TITLE: GCN CIRCULAR NUMBER: 44748 SUBJECT: Fermi trigger No 801900520: Global MASTER-Net observations report DATE: 26/05/31 18:30:43 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), M. Segura, 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-OAFA robotic telescope [1] located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB260531.26 (trigger No 801900520,19h 13m 33.60s , -54d 13m 12.0s, R=3.3) errorbox 2033 sec after notice time and 2082 sec after trigger time at 2026-05-31 06:43:18 UT, with upper limit up to 19.2 mag. The observations began at zenith distance = 21 deg. The sun altitude is -59.5 deg. MASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB260531.26 errorbox 42758 sec after notice time and 42807 sec after trigger time at 2026-05-31 18:02:03 UT, with upper limit up to 16.5 mag. The observations began at zenith distance = 76 deg. The sun altitude is -29.8 deg. The galactic latitude b = -25 deg., longitude l = 343 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=3350277 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 2113 | 2026-05-31 06:43:18 | MASTER-OAFA | (19h 11m 50.85s , -51d 54m 44.5s) | C | 60 | 18.3 | 2173 | 2026-05-31 06:43:18 | MASTER-OAFA | (19h 11m 50.85s , -51d 54m 44.5s) | C | 180 | 18.7 | Coadd 2191 | 2026-05-31 06:44:36 | MASTER-OAFA | (19h 24m 42.46s , -51d 56m 13.7s) | C | 60 | 18.1 | 2251 | 2026-05-31 06:44:36 | MASTER-OAFA | (19h 24m 42.47s , -51d 56m 13.7s) | C | 180 | 18.6 | Coadd 2272 | 2026-05-31 06:45:57 | MASTER-OAFA | (19h 24m 42.83s , -51d 55m 12.0s) | C | 60 | 18.0 | 2351 | 2026-05-31 06:47:16 | MASTER-OAFA | (19h 11m 51.26s , -51d 55m 16.0s) | C | 60 | 17.9 | 2427 | 2026-05-31 06:48:32 | MASTER-OAFA | (19h 24m 43.21s , -51d 57m 07.7s) | C | 60 | 18.0 | 2503 | 2026-05-31 06:49:48 | MASTER-OAFA | (19h 24m 50.56s , -51d 56m 49.6s) | C | 60 | 18.1 | 2563 | 2026-05-31 06:49:48 | MASTER-OAFA | (19h 24m 50.56s , -51d 56m 49.6s) | C | 180 | 18.9 | Coadd 2571 | 2026-05-31 06:50:56 | MASTER-OAFA | (19h 11m 49.05s , -51d 54m 34.6s) | C | 60 | 18.1 | 2650 | 2026-05-31 06:52:15 | MASTER-OAFA | (18h 46m 18.02s , -53d 46m 35.9s) | C | 60 | 18.1 | 2710 | 2026-05-31 06:52:15 | MASTER-OAFA | (18h 46m 18.03s , -53d 46m 35.9s) | C | 180 | 18.8 | Coadd 2724 | 2026-05-31 06:53:29 | MASTER-OAFA | (18h 46m 11.08s , -53d 47m 17.1s) | C | 60 | 18.2 | 2802 | 2026-05-31 06:54:48 | MASTER-OAFA | (18h 59m 43.87s , -53d 47m 10.3s) | C | 60 | 18.2 | 2862 | 2026-05-31 06:54:48 | MASTER-OAFA | (18h 59m 43.87s , -53d 47m 10.3s) | C | 180 | 18.8 | Coadd 2882 | 2026-05-31 06:56:07 | MASTER-OAFA | (18h 59m 50.56s , -53d 48m 08.5s) | C | 60 | 18.1 | 2965 | 2026-05-31 06:57:30 | MASTER-OAFA | (18h 46m 13.09s , -53d 48m 10.7s) | C | 60 | 18.1 | 3042 | 2026-05-31 06:58:47 | MASTER-OAFA | (18h 59m 51.14s , -53d 48m 44.6s) | C | 60 | 18.2 | 3120 | 2026-05-31 07:00:05 | MASTER-OAFA | (18h 46m 15.86s , -53d 46m 11.8s) | C | 60 | 18.0 | 3180 | 2026-05-31 07:00:05 | MASTER-OAFA | (18h 46m 15.86s , -53d 46m 11.8s) | C | 180 | 18.6 | Coadd 3199 | 2026-05-31 07:01:24 | MASTER-OAFA | (18h 46m 17.98s , -53d 46m 06.1s) | C | 60 | 18.0 | 3290 | 2026-05-31 07:02:55 | MASTER-OAFA | (18h 46m 13.31s , -53d 47m 01.3s) | C | 60 | 18.0 | 3370 | 2026-05-31 07:04:15 | MASTER-OAFA | (18h 59m 44.89s , -53d 46m 54.0s) | C | 60 | 17.8 | 3430 | 2026-05-31 07:04:15 | MASTER-OAFA | (18h 59m 44.88s , -53d 46m 54.0s) | C | 180 | 18.3 | Coadd 3450 | 2026-05-31 07:05:35 | MASTER-OAFA | (18h 59m 52.98s , -53d 47m 52.6s) | C | 60 | 17.6 | 3530 | 2026-05-31 07:06:55 | MASTER-OAFA | (18h 46m 14.94s , -53d 47m 55.3s) | C | 60 | 17.6 | 3590 | 2026-05-31 07:06:55 | MASTER-OAFA | (18h 46m 14.94s , -53d 47m 55.3s) | C | 180 | 18.0 | Coadd 3607 | 2026-05-31 07:08:12 | MASTER-OAFA | (18h 59m 52.02s , -53d 48m 41.0s) | C | 60 | 17.8 | 3684 | 2026-05-31 07:09:29 | MASTER-OAFA | (18h 46m 18.07s , -53d 46m 20.6s) | C | 60 | 17.8 | 3761 | 2026-05-31 07:10:46 | MASTER-OAFA | (18h 47m 18.97s , -51d 52m 21.5s) | C | 60 | 17.7 | 3821 | 2026-05-31 07:10:46 | MASTER-OAFA | (18h 47m 18.98s , -51d 52m 21.6s) | C | 180 | 18.4 | Coadd 3833 | 2026-05-31 07:11:58 | MASTER-OAFA | (19h 00m 10.19s , -51d 53m 44.8s) | C | 60 | 17.7 | 3893 | 2026-05-31 07:11:58 | MASTER-OAFA | (19h 00m 10.19s , -51d 53m 44.8s) | C | 180 | 18.4 | Coadd 3919 | 2026-05-31 07:13:24 | MASTER-OAFA | (19h 00m 10.57s , -51d 52m 42.2s) | C | 60 | 17.7 | 3985 | 2026-05-31 07:14:30 | MASTER-OAFA | (19h 00m 16.18s , -51d 53m 40.5s) | C | 60 | 17.9 | 4064 | 2026-05-31 07:15:49 | MASTER-OAFA | (18h 47m 13.98s , -51d 53m 47.1s) | C | 60 | 17.8 | 4141 | 2026-05-31 07:17:06 | MASTER-OAFA | (19h 00m 18.54s , -51d 54m 13.1s) | C | 60 | 18.0 | 4201 | 2026-05-31 07:17:06 | MASTER-OAFA | (19h 00m 18.54s , -51d 54m 13.1s) | C | 180 | 18.5 | Coadd 4218 | 2026-05-31 07:18:23 | MASTER-OAFA | (18h 47m 17.91s , -51d 52m 10.0s) | C | 60 | 18.1 | 4299 | 2026-05-31 07:19:44 | MASTER-OAFA | (19h 16m 32.50s , -57d 35m 27.0s) | C | 60 | 18.5 | 4359 | 2026-05-31 07:19:44 | MASTER-OAFA | (19h 16m 32.50s , -57d 35m 27.0s) | C | 180 | 19.1 | Coadd 4377 | 2026-05-31 07:21:02 | MASTER-OAFA | (19h 31m 23.40s , -57d 37m 24.8s) | C | 60 | 18.6 | 4437 | 2026-05-31 07:21:02 | MASTER-OAFA | (19h 31m 23.39s , -57d 37m 24.9s) | C | 180 | 19.2 | Coadd 4468 | 2026-05-31 07:22:33 | MASTER-OAFA | (19h 31m 23.11s , -57d 36m 22.0s) | C | 60 | 18.6 | 4547 | 2026-05-31 07:23:52 | MASTER-OAFA | (19h 16m 34.90s , -57d 36m 18.8s) | C | 60 | 18.6 | 4636 | 2026-05-31 07:25:21 | MASTER-OAFA | (19h 16m 29.15s , -57d 37m 16.0s) | C | 60 | 18.6 | 4733 | 2026-05-31 07:26:58 | MASTER-OAFA | (19h 31m 31.66s , -57d 37m 51.1s) | C | 60 | 18.7 | 4809 | 2026-05-31 07:28:14 | MASTER-OAFA | (19h 16m 32.52s , -57d 35m 30.3s) | C | 60 | 18.6 | 4869 | 2026-05-31 07:28:14 | MASTER-OAFA | (19h 16m 32.52s , -57d 35m 30.3s) | C | 180 | 19.0 | Coadd 4896 | 2026-05-31 07:29:41 | MASTER-OAFA | (19h 24m 54.82s , -51d 55m 38.1s) | C | 60 | 18.5 | 4974 | 2026-05-31 07:30:59 | MASTER-OAFA | (19h 24m 58.03s , -51d 53m 53.1s) | C | 60 | 18.4 | 5049 | 2026-05-31 07:32:14 | MASTER-OAFA | (19h 24m 52.09s , -51d 54m 46.8s) | C | 60 | 18.4 | 5109 | 2026-05-31 07:32:14 | MASTER-OAFA | (19h 24m 52.09s , -51d 54m 46.8s) | C | 180 | 19.0 | Coadd 5126 | 2026-05-31 07:33:31 | MASTER-OAFA | (19h 24m 53.16s , -51d 53m 44.0s) | C | 60 | 18.4 | 5206 | 2026-05-31 07:34:51 | MASTER-OAFA | (19h 12m 01.79s , -51d 53m 51.5s) | C | 60 | 18.3 | 5266 | 2026-05-31 07:34:51 | MASTER-OAFA | (19h 12m 01.80s , -51d 53m 51.5s) | C | 180 | 18.6 | Coadd 5288 | 2026-05-31 07:36:13 | MASTER-OAFA | (19h 12m 00.74s , -51d 54m 20.9s) | C | 60 | 17.3 | 5354 | 2026-05-31 07:37:19 | MASTER-OAFA | (19h 12m 00.96s , -51d 54m 19.5s) | C | 60 | 18.4 | 5432 | 2026-05-31 07:38:37 | MASTER-OAFA | (19h 11m 59.11s , -51d 53m 02.6s) | C | 60 | 17.8 | 5492 | 2026-05-31 07:38:37 | MASTER-OAFA | (19h 11m 59.11s , -51d 53m 02.5s) | C | 180 | 18.5 | Coadd 