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GCN Circular 31282

Subject
Fermi GRB 211222A: Global MASTER-Net observations report
Date
2021-12-22T23:15:11Z (3 years ago)
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-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB 211222A ( Fermi GBM team, GCN 31280Loading...
 
 ) errorbox  16726 sec after notice time and 16754 sec after trigger time at 2021-12-22 23:05:26 UT, with upper limit up to  16.8 mag. The observations began at zenith distance = 78 deg. The sun  altitude  is -63.5 deg. 

The galactic latitude b = -21 deg., longitude l = 264 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1824183

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   16785 | 2021-12-22 23:05:26 |          MASTER-IAC | (06h 15m 48.74s , -44d 20m 10.0s) |   C |    60 | 16.8 |        
   16785 | 2021-12-22 23:05:26 |          MASTER-IAC | (06h 27m 13.44s , -44d 25m 12.1s) |   C |    60 | 16.8 |        
   16864 | 2021-12-22 23:06:46 |          MASTER-IAC | (07h 01m 51.93s , -38d 37m 38.8s) |   C |    60 | 16.8 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.