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GCN Circular 28204

Subject
Fermi GRB 200803B: Global MASTER-Net observations report
Date
2020-08-03T18:15:11Z (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),

H.Levato 
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),

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-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 200803B ( Fermi GBM team, GCN 28201) errorbox  558 sec after notice time and 586 sec after trigger time at 2020-08-03 17:02:29 UT, with upper limit up to  18.9 mag. Observations started at twilight.  The observations began at zenith distance = 25 deg. The sun  altitude  is -12.7 deg. 

The galactic latitude b = 20 deg., longitude l = 308 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1413147

We obtain a following upper limits.  

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

     646 | 2020-08-03 17:02:29 |         MASTER-SAAO | (13h 17m 10.58s , -42d 23m 09.6s) |   C |   120 | 18.1 |        
     807 | 2020-08-03 17:04:55 |         MASTER-SAAO | (13h 17m 11.44s , -42d 22m 10.7s) |   C |   150 | 18.2 |        
     807 | 2020-08-03 17:04:55 |         MASTER-SAAO | (13h 07m 35.82s , -42d 23m 16.8s) |   C |   150 | 18.7 |        
     991 | 2020-08-03 17:07:45 |         MASTER-SAAO | (13h 17m 16.35s , -42d 23m 11.8s) |   C |   180 | 18.2 |        
     991 | 2020-08-03 17:07:45 |         MASTER-SAAO | (13h 07m 40.58s , -42d 24m 18.0s) |   C |   180 | 18.9 |        
    1191 | 2020-08-03 17:11:04 |         MASTER-SAAO | (13h 17m 11.97s , -42d 24m 13.2s) |   C |   180 | 18.1 |        
    1191 | 2020-08-03 17:11:04 |         MASTER-SAAO | (13h 07m 36.04s , -42d 25m 19.1s) |   C |   180 | 18.8 |        
Filter C is a clear (unfiltred) band. 


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