5499 | 2026-05-31 07:39:44 | MASTER-OAFA | (18h 59m 57.09s , -53d 47m 47.5s) | C | 60 | 18.3 | 5559 | 2026-05-31 07:39:44 | MASTER-OAFA | (18h 59m 57.09s , -53d 47m 47.5s) | C | 180 | 18.8 | Coadd 5583 | 2026-05-31 07:41:08 | MASTER-OAFA | (19h 00m 00.32s , -53d 46m 09.8s) | C | 60 | 18.1 | 5649 | 2026-05-31 07:42:14 | MASTER-OAFA | (18h 59m 54.17s , -53d 46m 49.6s) | C | 60 | 18.3 | 5728 | 2026-05-31 07:43:33 | MASTER-OAFA | (18h 59m 54.45s , -53d 45m 47.8s) | C | 60 | 17.8 | 5788 | 2026-05-31 07:43:33 | MASTER-OAFA | (18h 59m 54.45s , -53d 45m 47.7s) | C | 180 | 18.7 | Coadd 5795 | 2026-05-31 07:44:40 | MASTER-OAFA | (18h 46m 29.24s , -53d 45m 55.6s) | C | 60 | 17.8 | 5860 | 2026-05-31 07:45:46 | MASTER-OAFA | (18h 46m 23.45s , -53d 46m 53.3s) | C | 60 | 18.2 | 5920 | 2026-05-31 07:45:46 | MASTER-OAFA | (18h 46m 23.45s , -53d 46m 53.3s) | C | 180 | 18.9 | Coadd 5937 | 2026-05-31 07:47:02 | MASTER-OAFA | (18h 46m 29.93s , -53d 46m 45.6s) | C | 60 | 18.3 | 6015 | 2026-05-31 07:48:20 | MASTER-OAFA | (18h 46m 27.83s , -53d 45m 04.0s) | C | 60 | 18.2 | 6092 | 2026-05-31 07:49:38 | MASTER-OAFA | (18h 59m 59.51s , -53d 47m 11.8s) | C | 60 | 18.1 | 6159 | 2026-05-31 07:50:44 | MASTER-OAFA | (19h 00m 02.74s , -53d 45m 42.7s) | C | 60 | 18.3 | 6239 | 2026-05-31 07:52:04 | MASTER-OAFA | (18h 59m 58.05s , -53d 46m 35.6s) | C | 60 | 18.0 | 6299 | 2026-05-31 07:52:04 | MASTER-OAFA | (18h 59m 58.04s , -53d 46m 35.7s) | C | 180 | 18.6 | Coadd 6306 | 2026-05-31 07:53:11 | MASTER-OAFA | (18h 59m 57.98s , -53d 45m 33.8s) | C | 60 | 18.3 | 6395 | 2026-05-31 07:54:40 | MASTER-OAFA | (18h 46m 32.33s , -53d 45m 41.7s) | C | 60 | 18.2 | 6455 | 2026-05-31 07:54:40 | MASTER-OAFA | (18h 46m 32.33s , -53d 45m 41.7s) | C | 180 | 18.8 | Coadd 6487 | 2026-05-31 07:56:12 | MASTER-OAFA | (18h 46m 26.96s , -53d 46m 39.8s) | C | 60 | 18.2 | 6565 | 2026-05-31 07:57:30 | MASTER-OAFA | (18h 46m 33.86s , -53d 46m 12.0s) | C | 60 | 18.2 | 6642 | 2026-05-31 07:58:47 | MASTER-OAFA | (18h 46m 30.67s , -53d 44m 47.0s) | C | 60 | 18.0 | 6702 | 2026-05-31 07:58:47 | MASTER-OAFA | (18h 46m 30.67s , -53d 44m 47.0s) | C | 180 | 17.8 | Coadd 6720 | 2026-05-31 08:00:05 | MASTER-OAFA | (19h 00m 24.77s , -51d 53m 14.9s) | C | 60 | 18.1 | 6800 | 2026-05-31 08:01:25 | MASTER-OAFA | (19h 00m 27.28s , -51d 51m 