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GCN Circular 30826

Subject
Fermi trigger No 653122278: Global MASTER-Net observations report
Date
2021-09-12T17:30:15Z (3 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-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB210912.29 (trigger No 653122278,19h 38m 48.00s , +17d 55m 48.0s, R=1.33) errorbox  35039 sec after notice time and 35562 sec after trigger time at 2021-09-12 16:43:55 UT, with upper limit up to  16.5 mag. Observations started at twilight.  The observations began at zenith distance = 26 deg. The sun  altitude  is -14.6 deg. 

The galactic latitude b = -2 deg., longitude l = 55 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1718305

We obtain a following upper limits.  

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

   35592 | 2021-09-12 16:43:55 |   MASTER-Kislovodsk | (19h 43m 31.87s , +18d 28m 39.5s) |   C |    60 | 16.4 |        
   35592 | 2021-09-12 16:43:55 |   MASTER-Kislovodsk | (19h 48m 16.06s , +18d 04m 09.4s) |   C |    60 | 16.3 |        
   35842 | 2021-09-12 16:48:05 |   MASTER-Kislovodsk | (19h 41m 05.91s , +20d 21m 52.7s) |   C |    60 | 16.3 |        
   35842 | 2021-09-12 16:48:05 |   MASTER-Kislovodsk | (19h 45m 53.81s , +19d 57m 19.9s) |   C |    60 | 15.5 |        
   35922 | 2021-09-12 16:49:25 |   MASTER-Kislovodsk | (19h 47m 07.26s , +16d 34m 45.7s) |   C |    60 | 16.5 |        
Filter C is a clear (unfiltred) band. 


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