15s , -32d 42m 49.7s) | C | 60 | 15.9 | 44743 | 2026-01-04 18:15:10 | MASTER-Kislovodsk | (05h 16m 49.49s , -33d 05m 40.2s) | C | 60 | 16.3 | 44863 | 2026-01-04 18:17:10 | MASTER-Kislovodsk | (04h 32m 07.30s , -23d 10m 34.0s) | C | 60 | 16.6 | 44863 | 2026-01-04 18:17:10 | MASTER-Kislovodsk | (04h 36m 47.11s , -23d 33m 05.7s) | C | 60 | 16.9 | 44964 | 2026-01-04 18:18:51 | MASTER-Kislovodsk | (05h 04m 19.98s , -34d 35m 48.0s) | C | 60 | 15.1 | 44964 | 2026-01-04 18:18:51 | MASTER-Kislovodsk | (05h 09m 26.52s , -34d 58m 39.2s) | C | 60 | 15.5 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. [1] - V.M. Lipunov, V.G. Kornilov, E.S. Gorbovskoy, N.A. Tiurina & A.S.Kuznetsov, 2023, Astronomical Robotic Networks and Operative Multichanel Astrophysics, Lomonosov MSU PRESS, 591pp. http : // www.pereplet.ru/lipunov/625.html View this GCN Circular online at https://gcn.nasa.gov/circulars/43323. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...