36.1s) | C | 60 | 18.1 | 6876 | 2026-05-31 08:02:41 | MASTER-OAFA | (19h 00m 21.83s , -51d 52m 26.9s) | C | 60 | 18.1 | 6936 | 2026-05-31 08:02:41 | MASTER-OAFA | (19h 00m 21.84s , -51d 52m 27.0s) | C | 180 | 18.0 | Coadd 6952 | 2026-05-31 08:03:57 | MASTER-OAFA | (19h 00m 22.92s , -51d 51m 25.9s) | C | 60 | 18.0 | 7030 | 2026-05-31 08:05:15 | MASTER-OAFA | (18h 47m 31.26s , -51d 51m 37.6s) | C | 60 | 18.0 | 7090 | 2026-05-31 08:05:15 | MASTER-OAFA | (18h 47m 31.26s , -51d 51m 37.5s) | C | 180 | 18.6 | Coadd 7109 | 2026-05-31 08:06:34 | MASTER-OAFA | (18h 47m 26.86s , -51d 52m 35.5s) | C | 60 | 18.0 | 7185 | 2026-05-31 08:07:50 | MASTER-OAFA | (18h 47m 33.69s , -51d 52m 33.5s) | C | 60 | 17.9 | 7262 | 2026-05-31 08:09:07 | MASTER-OAFA | (18h 47m 30.42s , -51d 50m 54.8s) | C | 60 | 18.0 | 7341 | 2026-05-31 08:10:26 | MASTER-OAFA | (19h 31m 38.78s , -57d 36m 37.1s) | C | 60 | 18.4 | 7401 | 2026-05-31 08:10:26 | MASTER-OAFA | (19h 31m 38.78s , -57d 36m 37.2s) | C | 180 | 19.2 | Coadd 7423 | 2026-05-31 08:11:48 | MASTER-OAFA | (19h 31m 41.47s , -57d 35m 19.3s) | C | 60 | 18.5 | 7499 | 2026-05-31 08:13:04 | MASTER-OAFA | (19h 31m 37.44s , -57d 35m 53.0s) | C | 60 | 18.5 | 7576 | 2026-05-31 08:14:22 | MASTER-OAFA | (19h 31m 37.85s , -57d 34m 50.7s) | C | 60 | 18.5 | 7636 | 2026-05-31 08:14:22 | MASTER-OAFA | (19h 31m 37.78s , -57d 34m 50.9s) | C | 180 | 18.6 | Coadd 7654 | 2026-05-31 08:15:39 | MASTER-OAFA | (19h 16m 47.51s , -57d 34m 53.5s) | C | 60 | 18.4 | 7746 | 2026-05-31 08:17:11 | MASTER-OAFA | (19h 16m 43.21s , -57d 35m 51.2s) | C | 60 | 18.4 | 7834 | 2026-05-31 08:18:39 | MASTER-OAFA | (19h 16m 49.04s , -57d 35m 26.2s) | C | 60 | 18.3 | 7914 | 2026-05-31 08:19:59 | MASTER-OAFA | (19h 16m 46.29s , -57d 34m 03.8s) | C | 60 | 18.2 | 8005 | 2026-05-31 08:21:30 | MASTER-OAFA | (19h 25m 06.71s , -51d 54m 22.7s) | C | 60 | 18.3 | 8095 | 2026-05-31 08:23:00 | MASTER-OAFA | (19h 25m 09.34s , -51d 52m 44.0s) | C | 60 | 18.2 | 8155 | 2026-05-31 08:23:00 | MASTER-OAFA | (19h 25m 09.34s , -51d 52m 44.0s) | C | 180 | 18.8 | Coadd 8183 | 2026-05-31 08:24:28 | MASTER-OAFA | (19h 25m 03.90s , -51d 53m 26.1s) | C | 60 | 18.2 | 8265 | 2026-05-31 08:25:50 | MASTER-OAFA | (19h 25m 04.32s , -51d 52m 24.1s) | C | 60 | 18.1 | 8331 | 2026-05-31 08:26:57 | MASTER-OAFA | (19h 12m 14.55s , -51d 52m 37.2s) | C | 60 | 18.0 | 8408 | 2026-05-31 08:28:13 | MASTER-OAFA | (19h 12m 09.06s , -51d 53m 35.4s) | C | 60 | 18.0 | 8493 | 2026-05-31 08:29:38 | MASTER-OAFA | (19h 12m 13.79s , -51d 53m 04.8s) | C | 60 | 18.0 | 8572 | 2026-05-31 08:30:57 | MASTER-OAFA | (19h 12m 12.05s , -51d 51m 59.9s) | C | 60 | 18.0 | 8654 | 2026-05-31 08:32:19 | MASTER-OAFA | (19h 00m 11.05s , -53d 46m 14.3s) | C | 60 | 18.0 | 8746 | 2026-05-31 08:33:51 | MASTER-OAFA | (19h 00m 13.99s , -53d 45m 00.1s) | C | 60 | 17.9 | 8806 | 2026-05-31 08:33:51 | MASTER-OAFA | (19h 00m 13.99s , -53d 45m 00.1s) | C | 180 | 18.5 | Coadd 8836 | 2026-05-31 08:35:21 | MASTER-OAFA | (19h 00m 09.05s , -53d 45m 39.9s) | C | 60 | 17.9 | 8911 | 2026-05-31 08:36:36 | MASTER-OAFA | (19h 00m 08.70s , -53d 44m 38.2s) | C | 60 | 17.9 | 9004 | 2026-05-31 08:38:09 | MASTER-OAFA | (18h 46m 44.75s , -53d 44m 51.5s) | C | 60 | 17.7 | 9114 | 2026-05-31 08:39:59 | MASTER-OAFA | (18h 46m 30.23s , -53d 52m 59.6s) | C | 60 | 17.8 | 9180 | 2026-05-31 08:41:05 | MASTER-OAFA | (18h 46m 36.47s , -53d 52m 41.7s) | C | 60 | 17.9 | 9261 | 2026-05-31 08:42:26 | MASTER-OAFA | (18h 46m 34.22s , -53d 51m 00.2s) | C | 60 | 17.9 | 9350 | 2026-05-31 08:43:55 | MASTER-OAFA | (19h 00m 07.00s , -53d 53m 37.7s) | C | 60 | 16.4 | 9410 | 2026-05-31 08:43:55 | MASTER-OAFA | (19h 00m 07.00s , -53d 53m 37.7s) | C | 180 | 17.9 | Coadd 9497 | 2026-05-31 08:46:23 | MASTER-OAFA | (19h 00m 04.66s , -53d 52m 39.3s) | C | 60 | 17.5 | 9578 | 2026-05-31 08:47:43 | MASTER-OAFA | (19h 00m 04.92s , -53d 51m 38.1s) | C | 60 | 17.9 | 9662 | 2026-05-31 08:49:07 | MASTER-OAFA | (19h 00m 33.52s , -51d 59m 01.0s) | C | 60 | 17.9 | 9740 | 2026-05-31 08:50:25 | MASTER-OAFA | (19h 00m 30.52s , -51d 57m 57.7s) | C | 60 | 18.0 | 9800 | 2026-05-31 08:50:25 | MASTER-OAFA | (19h 00m 30.51s , -51d 57m 57.7s) | C | 180 | 18.6 | Coadd 9824 | 2026-05-31 08:51:49 | MASTER-OAFA | (19h 00m 30.70s , -51d 59m 13.4s) | C | 60 | 18.0 | 9902 | 2026-05-31 08:53:07 | MASTER-OAFA | (19h 00m 33.85s , -51d 57m 39.7s) | C | 60 | 18.1 | 9989 | 2026-05-31 08:54:34 | MASTER-OAFA | (19h 31m 49.04s , -57d 42m 31.4s) | C | 60 | 18.5 | 10064 | 2026-05-31 08:55:50 | MASTER-OAFA | (19h 31m 42.78s , -57d 43m 30.9s) | C | 60 | 18.4 | 10144 | 2026-05-31 08:57:09 | MASTER-OAFA | (19h 31m 