TITLE: GCN CIRCULAR NUMBER: 31080 SUBJECT: Fermi GRB 211112A: Global MASTER-Net observations report DATE: 21/11/13 00:30:12 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-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Fermi GRB 211112A ( Fermi GBM team, GCN 31077) errorbox 31142 sec after notice time and 31169 sec after trigger time at 2021-11-12 23:13:52 UT, with upper limit up to 12.4 mag. Observations started at twilight. The observations began at zenith distance = 52 deg. The sun altitude is -10.3 deg. MASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 211112A errorbox 32320 sec after notice time and 32347 sec after trigger time at 2021-11-12 23:33:29 UT, with upper limit up to 18.6 mag. The observations began at zenith distance = 71 deg. The sun altitude is -37.3 deg. MASTER-Tavrida robotic telescope located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 211112A errorbox 33146 sec after notice time and 33174 sec after trigger time at 2021-11-12 23:47:16 UT, with upper limit up to 18.9 mag. The observations began at zenith distance = 66 deg. The sun altitude is -50.7 deg. The galactic latitude b = 30 deg., longitude l = 234 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1783555 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 31200 | 2021-11-12 23:13:52 | MASTER-Tunka | (09h 22m 36.19s , -00d 36m 07.1s) | C | 60 | 12.4 | Coadd 31600 | 2021-11-12 23:20:31 | MASTER-Tunka | (09h 24m 18.50s , -04d 23m 10.4s) | C | 60 | 12.3 | Coadd 32378 | 2021-11-12 23:33:29 | MASTER-SAAO | (09h 06m 42.71s , -06d 24m 07.7s) | C | 60 | 17.5 | 32457 | 2021-11-12 23:34:49 | MASTER-SAAO | (09h 14m 52.71s , -06d 24m 50.7s) | C | 60 | 16.7 | 32537 | 2021-11-12 23:36:09 | MASTER-SAAO | (09h 04m 58.14s , -04d 32m 08.9s) | C | 60 | 17.6 | 32617 | 2021-11-12 23:37:29 | MASTER-SAAO | (09h 13m 06.50s , -04d 31m 26.6s) | C | 60 | 16.7 | 32696 | 2021-11-12 23:38:48 | MASTER-SAAO | (09h 03m 52.74s , -02d 36m 31.4s) | C | 60 | 17.1 | 32776 | 2021-11-12 23:40:08 | MASTER-SAAO | (09h 11m 53.54s , -02d 37m 50.9s) | C | 60 | 16.2 | 32936 | 2021-11-12 23:42:48 | MASTER-SAAO | (08h 56m 37.29s , -02d 37m 25.4s) | C | 60 | 17.3 | 33204 | 2021-11-12 23:47:16 | MASTER-Tavrida | (09h 23m 44.30s , +01d 36m 12.8s) | C | 60 | 18.0 | 33283 | 2021-11-12 23:48:35 | MASTER-Tavrida | (09h 19m 08.04s , -06d 01m 46.7s) | C | 60 | 17.9 | 33563 | 2021-11-12 23:53:15 | MASTER-Tavrida | (09h 27m 15.72s , -05d 59m 49.1s) | C | 60 | 17.7 | 33872 | 2021-11-12 23:58:23 | MASTER-SAAO | (09h 03m 22.05s , -00d 43m 23.7s) | C | 60 | 17.6 | 33951 | 2021-11-12 23:59:43 | MASTER-SAAO | (09h 11m 17.81s , -00d 44m 08.8s) | C | 60 | 17.6 | 34101 | 2021-11-13 00:02:13 | MASTER-Tavrida | (09h 08m 59.29s , -02d 11m 53.4s) | C | 60 | 18.2 | 34145 | 2021-11-13 00:02:57 | MASTER-SAAO | (08h 57m 46.02s , -04d 31m 03.0s) | C | 60 | 18.6 | 34180 | 2021-11-13 00:03:32 | MASTER-Tavrida | (09h 15m 50.90s , +01d 35m 10.2s) | C | 60 | 18.6 | 34225 | 2021-11-13 00:04:17 | MASTER-SAAO | (09h 06m 44.08s , -06d 26m 14.6s) | C | 60 | 18.6 | 34260 | 2021-11-13 00:04:51 | MASTER-Tavrida | (09h 23m 44.59s , +01d 34m 16.7s) | C | 60 | 18.7 | 34305 | 2021-11-13 00:05:37 | MASTER-SAAO | (09h 14m 49.51s , -06d 24m 28.8s) | C | 60 | 18.4 | 34339 | 2021-11-13 00:06:10 | MASTER-Tavrida | (09h 19m 14.03s , -06d 01m 19.1s) | C | 60 | 18.4 | 34385 | 2021-11-13 00:06:56 | MASTER-SAAO | (09h 04m 56.29s , -04d 31m 20.6s) | C | 60 | 17.2 | 34418 | 2021-11-13 00:07:29 | MASTER-Tavrida | (09h 02m 10.72s , -04d 07m 53.5s) | C | 60 | 18.7 | 34497 | 2021-11-13 00:08:48 | MASTER-Tavrida | (09h 10m 14.75s , -04d 06m 18.1s) | C | 60 | 18.7 | 34576 | 2021-11-13 00:10:07 | MASTER-Tavrida | (09h 27m 11.10s , -06d 00m 33.3s) | C | 60 | 18.5 | 34655 | 2021-11-13 00:11:26 | MASTER-Tavrida | (09h 00m 34.13s , -00d 19m 08.6s) | C | 60 | 18.5 | 34734 | 2021-11-13 00:12:46 | MASTER-Tavrida | (09h 08m 27.76s , -00d 19m 58.1s) | C | 60 | 18.7 | 34949 | 2021-11-13 00:16:21 | MASTER-Tavrida | (09h 24m 13.75s , -02d 11m 37.0s) | C | 60 | 18.7 | 35028 | 2021-11-13 00:17:40 | MASTER-Tavrida | (09h 01m 06.74s , -02d 13m 06.9s) | C | 60 | 18.5 | 35107 | 2021-11-13 00:18:59 | MASTER-Tavrida | (09h 08m 59.53s , -02d 13m 55.5s) | C | 60 | 18.7 | 35186 | 2021-11-13 00:20:18 | MASTER-Tavrida | (09h 15m 50.44s , +01d 34m 17.3s) | C | 60 | 18.9 | 35265 | 2021-11-13 00:21:37 | MASTER-Tavrida | (09h 23m 47.45s , +01d 36m 01.0s) | C | 60 | 18.7 | 35345 | 2021-11-13 00:22:56 | MASTER-Tavrida | (09h 19m 12.54s , -06d 01m 18.0s) | C | 60 | 18.5 | 35424 | 2021-11-13 00:24:16 | MASTER-Tavrida | (09h 02m 13.88s , -04d 06m 07.5s) | C | 60 | 18.8 | 35503 | 2021-11-13 00:25:35 | MASTER-Tavrida | (09h 10m 10.03s , -04d 06m 55.9s) | C | 60 | 18.7 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.