TITLE: GCN CIRCULAR NUMBER: 32282 SUBJECT: Fermi trigger No 678058621: Global MASTER-Net observations report DATE: 22/06/28 02:45:30 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-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 GRB220627.90 (trigger No 678058621,13h 48m 04.80s , -28d 28m 48.0s, R=1.16) errorbox 4209 sec after trigger time at 2022-06-27 22:47:05 UT, with upper limit up to 19.1 mag. The observations began at zenith distance = 59 deg. The sun altitude is -81.2 deg. MASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB220627.90 errorbox 11454 sec after trigger time at 2022-06-28 00:47:50 UT, with upper limit up to 18.4 mag. The observations began at zenith distance = 10 deg. The sun altitude is -38.8 deg. The galactic latitude b = 32 deg., longitude l = 318 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2017070 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 4239 | 2022-06-27 22:47:05 | MASTER-SAAO | (13h 47m 58.28s , -30d 53m 47.7s) | C | 60 | 19.0 | 4319 | 2022-06-27 22:48:25 | MASTER-SAAO | (13h 57m 11.65s , -30d 54m 51.9s) | C | 60 | 19.1 | 5292 | 2022-06-27 23:04:37 | MASTER-SAAO | (13h 47m 56.68s , -30d 54m 41.3s) | C | 60 | 18.3 | 5371 | 2022-06-27 23:05:57 | MASTER-SAAO | (13h 57m 19.43s , -30d 53m 25.0s) | C | 60 | 19.0 | 6326 | 2022-06-27 23:21:52 | MASTER-SAAO | (13h 47m 54.91s , -30d 54m 27.3s) | C | 60 | 17.9 | 6406 | 2022-06-27 23:23:11 | MASTER-SAAO | (13h 57m 20.57s , -30d 54m 23.5s) | C | 60 | 18.9 | 7539 | 2022-06-27 23:42:05 | MASTER-SAAO | (13h 49m 43.42s , -28d 59m 48.6s) | C | 60 | 17.7 | 7619 | 2022-06-27 23:43:25 | MASTER-SAAO | (13h 58m 47.90s , -28d 58m 18.9s) | C | 60 | 18.4 | 8469 | 2022-06-27 23:57:35 | MASTER-SAAO | (13h 49m 50.30s , -28d 57m 46.6s) | C | 60 | 17.5 | 8548 | 2022-06-27 23:58:54 | MASTER-SAAO | (13h 58m 50.30s , -28d 58m 50.1s) | C | 60 | 17.8 | 11484 | 2022-06-28 00:47:50 | MASTER-OAFA | (13h 49m 50.31s , -29d 46m 50.9s) | C | 60 | 18.3 | 11595 | 2022-06-28 00:49:41 | MASTER-OAFA | (13h 58m 54.45s , -29d 47m 38.9s) | C | 60 | 18.4 | 12598 | 2022-06-28 01:06:24 | MASTER-OAFA | (13h 49m 49.57s , -29d 47m 47.7s) | C | 60 | 18.2 | 12709 | 2022-06-28 01:08:15 | MASTER-OAFA | (13h 58m 54.10s , -29d 48m 52.6s) | C | 60 | 18.3 | 13524 | 2022-06-28 01:21:50 | MASTER-OAFA | (13h 49m 49.90s , -29d 47m 56.4s) | C | 60 | 18.2 | 13636 | 2022-06-28 01:23:41 | MASTER-OAFA | (13h 58m 53.36s , -29d 49m 01.1s) | C | 60 | 18.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.