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GCN Circular 28285

Subject
Fermi GRB 200826A: Global MASTER-Net observations report
Date
2020-08-26T05:00:17Z (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-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 200826A ( Fermi GBM team, GCN 28284) errorbox  18 sec after notice time and 46 sec after trigger time at 2020-08-26 04:30:38 UT, with upper limit up to  18.3 mag. The observations began at zenith distance = 76 deg. The sun  altitude  is -69.3 deg. 

The galactic latitude b = -24 deg., longitude l = 116 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1427181

We obtain a following upper limits.  

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

      51 | 2020-08-26 04:30:38 |         MASTER-OAFA | (00h 16m 30.99s , +38d 58m 23.2s) |   C |    10 | 16.5 |        
     102 | 2020-08-26 04:31:24 |         MASTER-OAFA | (00h 16m 59.22s , +35d 52m 18.4s) |   C |    20 | 17.0 |        
     159 | 2020-08-26 04:32:16 |         MASTER-OAFA | (00h 18m 21.45s , +36d 49m 55.4s) |   C |    30 | 17.2 |        
     214 | 2020-08-26 04:33:06 |         MASTER-OAFA | (00h 18m 17.46s , +36d 48m 57.2s) |   C |    40 | 17.5 |        
     278 | 2020-08-26 04:34:05 |         MASTER-OAFA | (00h 18m 22.91s , +36d 49m 03.8s) |   C |    50 | 17.6 |        
     353 | 2020-08-26 04:35:15 |         MASTER-OAFA | (00h 18m 20.27s , +36d 50m 58.1s) |   C |    60 | 17.8 |        
     442 | 2020-08-26 04:36:34 |         MASTER-OAFA | (00h 18m 20.68s , +36d 49m 32.1s) |   C |    80 | 17.9 |        
     552 | 2020-08-26 04:38:14 |         MASTER-OAFA | (00h 18m 23.06s , +36d 50m 57.8s) |   C |   100 | 17.8 |        
     683 | 2020-08-26 04:40:15 |         MASTER-OAFA | (00h 17m 00.73s , +35d 50m 57.2s) |   C |   120 | 18.1 |        
     837 | 2020-08-26 04:42:34 |         MASTER-OAFA | (00h 17m 02.07s , +35d 51m 59.4s) |   C |   150 | 18.2 |        
    1022 | 2020-08-26 04:45:24 |         MASTER-OAFA | (00h 17m 08.96s , +35d 51m 02.3s) |   C |   180 | 18.3 |        
    1221 | 2020-08-26 04:48:43 |         MASTER-OAFA | (00h 17m 02.21s , +35d 50m 06.3s) |   C |   180 | 18.3 |        
    1421 | 2020-08-26 04:52:03 |         MASTER-OAFA | (00h 17m 08.56s , +35d 50m 36.7s) |   C |   180 | 18.3 |        
Filter C is a clear (unfiltred) band. 


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