GCN Circular 46286
Subject
EP261115a: Global MASTER-Net observations report
Event
Date
2026-11-15T03:18:38Z (11 hours ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
email
M. Segura, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA)
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)
O.Gress, N.Budnev(ISU)
MASTER-OAFA robotic telescope [1] located in Argentina (OAFA observatory of San Juan National University) was pointed to the EP261115a ( EP Team at NAOC/CAS <ep_ta@bao.ac.cn> et al., GCN 46282) errorbox 52 sec after notice time and 3714 sec after trigger time at 2026-11-15 01:24:08 UT, with upper limit up to 20.8 mag. The observations began at zenith distance = 43 deg. The sun altitude is -24.4 deg.
The galactic latitude b = -49 deg., longitude l = 250 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=3532616
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
3775 | 2026-11-15 01:24:08 | MASTER-OAFA | (03h 54m 28.47s , -44d 17m 23.6s) | C | 120 | 20.6 |
3901 | 2026-11-15 01:26:14 | MASTER-OAFA | (03h 54m 28.57s , -44d 17m 19.9s) | C | 120 | 20.6 |
4027 | 2026-11-15 01:28:20 | MASTER-OAFA | (03h 54m 28.64s , -44d 17m 15.9s) | C | 120 | 20.6 |
4153 | 2026-11-15 01:30:27 | MASTER-OAFA | (03h 54m 28.69s , -44d 17m 11.8s) | C | 120 | 20.7 |
4279 | 2026-11-15 01:32:33 | MASTER-OAFA | (03h 54m 28.75s , -44d 17m 07.7s) | C | 120 | 20.6 |
4405 | 2026-11-15 01:34:39 | MASTER-OAFA | (03h 54m 28.79s , -44d 17m 03.5s) | C | 120 | 20.7 |
4531 | 2026-11-15 01:36:44 | MASTER-OAFA | (03h 54m 28.84s , -44d 16m 59.2s) | C | 120 | 20.6 |
4657 | 2026-11-15 01:38:51 | MASTER-OAFA | (03h 54m 28.89s , -44d 16m 55.0s) | C | 120 | 20.7 |
4783 | 2026-11-15 01:40:57 | MASTER-OAFA | (03h 54m 28.94s , -44d 16m 50.8s) | C | 120 | 20.7 |
4909 | 2026-11-15 01:43:03 | MASTER-OAFA | (03h 54m 28.98s , -44d 16m 46.4s) | C | 120 | 20.7 |
5036 | 2026-11-15 01:45:09 | MASTER-OAFA | (03h 54m 29.03s , -44d 16m 42.0s) | C | 120 | 20.7 |
5162 | 2026-11-15 01:47:15 | MASTER-OAFA | (03h 54m 29.07s , -44d 16m 37.5s) | C | 120 | 20.8 |
5288 | 2026-11-15 01:49:21 | MASTER-OAFA | (03h 54m 29.12s , -44d 16m 33.1s) | C | 120 | 20.7 |
5414 | 2026-11-15 01:51:27 | MASTER-OAFA | (03h 54m 29.18s , -44d 16m 28.8s) | C | 120 | 20.7 |
5540 | 2026-11-15 01:53:33 | MASTER-OAFA | (03h 54m 29.23s , -44d 16m 24.5s) | C | 120 | 20.6 |
5666 | 2026-11-15 01:55:40 | MASTER-OAFA | (03h 54m 29.28s , -44d 16m 20.8s) | C | 120 | 19.6 |
5792 | 2026-11-15 01:57:46 | MASTER-OAFA | (03h 54m 29.33s , -44d 16m 17.8s) | C | 120 | 14.9 |
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