TITLE: GCN CIRCULAR NUMBER: 31873 SUBJECT: Fermi GRB 220411A: Global MASTER-Net observations report DATE: 22/04/11 08:30:29 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko, G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev (Irkutsk State University, API), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A. Gabovich, V.Yurkov (Blagoveschensk Educational State University) MASTER-OAGH robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Mexico (OAGH National Institute for Astrophysics, Optics and Electronics) started inspect of the Fermi GRB 220411A ( Fermi GBM team, GCN 31871) errorbox 32 sec after notice time and 62 sec after trigger time at 2022-04-11 07:21:03 UT, with upper limit up to 17.5 mag. The observations began at zenith distance = 20 deg. The sun altitude is -50.8 deg. The galactic latitude b = 77 deg., longitude l = 218 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1939159 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 68 | 2022-04-11 07:21:03 | MASTER-OAGH | (11h 52m 52.63s , +26d 05m 41.6s) | P- | 10 | 14.4 | 104 | 2022-04-11 07:21:34 | MASTER-OAGH | (11h 52m 48.93s , +26d 07m 11.8s) | P- | 20 | 15.9 | 150 | 2022-04-11 07:22:15 | MASTER-OAGH | (11h 53m 18.01s , +25d 38m 16.8s) | C | 30 | 12.1 | 150 | 2022-04-11 07:22:15 | MASTER-OAGH | (11h 52m 48.76s , +26d 05m 30.2s) | P- | 30 | 16.8 | 210 | 2022-04-11 07:23:10 | MASTER-OAGH | (11h 52m 52.09s , +26d 07m 01.4s) | P- | 40 | 16.3 | 298 | 2022-04-11 07:24:33 | MASTER-OAGH | (11h 52m 45.16s , +26d 06m 06.2s) | P- | 50 | 16.3 | 298 | 2022-04-11 07:24:33 | MASTER-OAGH | (11h 53m 14.19s , +25d 38m 45.3s) | C | 50 | 12.5 | 390 | 2022-04-11 07:25:55 | MASTER-OAGH | (11h 53m 14.35s , +25d 39m 45.2s) | C | 70 | 12.5 | 390 | 2022-04-11 07:25:55 | MASTER-OAGH | (11h 52m 45.14s , +26d 07m 03.3s) | P- | 70 | 16.6 | 491 | 2022-04-11 07:27:26 | MASTER-OAGH | (11h 52m 51.45s , +26d 06m 02.5s) | P- | 90 | 15.3 | 613 | 2022-04-11 07:29:18 | MASTER-OAGH | (11h 53m 08.87s , +25d 38m 00.0s) | C | 110 | 12.4 | 613 | 2022-04-11 07:29:18 | MASTER-OAGH | (11h 52m 45.44s , +26d 05m 00.2s) | P- | 110 | 16.6 | 761 | 2022-04-11 07:31:31 | MASTER-OAGH | (11h 53m 16.06s , +25d 37m 53.4s) | C | 140 | 12.8 | 761 | 2022-04-11 07:31:31 | MASTER-OAGH | (11h 52m 52.62s , +26d 05m 00.5s) | P- | 140 | 16.8 | 944 | 2022-04-11 07:34:19 | MASTER-OAGH | (11h 52m 49.29s , +26d 06m 36.6s) | P- | 170 | 17.3 | 944 | 2022-04-11 07:34:19 | MASTER-OAGH | (11h 53m 18.70s , +25d 39m 19.9s) | C | 170 | 12.3 | 1141 | 2022-04-11 07:37:31 | MASTER-OAGH | (11h 53m 18.99s , +25d 37m 48.3s) | C | 180 | 12.5 | 1141 | 2022-04-11 07:37:31 | MASTER-OAGH | (11h 52m 49.51s , +26d 05m 09.8s) | P- | 180 | 17.0 | 1376 | 2022-04-11 07:41:26 | MASTER-OAGH | (11h 53m 22.33s , +25d 39m 17.1s) | C | 180 | 12.9 | 1376 | 2022-04-11 07:41:26 | MASTER-OAGH | (11h 52m 52.96s , +26d 06m 39.9s) | P- | 180 | 17.1 | 1616 | 2022-04-11 07:45:26 | MASTER-OAGH | (11h 52m 47.04s , +26d 06m 00.2s) | P- | 180 | 17.2 | 1758 | 2022-04-11 07:48:48 | MASTER-OAGH | (11h 44m 46.14s , +26d 20m 59.3s) | C | 60 | 17.1 | 2083 | 2022-04-11 07:54:13 | MASTER-OAGH | (11h 54m 00.64s , +25d 53m 10.6s) | C | 60 | 12.4 | 2083 | 2022-04-11 07:54:13 | MASTER-OAGH | (11h 53m 35.38s , +26d 20m 18.2s) | C | 60 | 17.1 | 2165 | 2022-04-11 07:55:35 | MASTER-OAGH | (11h 50m 30.92s , +24d 27m 07.4s) | C | 60 | 16.0 | 2246 | 2022-04-11 07:56:56 | MASTER-OAGH | (11h 59m 16.98s , +24d 28m 08.3s) | C | 60 | 16.3 | 2429 | 2022-04-11 07:59:59 | MASTER-OAGH | (11h 48m 33.06s , +28d 14m 02.1s) | C | 60 | 17.0 | 2515 | 2022-04-11 08:01:25 | MASTER-OAGH | (11h 56m 38.11s , +28d 13m 55.7s) | C | 60 | 17.1 | 2767 | 2022-04-11 08:05:37 | MASTER-OAGH | (11h 44m 39.76s , +26d 21m 01.6s) | C | 60 | 16.4 | 2848 | 2022-04-11 08:06:58 | MASTER-OAGH | (12h 01m 40.16s , +26d 21m 01.6s) | C | 60 | 17.1 | 3011 | 2022-04-11 08:09:41 | MASTER-OAGH | (11h 53m 39.58s , +26d 20m 06.2s) | C | 60 | 16.8 | 3097 | 2022-04-11 08:11:07 | MASTER-OAGH | (11h 50m 34.31s , +24d 27m 48.4s) | C | 60 | 16.6 | 3178 | 2022-04-11 08:12:28 | MASTER-OAGH | (11h 59m 19.92s , +24d 26m 29.8s) | C | 60 | 17.5 | 3272 | 2022-04-11 08:14:02 | MASTER-OAGH | (11h 39m 57.05s , +27d 48m 51.2s) | C | 60 | 12.7 | 3376 | 2022-04-11 08:15:46 | MASTER-OAGH | (11h 48m 58.26s , +27d 47m 33.3s) | C | 60 | 12.5 | 3376 | 2022-04-11 08:15:46 | MASTER-OAGH | (11h 48m 25.73s , +28d 14m 53.5s) | C | 60 | 17.0 | 3476 | 2022-04-11 08:17:26 | MASTER-OAGH | (11h 56m 34.57s , +28d 15m 55.0s) | C | 60 | 16.5 | 3666 | 2022-04-11 08:20:36 | MASTER-OAGH | (11h 44m 41.17s , +26d 20m 00.7s) | C | 60 | 16.5 | 3980 | 2022-04-11 08:25:50 | MASTER-OAGH | (11h 49m 16.26s , +22d 32m 35.4s) | C | 60 | 16.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.