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GCN Circular 28459

Subject
Fermi GRB 200919B: Global MASTER-Net observations report
Date
2020-09-19T17:30:13Z (4 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-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 200919B ( Fermi GBM team, GCN 28457) errorbox  11193 sec after notice time and 11243 sec after trigger time at 2020-09-19 16:46:14 UT, with upper limit up to  17.3 mag. Observations started at twilight.  The observations began at zenith distance = 79 deg. The sun  altitude  is -11.6 deg. 

The galactic latitude b = -15 deg., longitude l = 158 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1444610

We obtain a following upper limits.  

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

   11273 | 2020-09-19 16:46:14 |      MASTER-Tavrida | (02h 52m 32.33s , +40d 01m 18.7s) |   C |    60 | 16.2 |        
   11434 | 2020-09-19 16:48:55 |      MASTER-Tavrida | (02h 57m 52.35s , +42d 00m 59.1s) |   C |    60 | 16.3 |        
   11837 | 2020-09-19 16:55:37 |      MASTER-Tavrida | (02h 52m 28.23s , +40d 02m 15.8s) |   C |    60 | 17.0 |        
   11917 | 2020-09-19 16:56:58 |      MASTER-Tavrida | (02h 57m 53.34s , +42d 01m 29.4s) |   C |    60 | 16.8 |        
   12159 | 2020-09-19 17:01:00 |      MASTER-Tavrida | (02h 57m 49.58s , +38d 00m 39.2s) |   C |    60 | 16.9 |        
   12321 | 2020-09-19 17:03:41 |      MASTER-Tavrida | (03h 02m 58.94s , +40d 01m 29.9s) |   C |    60 | 17.2 |        
   12482 | 2020-09-19 17:06:22 |      MASTER-Tavrida | (02h 57m 49.81s , +38d 01m 47.5s) |   C |    60 | 17.0 |        
   12562 | 2020-09-19 17:07:43 |      MASTER-Tavrida | (03h 07m 57.80s , +38d 00m 41.9s) |   C |    60 | 16.8 |        
   12905 | 2020-09-19 17:13:25 |      MASTER-Tavrida | (03h 03m 02.43s , +40d 01m 29.2s) |   C |    60 | 17.3 |        
   12985 | 2020-09-19 17:14:46 |      MASTER-Tavrida | (03h 13m 21.88s , +40d 00m 43.2s) |   C |    60 | 17.1 |        
   13227 | 2020-09-19 17:18:47 |      MASTER-Tavrida | (03h 08m 01.60s , +38d 00m 30.1s) |   C |    60 | 17.1 |        
Filter C is a clear (unfiltred) band. 


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