TITLE: GCN CIRCULAR NUMBER: 27782 SUBJECT: Fermi GRB 200522B: Global MASTER-Net observations report DATE: 20/05/22 17:45:15 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 200522B ( Fermi GBM team, GCN 27781) errorbox 3363 sec after notice time and 3389 sec after trigger time at 2020-05-22 16:33:08 UT, with upper limit up to 19.4 mag. Observations started at twilight. The observations began at zenith distance = 48 deg. The sun altitude is -10.2 deg. The galactic latitude b = -28 deg., longitude l = 246 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1363163 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 3419 | 2020-05-22 16:33:08 | MASTER-SAAO | (05h 58m 45.28s , -39d 59m 55.0s) | C | 60 | 17.5 | 3419 | 2020-05-22 16:33:08 | MASTER-SAAO | (05h 49m 22.12s , -40d 01m 28.5s) | C | 60 | 17.4 | 3499 | 2020-05-22 16:34:28 | MASTER-SAAO | (05h 48m 37.14s , -38d 01m 17.6s) | C | 60 | 17.5 | 3499 | 2020-05-22 16:34:28 | MASTER-SAAO | (05h 39m 28.89s , -38d 02m 50.7s) | C | 60 | 17.5 | 3579 | 2020-05-22 16:35:48 | MASTER-SAAO | (05h 48m 20.22s , -42d 00m 33.7s) | C | 60 | 17.7 | 3579 | 2020-05-22 16:35:48 | MASTER-SAAO | (05h 38m 38.91s , -42d 02m 06.3s) | C | 60 | 17.7 | 3659 | 2020-05-22 16:37:08 | MASTER-SAAO | (05h 37m 49.53s , -39d 59m 44.9s) | C | 60 | 17.8 | 3659 | 2020-05-22 16:37:08 | MASTER-SAAO | (05h 28m 25.89s , -40d 01m 16.6s) | C | 60 | 17.8 | 3738 | 2020-05-22 16:38:27 | MASTER-SAAO | (05h 58m 42.70s , -40d 00m 39.9s) | C | 60 | 18.0 | 3738 | 2020-05-22 16:38:27 | MASTER-SAAO | (05h 49m 18.66s , -40d 02m 11.8s) | C | 60 | 18.1 | 3818 | 2020-05-22 16:39:47 | MASTER-SAAO | (05h 48m 41.82s , -37d 59m 14.3s) | C | 60 | 18.0 | 3818 | 2020-05-22 16:39:47 | MASTER-SAAO | (05h 39m 33.79s , -38d 00m 45.5s) | C | 60 | 18.1 | 3898 | 2020-05-22 16:41:07 | MASTER-SAAO | (05h 48m 14.17s , -41d 59m 59.7s) | C | 60 | 18.1 | 3898 | 2020-05-22 16:41:07 | MASTER-SAAO | (05h 38m 32.84s , -42d 01m 30.8s) | C | 60 | 18.4 | 3977 | 2020-05-22 16:42:26 | MASTER-SAAO | (05h 37m 46.32s , -39d 59m 25.4s) | C | 60 | 18.0 | 3977 | 2020-05-22 16:42:26 | MASTER-SAAO | (05h 28m 22.56s , -40d 00m 55.9s) | C | 60 | 18.5 | 4057 | 2020-05-22 16:43:46 | MASTER-SAAO | (06h 08m 59.53s , -37d 59m 32.4s) | C | 60 | 18.2 | 4057 | 2020-05-22 16:43:46 | MASTER-SAAO | (05h 59m 51.12s , -38d 01m 03.1s) | C | 60 | 18.6 | 4137 | 2020-05-22 16:45:06 | MASTER-SAAO | (06h 09m 47.52s , -42d 00m 18.2s) | C | 60 | 18.4 | 4137 | 2020-05-22 16:45:06 | MASTER-SAAO | (06h 00m 05.69s , -42d 01m 49.1s) | C | 60 | 18.8 | 4616 | 2020-05-22 16:53:05 | MASTER-SAAO | (06h 08m 54.09s , -38d 00m 28.3s) | C | 60 | 17.3 | 4616 | 2020-05-22 16:53:05 | MASTER-SAAO | (05h 59m 51.83s , -38d 01m 56.4s) | C | 60 | 19.2 | 4696 | 2020-05-22 16:54:25 | MASTER-SAAO | (06h 09m 54.67s , -41d 58m 45.8s) | C | 60 | 17.0 | 4696 | 2020-05-22 16:54:25 | MASTER-SAAO | (06h 00m 08.45s , -42d 00m 13.7s) | C | 60 | 19.1 | 4776 | 2020-05-22 16:55:45 | MASTER-SAAO | (05h 59m 17.96s , -35d 59m 57.0s) | C | 60 | 17.5 | 4776 | 2020-05-22 16:55:45 | MASTER-SAAO | (05h 50m 19.06s , -36d 01m 25.2s) | C | 60 | 19.0 | 4855 | 2020-05-22 16:57:04 | MASTER-SAAO | (05h 59m 52.29s , -43d 58m 27.2s) | C | 60 | 17.4 | 4855 | 2020-05-22 16:57:04 | MASTER-SAAO | (05h 49m 46.12s , -43d 59m 55.1s) | C | 60 | 19.4 | 4935 | 2020-05-22 16:58:24 | MASTER-SAAO | (05h 39m 37.90s , -36d 00m 31.1s) | C | 60 | 15.1 | 4935 | 2020-05-22 16:58:24 | MASTER-SAAO | (05h 30m 39.02s , -36d 01m 57.3s) | C | 60 | 18.9 | 5015 | 2020-05-22 16:59:44 | MASTER-SAAO | (05h 28m 20.07s , -38d 01m 39.6s) | C | 60 | 17.9 | 5015 | 2020-05-22 16:59:44 | MASTER-SAAO | (05h 19m 06.88s , -38d 03m 08.5s) | C | 60 | 19.1 | 5300 | 2020-05-22 17:04:29 | MASTER-SAAO | (05h 59m 17.69s , -35d 59m 29.9s) | C | 60 | 15.9 | 5300 | 2020-05-22 17:04:29 | MASTER-SAAO | (05h 50m 26.98s , -36d 01m 00.2s) | C | 60 | 18.6 | 5380 | 2020-05-22 17:05:49 | MASTER-SAAO | (05h 59m 51.30s , -43d 59m 59.0s) | C | 60 | 17.9 | 5380 | 2020-05-22 17:05:49 | MASTER-SAAO | (05h 49m 53.77s , -44d 01m 33.0s) | C | 60 | 19.2 | 5459 | 2020-05-22 17:07:08 | MASTER-SAAO | (05h 30m 43.23s , -36d 01m 05.5s) | C | 60 | 18.8 | 5539 | 2020-05-22 17:08:28 | MASTER-SAAO | (05h 28m 17.98s , -38d 00m 41.6s) | C | 60 | 17.8 | 5539 | 2020-05-22 17:08:28 | MASTER-SAAO | (05h 19m 12.94s , -38d 02m 13.1s) | C | 60 | 19.0 | 5619 | 2020-05-22 17:09:48 | MASTER-SAAO | (05h 37m 34.00s , -43d 59m 09.8s) | C | 60 | 17.7 | 5619 | 2020-05-22 17:09:48 | MASTER-SAAO | (05h 27m 36.81s , -44d 00m 35.0s) | C | 60 | 19.1 | 5698 | 2020-05-22 17:11:07 | MASTER-SAAO | (05h 26m 48.04s , -42d 00m 36.7s) | C | 60 | 17.9 | 5698 | 2020-05-22 17:11:07 | MASTER-SAAO | (05h 17m 09.84s , -42d 01m 59.3s) | C | 60 | 18.7 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.