[vsnet-grb-info 26197] Fermi GRB 200826B: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  28297
SUBJECT: Fermi GRB 200826B: Global MASTER-Net observations report 
DATE:    20/08/27 19:18:52 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at 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 200826B ( Fermi GBM team, GCN 28292) errorbox  640 sec after notice time and 669 sec after trigger time at 2020-08-26 22:20:51 UT, with upper limit up to  16.4 mag. The observations began at zenith distance = 83 deg. The sun  altitude  is -35.3 deg. 

The galactic latitude b = 51 deg., longitude l = 163 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1427827

We obtain a following upper limits.  

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

     734 | 2020-08-26 22:20:51 |      MASTER-Tavrida | (10h 05m 19.01s , +51d 55m 00.9s) |   C |   130 | 14.7 |        
    1129 | 2020-08-26 22:27:01 |      MASTER-Tavrida | (10h 05m 18.37s , +51d 52m 53.7s) |   C |   180 | 14.8 |        
    1558 | 2020-08-26 22:34:11 |      MASTER-Tavrida | (10h 05m 22.98s , +51d 54m 35.8s) |   C |   180 | 14.6 |        
    5955 | 2020-08-26 23:48:27 |      MASTER-Tavrida | (10h 17m 44.99s , +52d 12m 40.0s) |   C |    60 | 13.0 |        
    6197 | 2020-08-26 23:52:29 |      MASTER-Tavrida | (09h 51m 23.97s , +50d 11m 34.2s) |   C |    60 | 14.8 |        
    9451 | 2020-08-27 00:46:43 |      MASTER-Tavrida | (10h 16m 17.78s , +50d 10m 53.5s) |   C |    60 | 15.0 |        
   13932 | 2020-08-27 02:01:24 |      MASTER-Tavrida | (10h 06m 27.15s , +54d 08m 38.9s) |   C |    60 | 16.4 |        
Filter C is a clear (unfiltred) band. 


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