GCN Circular 45563
Subject
SVOM GRB260914.47: Global MASTER-Net observations report
Event
Date
2026-09-14T13:14:23Z (3 days ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
email
O.Gress, N.Budnev(ISU)
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 (Lomonosov MSU)
D.Buckley (SAAO),
A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity)
A.Sosnovskij (Lomonosov MSU)
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory)
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,
A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory)
R.Rebolo (The Instituto de Astrofisica de Canarias)
M. Segura, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA)
MASTER-Tunka robotic telescope [1] located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the SVOM GRB260914.47 (trigger No 1789384348,02h 06m 10.06s , +29d 15m 41.8s, R=0.1056) errorbox 3404 sec after notice time and 4587 sec after trigger time at 2026-09-14 12:28:55 UT, with upper limit up to 15.9 mag. Observations started at twilight. The observations began at zenith distance = 77 deg. The sun altitude is -10.5 deg.
The galactic latitude b = -30 deg., longitude l = 143 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=3503921
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
4588 | 2026-09-14 12:28:55 | MASTER-Tunka | (02h 03m 25.88s , +28d 51m 43.2s) | C | 1 | 15.5 |
4592 | 2026-09-14 12:28:58 | MASTER-Tunka | (02h 03m 25.83s , +28d 51m 44.1s) | C | 1 | 15.6 |
4597 | 2026-09-14 12:29:04 | MASTER-Tunka | (02h 03m 25.83s , +28d 51m 44.2s) | C | 1 | 15.6 |
4603 | 2026-09-14 12:29:09 | MASTER-Tunka | (02h 03m 25.79s , +28d 51m 44.2s) | C | 1 | 15.6 |
4608 | 2026-09-14 12:29:15 | MASTER-Tunka | (02h 03m 25.78s , +28d 51m 44.3s) | C | 1 | 15.5 |
4614 | 2026-09-14 12:29:20 | MASTER-Tunka | (02h 03m 25.76s , +28d 51m 45.1s) | C | 1 | 15.6 |
4620 | 2026-09-14 12:29:26 | MASTER-Tunka | (02h 03m 25.78s , +28d 51m 45.3s) | C | 1 | 15.6 |
4625 | 2026-09-14 12:29:32 | MASTER-Tunka | (02h 03m 25.77s , +28d 51m 45.0s) | C | 1 | 15.7 |
4631 | 2026-09-14 12:29:38 | MASTER-Tunka | (02h 03m 25.76s , +28d 51m 44.9s) | C | 1 | 15.7 |
4644 | 2026-09-14 12:29:51 | MASTER-Tunka | (02h 03m 25.81s , +28d 51m 45.1s) | C | 1 | 15.7 |
4650 | 2026-09-14 12:29:57 | MASTER-Tunka | (02h 03m 25.80s , +28d 51m 44.9s) | C | 1 | 15.7 |
4656 | 2026-09-14 12:30:02 | MASTER-Tunka | (02h 03m 25.81s , +28d 51m 44.4s) | C | 1 | 15.7 |
4662 | 2026-09-14 12:30:08 | MASTER-Tunka | (02h 03m 25.85s , +28d 51m 44.4s) | C | 1 | 15.7 |
4668 | 2026-09-14 12:30:14 | MASTER-Tunka | (02h 03m 25.77s , +28d 51m 44.3s) | C | 1 | 15.8 |
4673 | 2026-09-14 12:30:20 | MASTER-Tunka | (02h 03m 25.81s , +28d 51m 44.5s) | C | 1 | 15.9 |
4679 | 2026-09-14 12:30:25 | MASTER-Tunka | (02h 03m 25.79s , +28d 51m 44.0s) | C | 1 | 15.9 |
4684 | 2026-09-14 12:30:31 | MASTER-Tunka | (02h 03m 25.80s , +28d 51m 43.5s) | C | 1 | 15.7 |
4690 | 2026-09-14 12:30:36 | MASTER-Tunka | (02h 03m 25.79s , +28d 51m 43.8s) | C | 1 | 15.8 |
4696 | 2026-09-14 12:30:42 | MASTER-Tunka | (02h 03m 25.76s , +28d 51m 43.4s) | C | 1 | 15.8 |
