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GCN Circular 28581

Subject
Fermi trigger No 623846261: Global MASTER-Net observations report
Date
2020-10-08T18:45:08Z (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-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Fermi GRB201008.44 (trigger No 623846261,10h 41m 55.20s , +47d 39m 00.0s, R=3.33) errorbox  27862 sec after notice time and 27870 sec after trigger time at 2020-10-08 18:22:07 UT, with upper limit up to  15.8 mag. The observations began at zenith distance = 70 deg. The sun  altitude  is -41.6 deg. 

The galactic latitude b = 58 deg., longitude l = 165 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1458009

We obtain a following upper limits.  

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

   27900 | 2020-10-08 18:22:07 |        MASTER-Tunka | (10h 38m 38.56s , +47d 47m 29.8s) |   C |    60 | 14.5 |        
   27980 | 2020-10-08 18:23:26 |        MASTER-Tunka | (10h 39m 49.70s , +49d 47m 34.0s) |   C |    60 | 15.8 |        
   28059 | 2020-10-08 18:24:46 |        MASTER-Tunka | (11h 01m 08.85s , +45d 45m 21.4s) |   C |    60 | 13.9 |        
   28139 | 2020-10-08 18:26:05 |        MASTER-Tunka | (10h 14m 38.76s , +47d 47m 51.2s) |   C |    60 | 13.1 |        
Filter C is a clear (unfiltred) band. 


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