[vsnet-grb-info 43733] EP Alert 260903.62: Global MASTER-Net observations report

TITLE: GCN CIRCULAR NUMBER: 45512 SUBJECT: EP Alert 260903.62: Global MASTER-Net observations report DATE: 26/09/04 06:54:44 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru> 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 (CrAO RAS) 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 EP Alert 260903.62 (trigger No 1788446808,01h 42m 38.74s , +11d 22m 10.6s, R=0.5) errorbox 1399 sec after trigger time at 2026-09-03 15:10:07 UT, with upper limit up to 18.8 mag. The observations began at zenith distance = 70 deg. The sun altitude is -25.7 deg. MASTER-Tavrida robotic telescope located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the EP Alert 260903.62 errorbox 33005 sec after trigger time at 2026-09-03 23:56:53 UT, with upper limit up to 18.0 mag. The observations began at zenith distance = 34 deg. The sun altitude is -29.7 deg. The galactic latitude b = -49 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=3498859 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 1429 | 2026-09-03 15:10:07 | MASTER-Tunka | (01h 39m 56.83s , +10d 45m 37.2s) | C | 60 | 13.9 | 1502 | 2026-09-03 15:11:19 | MASTER-Tunka | (01h 40m 02.09s , +10d 45m 48.3s) | C | 60 | 16.4 | 1577 | 2026-09-03 15:12:35 | MASTER-Tunka | (01h 39m 58.94s , +10d 47m 16.3s) | C | 60 | 16.9 | 1653 | 2026-09-03 15:13:51 | MASTER-Tunka | (01h 39m 59.00s , +10d 45m 42.4s) | C | 60 | 16.0 | 1727 | 2026-09-03 15:15:04 | MASTER-Tunka | (01h 40m 01.06s , +10d 47m 25.9s) | C | 60 | 16.3 | 1801 | 2026-09-03 15:16:19 | MASTER-Tunka | (01h 39m 55.32s , +10d 46m 25.1s) | C | 60 | 16.9 | 1908 | 2026-09-03 15:18:05 | MASTER-Tunka | (01h 39m 55.09s , +10d 47m 22.5s) | C | 60 | 16.9 | 1988 | 2026-09-03 15:19:25 | MASTER-Tunka | (01h 40m 02.37s , +10d 46m 21.1s) | C | 60 | 17.3 | 2065 | 2026-09-03 15:20:43 | MASTER-Tunka | (01h 39m 56.82s , +10d 45m 15.9s) | C | 60 | 16.5 | 2144 | 2026-09-03 15:22:01 | MASTER-Tunka | (01h 40m 01.29s , +10d 45m 27.8s) | C | 60 | 17.6 | 2190 | 2026-09-03 15:22:48 | MASTER-Tunka | (01h 39m 59.00s , +10d 46m 53.3s) | C | 60 | 18.0 | 2263 | 2026-09-03 15:24:01 | MASTER-Tunka | (01h 39m 58.96s , +10d 45m 21.6s) | C | 60 | 17.4 | 2338 | 2026-09-03 15:25:16 | MASTER-Tunka | (01h 40m 02.07s , +10d 47m 05.4s) | C | 60 | 17.2 | 2411 | 2026-09-03 15:26:28 | MASTER-Tunka | (01h 39m 55.16s , +10d 46m 05.9s) | C | 60 | 17.8 | 2484 | 2026-09-03 15:27:41 | MASTER-Tunka | (01h 39m 56.15s , +10d 47m 03.1s) | C | 60 | 17.1 | 2558 | 2026-09-03 15:28:56 | MASTER-Tunka | (01h 40m 02.39s , +10d 46m 01.4s) | C | 60 | 17.6 | 2631 | 2026-09-03 15:30:08 | MASTER-Tunka | (01h 39m 55.93s , +10d 44m 58.5s) | C | 60 | 17.2 | 2703 | 2026-09-03 15:31:21 | MASTER-Tunka | (01h 40m 00.97s , +10d 45m 24.5s) | C | 60 | 17.5 | 2778 | 2026-09-03 15:32:36 | MASTER-Tunka | (01h 39m 58.90s , +10d 46m 27.8s) | C | 60 | 18.3 | 2851 | 2026-09-03 15:33:49 | MASTER-Tunka | (01h 39m 58.86s , +10d 44m 58.2s) | C | 60 | 18.1 | 2924 | 2026-09-03 15:35:01 | MASTER-Tunka | (01h 40m 02.87s , +10d 46m 32.3s) | C | 60 | 17.0 | 3031 | 2026-09-03 15:36:48 | MASTER-Tunka | (01h 39m 55.80s , +10d 45m 47.7s) | C | 60 | 17.4 | 3110 | 2026-09-03 15:38:07 | MASTER-Tunka | (01h 39m 56.49s , +10d 46m 44.1s) | C | 60 | 18.1 | 3155 | 2026-09-03 15:38:53 | MASTER-Tunka | (01h 40m 01.47s , +10d 45m 43.1s) | C | 60 | 18.1 | 3263 | 2026-09-03 15:40:41 | MASTER-Tunka | (01h 39m 55.52s , +10d 44m 39.4s) | C | 60 | 18.2 | 3342 | 2026-09-03 15:41:59 | MASTER-Tunka | (01h 40m 02.63s , +10d 44m 49.8s) | C | 60 | 18.8 | 3420 | 2026-09-03 15:43:17 | MASTER-Tunka | (01h 39m 58.80s , +10d 46m 16.3s) | C | 60 | 18.3 | 3465 | 2026-09-03 15:44:03 | MASTER-Tunka | (01h 39m 58.83s , +10d 44m 53.9s) | C | 60 | 18.1 | 3536 | 2026-09-03 15:45:14 | MASTER-Tunka | (01h 40m 01.35s , +10d 46m 05.4s) | C | 60 | 18.3 | 3610 | 2026-09-03 15:46:28 | MASTER-Tunka | (01h 39m 55.82s , +10d 45m 27.4s) | C | 60 | 18.2 | 33036 | 2026-09-03 23:56:53 | MASTER-Tavrida | (01h 42m 02.94s , +11d 16m 34.4s) | C | 60 | 18.0 | 33036 | 2026-09-03 23:56:53 | MASTER-Tavrida | (01h 42m 06.31s , +11d 16m 21.4s) | C | 60 | 17.3 | 33106 | 2026-09-03 23:58:04 | MASTER-Tavrida | (01h 42m 04.01s , +11d 14m 30.9s) | C | 60 | 17.0 | 33128 | 2026-09-03 23:58:25 | MASTER-Tavrida | (01h 42m 07.38s , +11d 14m 16.8s) | C | 60 | 17.1 | 33179 | 2026-09-03 23:59:16 | MASTER-Tavrida | (01h 42m 10.39s , +11d 14m 53.9s) | C | 60 | 17.5 | 33846 | 2026-09-04 00:09:54 | MASTER-Tavrida | (01h 42m 07.05s , +11d 15m 32.1s) | C | 120 | 17.1 | 33846 | 2026-09-04 00:09:54 | MASTER-Tavrida | (01h 42m 10.32s , +11d 15m 17.4s) | C | 120 | 17.3 | 33978 | 2026-09-04 00:12:06 | MASTER-Tavrida | (01h 42m 07.15s , +11d 13m 55.6s) | C | 120 | 17.3 | 33978 | 2026-09-04 00:12:06 | MASTER-Tavrida | (01h 42m 10.36s , +11d 13m 41.1s) | C | 120 | 17.4 | 34184 | 2026-09-04 00:15:32 | MASTER-Tavrida | (01h 42m 03.25s , +11d 15m 47.0s) | C | 120 | 17.3 | 34184 | 2026-09-04 00:15:32 | MASTER-Tavrida | (01h 42m 06.48s , +11d 15m 33.0s) | C | 120 | 17.3 | 34318 | 2026-09-04 00:17:45 | MASTER-Tavrida | (01h 42m 10.82s , +11d 14m 41.8s) | C | 120 | 17.0 | 34318 | 2026-09-04 00:17:46 | MASTER-Tavrida | (01h 42m 14.05s , +11d 14m 27.8s) | C | 120 | 17.2 | 34451 | 2026-09-04 00:19:58 | MASTER-Tavrida | (01h 42m 13.92s , +11d 13m 41.7s) | C | 120 | 16.7 | 34444 | 2026-09-04 00:20:22 | MASTER-Tavrida | (01h 42m 10.69s , +11d 13m 56.4s) | C | 60 | 16.5 | 35075 | 2026-09-04 00:30:53 | MASTER-Tavrida | (01h 42m 07.42s , +11d 14m 45.6s) | C | 60 | 12.5 | 35075 | 2026-09-04 00:30:53 | MASTER-Tavrida | (01h 42m 10.60s , +11d 14m 31.5s) | C | 60 | 12.3 | 35147 | 2026-09-04 00:32:04 | MASTER-Tavrida | (01h 42m 10.36s , +11d 15m 00.9s) | C | 60 | 13.1 | 35167 | 2026-09-04 00:32:24 | MASTER-Tavrida | (01h 42m 13.57s , +11d 14m 46.8s) | C | 60 | 12.5 | 35218 | 2026-09-04 00:33:15 | MASTER-Tavrida | (01h 42m 04.87s , +11d 14m 05.6s) | C | 60 | 14.1 | 35847 | 2026-09-04 00:43:44 | MASTER-Tavrida | (01h 42m 05.14s , +11d 14m 40.7s) | C | 60 | 15.2 | 35847 | 2026-09-04 00:43:45 | MASTER-Tavrida | (01h 42m 08.34s , +11d 14m 27.5s) | C | 60 | 15.4 | 35920 | 2026-09-04 00:44:57 | MASTER-Tavrida | (01h 42m 08.26s , +11d 12m 23.9s) | C | 60 | 13.7 | 35941 | 2026-09-04 00:45:18 | MASTER-Tavrida | (01h 42m 05.04s , +11d 12m 36.7s) | C | 60 | 13.8 | 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/45512. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...