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GCN Circular 29121

Subject
Fermi GRB 201221E: Global MASTER-Net observations report
Date
2020-12-22T05:30:33Z (3 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, 
V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,
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, O.Ershova 
(Irkutsk State University, API),

A. Tlatov, D. Dormidontov 
(Kislovodsk Solar Station of the Pulkovo Observatory),

V. Yurkov, A. Gabovich, Yu. Sergienko 
(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 GRB 201221E ( Fermi GBM team, GCN 29114) errorbox  19065 sec after notice time and 20298 sec after trigger time at 2020-12-22 05:07:05 UT, with upper limit up to  18.7 mag. The observations began at zenith distance = 49 deg. The sun  altitude  is -35.0 deg. 

The galactic latitude b = 16 deg., longitude l = 276 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1508233

We obtain a following upper limits.  

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

   20328 | 2020-12-22 05:07:05 |         MASTER-OAFA | (10h 39m 23.18s , -41d 10m 51.0s) |   C |    60 | 18.6 |        
   20407 | 2020-12-22 05:08:25 |         MASTER-OAFA | (10h 50m 13.21s , -41d 11m 40.1s) |   C |    60 | 18.5 |        
   20487 | 2020-12-22 05:09:44 |         MASTER-OAFA | (10h 26m 46.41s , -35d 13m 03.7s) |   C |    60 | 18.6 |        
   20566 | 2020-12-22 05:11:04 |         MASTER-OAFA | (10h 36m 45.15s , -35d 12m 44.4s) |   C |    60 | 18.7 |        
   20646 | 2020-12-22 05:12:23 |         MASTER-OAFA | (10h 28m 41.13s , -41d 11m 05.1s) |   C |    60 | 18.5 |        
   20934 | 2020-12-22 05:17:11 |         MASTER-OAFA | (10h 51m 32.55s , -39d 10m 36.3s) |   C |    60 | 18.7 |        
   21013 | 2020-12-22 05:18:30 |         MASTER-OAFA | (10h 16m 14.44s , -43d 12m 07.6s) |   C |    60 | 18.5 |        
Filter C is a clear (unfiltred) band. 


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