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GCN Circular 31083

Subject
Fermi trigger No 658686687: Global MASTER-Net observations report
Date
2021-11-15T21:30:17Z (3 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, 
D. Vlasenko, G.Antipov, D.Zimnukhov, V.Senik, T.Pogrosheva, E.Minkina,
A.Chasovnikov, V.Topolev, V.Grinshpun, 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
(Irkutsk State University, API),

A. Tlatov, D. Dormidontov 
(Kislovodsk Solar Station of the Pulkovo Observatory),

A. Gabovich, V.Yurkov 
(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 GRB211115.69 (trigger No 658686687,08h 03m 28.80s , -11d 54m 00.0s, R=6.87) errorbox  7126 sec after notice time and 17506 sec after trigger time at 2021-11-15 21:23:08 UT, with upper limit up to  16.6 mag. The observations began at zenith distance = 77 deg. The sun  altitude  is -64.6 deg. 

The galactic latitude b = 11 deg., longitude l = 232 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1786231

We obtain a following upper limits.  

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

   17536 | 2021-11-15 21:23:08 |      MASTER-Tavrida | (07h 34m 03.00s , -07d 58m 58.0s) |   C |    60 | 16.5 |        
   17615 | 2021-11-15 21:24:27 |      MASTER-Tavrida | (07h 42m 14.54s , -07d 58m 29.9s) |   C |    60 | 16.6 |        
Filter C is a clear (unfiltred) band. 


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