49.15s , -57d 43m 13.2s) | C | 60 | 17.6 | 10217 | 2026-05-31 08:58:22 | MASTER-OAFA | (19h 31m 47.05s , -57d 41m 44.9s) | C | 60 | 18.3 | 10309 | 2026-05-31 08:59:55 | MASTER-OAFA | (19h 25m 08.75s , -51d 59m 40.0s) | C | 60 | 18.2 | 10369 | 2026-05-31 08:59:55 | MASTER-OAFA | (19h 25m 08.75s , -51d 59m 40.0s) | C | 180 | 18.7 | Coadd 10392 | 2026-05-31 09:01:17 | MASTER-OAFA | (19h 25m 08.62s , -51d 58m 38.4s) | C | 60 | 18.1 | 10477 | 2026-05-31 09:02:42 | MASTER-OAFA | (19h 25m 14.18s , -51d 59m 37.6s) | C | 60 | 17.8 | 10546 | 2026-05-31 09:03:51 | MASTER-OAFA | (19h 25m 08.91s , -52d 00m 36.7s) | C | 60 | 17.7 | 10667 | 2026-05-31 09:05:53 | MASTER-OAFA | (19h 02m 08.96s , -50d 04m 19.5s) | C | 60 | 18.0 | 10746 | 2026-05-31 09:07:11 | MASTER-OAFA | (19h 02m 02.62s , -50d 05m 18.5s) | C | 60 | 17.9 | 10843 | 2026-05-31 09:08:48 | MASTER-OAFA | (19h 36m 55.75s , -51d 59m 09.3s) | C | 60 | 18.3 | 10903 | 2026-05-31 09:08:48 | MASTER-OAFA | (19h 36m 55.75s , -51d 59m 09.3s) | C | 180 | 18.9 | Coadd 10919 | 2026-05-31 09:10:04 | MASTER-OAFA | (19h 36m 49.81s , -52d 00m 06.7s) | C | 60 | 18.2 | 11010 | 2026-05-31 09:11:35 | MASTER-OAFA | (19h 36m 49.96s , -52d 00m 05.7s) | C | 60 | 18.4 | 11102 | 2026-05-31 09:13:07 | MASTER-OAFA | (19h 36m 50.16s , -52d 00m 04.8s) | C | 60 | 18.5 | 11162 | 2026-05-31 09:13:07 | MASTER-OAFA | (19h 36m 50.16s , -52d 00m 04.8s) | C | 180 | 19.2 | Coadd 11270 | 2026-05-31 09:15:55 | MASTER-OAFA | (19h 36m 56.81s , -52d 00m 59.2s) | C | 60 | 18.4 | 11348 | 2026-05-31 09:17:13 | MASTER-OAFA | (19h 36m 54.49s , -52d 00m 45.3s) | C | 60 | 18.4 | 11599 | 2026-05-31 09:21:24 | MASTER-OAFA | (19h 36m 53.46s , -51d 58m 57.5s) | C | 60 | 18.3 | 11659 | 2026-05-31 09:21:24 | MASTER-OAFA | (19h 36m 53.46s , -51d 58m 57.5s) | C | 180 | 19.0 | Coadd 11677 | 2026-05-31 09:22:43 | MASTER-OAFA | (19h 36m 57.97s , -51d 59m 57.0s) | C | 60 | 18.2 | 11824 | 2026-05-31 09:25:09 | MASTER-OAFA | (19h 36m 58.67s , -52d 00m 50.4s) | C | 60 | 18.2 | 42838 | 2026-05-31 18:02:03 | MASTER-SAAO | (19h 12m 51.00s , -50d 21m 54.7s) | C | 60 | 16.2 | 42838 | 2026-05-31 18:02:03 | MASTER-SAAO | (19h 10m 01.45s , -50d 06m 26.3s) | C | 60 | 16.5 | 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/44748. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...