TITLE:   GCN CIRCULAR
NUMBER:  28975
SUBJECT: Fermi GRB 201201A: Global MASTER-Net observations report 
DATE:    20/12/01 15:30:16 GMT
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-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 201201A ( Fermi GBM team, GCN 28972) errorbox  44316 sec after notice time and 44327 sec after trigger time at 2020-12-01 15:11:02 UT, with upper limit up to  17.1 mag. Observations started at twilight.  The observations began at zenith distance = 30 deg. The sun  altitude  is -11.4 deg. 

The galactic latitude b = -11 deg., longitude l = 64 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1493496

We obtain a following upper limits.  

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

   44358 | 2020-12-01 15:11:02 |      MASTER-Tavrida | (20h 35m 25.58s , +21d 59m 09.7s) |   C |    60 | 17.1 |        
   44644 | 2020-12-01 15:15:49 |      MASTER-Tavrida | (20h 35m 59.02s , +20d 00m 37.3s) |   C |    60 | 15.7 |        
   44725 | 2020-12-01 15:17:09 |      MASTER-Tavrida | (20h 35m 18.93s , +21d 59m 49.8s) |   C |    60 | 16.0 |        
   44805 | 2020-12-01 15:18:30 |      MASTER-Tavrida | (20h 43m 56.87s , +22d 00m 54.7s) |   C |    60 | 16.1 |        
   44900 | 2020-12-01 15:20:05 |      MASTER-Tavrida | (20h 22m 03.16s , +21d 55m 31.5s) |   C |    60 | 15.2 |        
Filter C is a clear (unfiltred) band. 


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