TITLE: GCN CIRCULAR NUMBER: 30907 SUBJECT: Fermi trigger No 654739449: Global MASTER-Net observations report DATE: 21/10/01 02:45:50 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru> 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), 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-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB211001.00 (trigger No 654739449,19h 47m 28.08s , +18d 25m 01.2s, R=34.65) errorbox 5450 sec after notice time and 6352 sec after trigger time at 2021-10-01 01:49:56 UT, with upper limit up to 17.1 mag. The observations began at zenith distance = 76 deg. The sun altitude is -39.8 deg. The galactic latitude b = -4 deg., longitude l = 56 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1738534 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 6383 | 2021-10-01 01:49:56 | MASTER-OAFA | (17h 27m 19.36s , +09d 29m 27.6s) | C | 60 | 17.1 | 6468 | 2021-10-01 01:51:22 | MASTER-OAFA | (17h 29m 43.81s , +07d 34m 29.3s) | C | 60 | 17.1 | 6547 | 2021-10-01 01:52:41 | MASTER-OAFA | (17h 37m 50.28s , +07d 36m 04.4s) | C | 60 | 17.1 | 6706 | 2021-10-01 01:55:20 | MASTER-OAFA | (17h 25m 12.12s , +11d 22m 37.8s) | C | 60 | 17.0 | 6786 | 2021-10-01 01:56:40 | MASTER-OAFA | (17h 33m 17.10s , +11d 24m 11.2s) | C | 60 | 17.1 | 7425 | 2021-10-01 02:07:19 | MASTER-OAFA | (17h 27m 17.27s , +09d 29m 16.9s) | C | 60 | 16.9 | 7505 | 2021-10-01 02:08:39 | MASTER-OAFA | (17h 29m 48.25s , +07d 36m 19.0s) | C | 60 | 17.0 | 7590 | 2021-10-01 02:10:04 | MASTER-OAFA | (17h 37m 45.20s , +07d 35m 33.6s) | C | 60 | 17.0 | 7893 | 2021-10-01 02:15:06 | MASTER-OAFA | (17h 33m 17.83s , +11d 22m 47.6s) | C | 60 | 16.7 | 8052 | 2021-10-01 02:17:46 | MASTER-OAFA | (17h 34m 09.73s , +05d 41m 32.0s) | C | 60 | 17.0 | 8134 | 2021-10-01 02:19:08 | MASTER-OAFA | (17h 34m 33.79s , +09d 28m 39.7s) | C | 60 | 16.6 | 8427 | 2021-10-01 02:24:01 | MASTER-OAFA | (17h 42m 37.24s , +09d 29m 14.6s) | C | 60 | 16.7 | 8513 | 2021-10-01 02:25:27 | MASTER-OAFA | (17h 37m 49.41s , +07d 34m 38.5s) | C | 60 | 16.6 | 8890 | 2021-10-01 02:31:44 | MASTER-OAFA | (17h 31m 33.30s , +03d 47m 16.7s) | C | 60 | 16.7 | 8972 | 2021-10-01 02:33:06 | MASTER-OAFA | (17h 34m 08.26s , +05d 40m 21.3s) | C | 60 | 16.6 | 9212 | 2021-10-01 02:37:06 | MASTER-OAFA | (17h 45m 05.42s , +07d 35m 10.1s) | C | 60 | 16.4 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.