TITLE:   GCN CIRCULAR
NUMBER:  31266
SUBJECT: Fermi GRB 211219A: Global MASTER-Net observations report 
DATE:    21/12/19 16:45:16 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-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 211219A ( Fermi GBM team, GCN 31265) errorbox  4877 sec after notice time and 4903 sec after trigger time at 2021-12-19 16:17:06 UT, with upper limit up to  14.3 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -28.1 deg. 

The galactic latitude b = -48 deg., longitude l = 229 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1819804

We obtain a following upper limits.  

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

    4934 | 2021-12-19 16:17:06 |   MASTER-Kislovodsk | (03h 58m 29.45s , -25d 40m 02.5s) |   C |    60 | 14.2 |        
    5913 | 2021-12-19 16:33:25 |   MASTER-Kislovodsk | (03h 58m 23.82s , -25d 41m 23.6s) |   C |    60 | 14.3 |        
    6073 | 2021-12-19 16:36:05 |   MASTER-Kislovodsk | (03h 45m 18.21s , -27d 33m 24.6s) |   C |    60 | 13.0 |        
    6314 | 2021-12-19 16:40:06 |   MASTER-Kislovodsk | (04h 02m 20.29s , -27d 34m 30.9s) |   C |    60 | 12.3 |        
Filter C is a clear (unfiltred) band. 


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