TITLE: GCN CIRCULAR NUMBER: 31200 SUBJECT: Fermi trigger No 660868196: Global MASTER-Net observations report DATE: 21/12/11 02:30:19 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, 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-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 GRB211210.94 (trigger No 660868196,21h 50m 14.40s , -07d 38m 24.0s, R=13.62) errorbox 8269 sec after notice time and 8280 sec after trigger time at 2021-12-11 00:47:51 UT, with upper limit up to 17.1 mag. Observations started at twilight. The observations began at zenith distance = 70 deg. The sun altitude is -14.6 deg. The galactic latitude b = -43 deg., longitude l = 49 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1810122 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 8310 | 2021-12-11 00:47:51 | MASTER-OAFA | (20h 48m 11.37s , -07d 41m 37.5s) | C | 60 | 17.1 | 9494 | 2021-12-11 01:07:35 | MASTER-OAFA | (20h 48m 10.87s , -07d 43m 25.6s) | C | 60 | 17.1 | 10504 | 2021-12-11 01:24:25 | MASTER-OAFA | (20h 48m 09.63s , -07d 43m 23.0s) | C | 60 | 17.0 | 11300 | 2021-12-11 01:37:41 | MASTER-OAFA | (20h 54m 50.75s , -09d 36m 50.8s) | C | 60 | 17.1 | 11380 | 2021-12-11 01:39:01 | MASTER-OAFA | (20h 50m 01.04s , -05d 49m 39.8s) | C | 60 | 16.6 | 11459 | 2021-12-11 01:40:20 | MASTER-OAFA | (20h 58m 10.90s , -05d 49m 49.5s) | C | 60 | 16.9 | 11619 | 2021-12-11 01:42:59 | MASTER-OAFA | (20h 57m 08.58s , -13d 24m 54.1s) | C | 60 | 17.0 | 12025 | 2021-12-11 01:49:46 | MASTER-OAFA | (20h 55m 24.22s , -07d 43m 24.9s) | C | 60 | 16.5 | 12107 | 2021-12-11 01:51:08 | MASTER-OAFA | (21h 03m 33.44s , -07d 42m 22.3s) | C | 60 | 16.6 | 12272 | 2021-12-11 01:53:53 | MASTER-OAFA | (21h 05m 12.87s , -17d 12m 17.2s) | C | 60 | 16.9 | 12522 | 2021-12-11 01:58:03 | MASTER-OAFA | (20h 57m 14.15s , -13d 24m 21.7s) | C | 60 | 16.6 | 12606 | 2021-12-11 01:59:27 | MASTER-OAFA | (21h 00m 06.36s , -15d 19m 47.6s) | C | 60 | 16.8 | 12686 | 2021-12-11 02:00:46 | MASTER-OAFA | (21h 08m 22.29s , -15d 18m 14.4s) | C | 60 | 16.7 | 13190 | 2021-12-11 02:09:11 | MASTER-OAFA | (21h 05m 08.27s , -17d 13m 09.4s) | C | 60 | 15.9 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.