GCN Circular 46169
Subject
EP Alert 261105.81: Global MASTER-Net observations report
Date
2026-11-06T08:45:27Z (12 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 EP Alert 261105.81 (trigger No 1793907067,00h 25m 11.33s , -54d 27m 37.1s, R=0.00216667) errorbox 15502 sec after notice time and 45999 sec after trigger time at 2026-11-06 08:17:46 UT, with upper limit up to 18.7 mag. Observations started at twilight. The observations began at zenith distance = 67 deg. The sun altitude is -15.6 deg.
The galactic latitude b = -63 deg., longitude l = 311 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=3532338
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
46029 | 2026-11-06 08:17:46 | MASTER-OAFA | (00h 24m 59.20s , -54d 33m 30.2s) | C | 60 | 18.7 |
46106 | 2026-11-06 08:19:03 | MASTER-OAFA | (00h 25m 05.19s , -54d 34m 31.4s) | C | 60 | 18.5 |
46183 | 2026-11-06 08:20:20 | MASTER-OAFA | (00h 25m 00.83s , -54d 35m 33.4s) | C | 60 | 18.0 |
46259 | 2026-11-06 08:21:36 | MASTER-OAFA | (00h 25m 05.34s , -54d 35m 27.4s) | C | 60 | 18.4 |
46337 | 2026-11-06 08:22:54 | MASTER-OAFA | (00h 25m 03.15s , -54d 33m 47.8s) | C | 60 | 18.7 |
46414 | 2026-11-06 08:24:10 | MASTER-OAFA | (00h 25m 03.30s , -54d 35m 20.6s) | C | 60 | 18.4 |
46490 | 2026-11-06 08:25:27 | MASTER-OAFA | (00h 25m 05.55s , -54d 33m 44.5s) | C | 60 | 18.4 |
46568 | 2026-11-06 08:26:44 | MASTER-OAFA | (00h 25m 01.42s , -54d 34m 43.3s) | C | 60 | 18.0 |
46647 | 2026-11-06 08:28:03 | MASTER-OAFA | (00h 25m 00.81s , -54d 33m 44.6s) | C | 60 | 17.6 |
46723 | 2026-11-06 08:29:20 | MASTER-OAFA | (00h 25m 07.34s , -54d 34m 46.8s) | C | 60 | 17.8 |
46800 | 2026-11-06 08:30:36 | MASTER-OAFA | (00h 25m 01.48s , -54d 35m 49.2s) | C | 60 | 17.8 |
46876 | 2026-11-06 08:31:53 | MASTER-OAFA | (00h 25m 07.26s , -54d 35m 28.2s) | C | 60 | 18.0 |
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