TITLE: GCN CIRCULAR NUMBER: 31067 SUBJECT: Fermi GRB 211109B: Global MASTER-Net observations report DATE: 21/11/09 19:30:09 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru> V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko, G.Antipov, D.Zimnukhov, V.Senik, T.Pogrosheva, E.Minkina, A.Chasovnikov, V.Topolev, V.Grinshpun, 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 (Irkutsk State University, API), 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 GRB 211109B ( Fermi GBM team, GCN 31060) errorbox 54876 sec after notice time and 54904 sec after trigger time at 2021-11-09 17:57:51 UT, with upper limit up to 18.0 mag. Observations started at twilight. The observations began at zenith distance = 65 deg. The sun altitude is -9.9 deg. The galactic latitude b = -1 deg., longitude l = 341 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1779572 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 54934 | 2021-11-09 17:57:51 | MASTER-SAAO | (16h 48m 34.14s , -48d 04m 20.4s) | C | 60 | 15.9 | 55093 | 2021-11-09 18:00:30 | MASTER-SAAO | (16h 35m 02.47s , -46d 10m 32.6s) | C | 60 | 16.2 | 55174 | 2021-11-09 18:01:51 | MASTER-SAAO | (16h 45m 21.48s , -46d 12m 01.6s) | C | 60 | 16.4 | 55254 | 2021-11-09 18:03:11 | MASTER-SAAO | (16h 57m 02.72s , -46d 12m 24.5s) | C | 60 | 16.9 | 55334 | 2021-11-09 18:04:31 | MASTER-SAAO | (16h 54m 46.77s , -44d 16m 48.5s) | C | 60 | 16.4 | 55414 | 2021-11-09 18:05:51 | MASTER-SAAO | (17h 05m 58.43s , -44d 18m 55.1s) | C | 60 | 17.0 | 55497 | 2021-11-09 18:07:13 | MASTER-SAAO | (16h 33m 34.54s , -44d 15m 37.0s) | C | 60 | 16.6 | 55576 | 2021-11-09 18:08:33 | MASTER-SAAO | (16h 44m 40.62s , -44d 16m 49.7s) | C | 60 | 16.9 | 55656 | 2021-11-09 18:09:53 | MASTER-SAAO | (16h 44m 00.25s , -42d 21m 44.9s) | C | 60 | 16.6 | 55736 | 2021-11-09 18:11:13 | MASTER-SAAO | (16h 54m 56.21s , -42d 23m 16.2s) | C | 60 | 17.5 | 55818 | 2021-11-09 18:12:34 | MASTER-SAAO | (16h 36m 29.90s , -48d 05m 21.8s) | C | 60 | 16.8 | 55897 | 2021-11-09 18:13:54 | MASTER-SAAO | (16h 48m 33.85s , -48d 05m 28.5s) | C | 60 | 17.1 | 56057 | 2021-11-09 18:16:34 | MASTER-SAAO | (16h 35m 00.32s , -46d 10m 50.7s) | C | 60 | 17.2 | 56137 | 2021-11-09 18:17:53 | MASTER-SAAO | (16h 45m 27.44s , -46d 10m 06.6s) | C | 60 | 17.3 | 56216 | 2021-11-09 18:19:13 | MASTER-SAAO | (16h 56m 56.95s , -46d 11m 12.3s) | C | 60 | 18.0 | 56296 | 2021-11-09 18:20:33 | MASTER-SAAO | (16h 54m 43.61s , -44d 16m 03.9s) | C | 60 | 17.3 | 56376 | 2021-11-09 18:21:53 | MASTER-SAAO | (17h 06m 01.81s , -44d 17m 36.5s) | C | 60 | 17.9 | 56458 | 2021-11-09 18:23:15 | MASTER-SAAO | (16h 33m 29.32s , -44d 16m 59.5s) | C | 60 | 17.1 | 56538 | 2021-11-09 18:24:34 | MASTER-SAAO | (16h 44m 46.14s , -44d 17m 19.4s) | C | 60 | 17.4 | 56617 | 2021-11-09 18:25:54 | MASTER-SAAO | (16h 44m 03.91s , -42d 21m 45.9s) | C | 60 | 17.0 | 56697 | 2021-11-09 18:27:14 | MASTER-SAAO | (16h 54m 53.35s , -42d 23m 25.3s) | C | 60 | 17.9 | 56779 | 2021-11-09 18:28:36 | MASTER-SAAO | (16h 36m 35.75s , -48d 03m 12.0s) | C | 60 | 17.1 | 56859 | 2021-11-09 18:29:56 | MASTER-SAAO | (16h 48m 28.07s , -48d 04m 33.7s) | C | 60 | 17.3 | 57020 | 2021-11-09 18:32:37 | MASTER-SAAO | (16h 35m 04.14s , -46d 09m 52.0s) | C | 60 | 17.3 | 57100 | 2021-11-09 18:33:57 | MASTER-SAAO | (16h 59m 21.15s , -48d 05m 37.2s) | C | 60 | 17.6 | 57261 | 2021-11-09 18:36:38 | MASTER-SAAO | (17h 07m 26.62s , -46d 10m 34.0s) | C | 60 | 17.7 | 57820 | 2021-11-09 18:45:57 | MASTER-SAAO | (17h 04m 42.08s , -42d 23m 48.3s) | C | 60 | 17.3 | 58143 | 2021-11-09 18:51:19 | MASTER-SAAO | (16h 59m 16.47s , -48d 03m 38.9s) | C | 60 | 17.1 | 58303 | 2021-11-09 18:54:00 | MASTER-SAAO | (17h 07m 20.70s , -46d 11m 59.8s) | C | 60 | 17.5 | 58795 | 2021-11-09 19:02:12 | MASTER-SAAO | (17h 04m 38.84s , -42d 23m 39.9s) | C | 60 | 17.2 | 59119 | 2021-11-09 19:07:35 | MASTER-SAAO | (16h 59m 23.14s , -48d 04m 21.3s) | C | 60 | 17.0 | 59278 | 2021-11-09 19:10:15 | MASTER-SAAO | (17h 07m 28.33s , -46d 11m 27.2s) | C | 60 | 17.4 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.