4701 | 2026-09-14 12:30:48 | MASTER-Tunka | (02h 03m 25.72s , +28d 51m 43.8s) | C | 1 | 15.8 |
4707 | 2026-09-14 12:30:53 | MASTER-Tunka | (02h 03m 25.76s , +28d 51m 43.9s) | C | 1 | 15.8 |
4712 | 2026-09-14 12:30:59 | MASTER-Tunka | (02h 03m 25.76s , +28d 51m 43.3s) | C | 1 | 15.8 |
4718 | 2026-09-14 12:31:04 | MASTER-Tunka | (02h 03m 25.74s , +28d 51m 42.9s) | C | 1 | 15.9 |
4723 | 2026-09-14 12:31:10 | MASTER-Tunka | (02h 03m 25.75s , +28d 51m 43.0s) | C | 1 | 15.8 |
4729 | 2026-09-14 12:31:15 | MASTER-Tunka | (02h 03m 25.75s , +28d 51m 42.6s) | C | 1 | 15.9 |
4734 | 2026-09-14 12:31:21 | MASTER-Tunka | (02h 03m 25.72s , +28d 51m 43.2s) | C | 1 | 15.9 |
4740 | 2026-09-14 12:31:27 | MASTER-Tunka | (02h 03m 25.73s , +28d 51m 43.5s) | C | 1 | 15.9 |
4746 | 2026-09-14 12:31:32 | MASTER-Tunka | (02h 03m 25.74s , +28d 51m 43.2s) | C | 1 | 15.9 |
4751 | 2026-09-14 12:31:38 | MASTER-Tunka | (02h 03m 25.68s , +28d 51m 43.2s) | C | 1 | 15.8 |
4772 | 2026-09-14 12:31:58 | MASTER-Tunka | (02h 03m 31.34s , +28d 50m 42.5s) | C | 1 | 15.8 |
4776 | 2026-09-14 12:32:02 | MASTER-Tunka | (02h 03m 31.36s , +28d 50m 42.8s) | C | 1 | 15.9 |
4781 | 2026-09-14 12:32:08 | MASTER-Tunka | (02h 03m 31.37s , +28d 50m 42.5s) | C | 1 | 15.8 |
4787 | 2026-09-14 12:32:13 | MASTER-Tunka | (02h 03m 31.34s , +28d 50m 42.2s) | C | 1 | 15.8 |
4793 | 2026-09-14 12:32:19 | MASTER-Tunka | (02h 03m 31.34s , +28d 50m 41.7s) | C | 1 | 15.9 |
4798 | 2026-09-14 12:32:25 | MASTER-Tunka | (02h 03m 31.33s , +28d 50m 42.3s) | C | 1 | 15.9 |
4804 | 2026-09-14 12:32:31 | MASTER-Tunka | (02h 03m 31.33s , +28d 50m 41.5s) | C | 1 | 15.9 |
4810 | 2026-09-14 12:32:36 | MASTER-Tunka | (02h 03m 31.36s , +28d 50m 41.4s) | C | 1 | 15.9 |
4816 | 2026-09-14 12:32:42 | MASTER-Tunka | (02h 03m 31.31s , +28d 50m 41.4s) | C | 1 | 15.9 |
4821 | 2026-09-14 12:32:48 | MASTER-Tunka | (02h 03m 31.31s , +28d 50m 41.5s) | C | 1 | 15.9 |
4827 | 2026-09-14 12:32:54 | MASTER-Tunka | (02h 03m 31.34s , +28d 50m 41.6s) | C | 1 | 15.9 |
4833 | 2026-09-14 12:32:59 | MASTER-Tunka | (02h 03m 31.31s , +28d 50m 41.2s) | C | 1 | 15.9 |
4838 | 2026-09-14 12:33:05 | MASTER-Tunka | (02h 03m 31.34s , +28d 50m 41.3s) | C | 1 | 15.9 |
4844 | 2026-09-14 12:33:10 | MASTER-Tunka | (02h 03m 31.29s , +28d 50m 41.1s) | C | 1 | 15.9 |
4850 | 2026-09-14 12:33:16 | MASTER-Tunka | (02h 03m 31.31s , +28d 50m 41.0s) | C | 1 | 15.8 |
4856 | 2026-09-14 12:33:23 | MASTER-Tunka | (02h 03m 31.29s , +28d 50m 40.2s) | C | 1 | 15.8 |
4864 | 2026-09-14 12:33:30 | MASTER-Tunka | (02h 03m 31.28s , +28d 50m 40.5s) | C | 1 | 15.8 |
4870 | 2026-09-14 12:33:36 | MASTER-Tunka | (02h 03m 31.25s , +28d 50m 40.4s) | C | 1 | 15.9 |
4875 | 2026-09-14 12:33:42 | MASTER-Tunka | (02h 03m 31.26s , +28d 50m 40.7s) | C | 1 | 15.9 |
4882 | 2026-09-14 12:33:49 | MASTER-Tunka | (02h 03m 31.25s , +28d 50m 41.0s) | C | 1 | 15.9 |
4888 | 2026-09-14 12:33:54 | MASTER-Tunka | (02h 03m 31.27s , +28d 50m 41.0s) | C | 1 | 15.8 |
4893 | 2026-09-14 12:34:00 | MASTER-Tunka | (02h 03m 31.24s , +28d 50m 40.8s) | C | 1 | 15.9 |
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