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GCN Circular 29468

Subject
Fermi trigger No 634659312: Global MASTER-Net observations report
Date
2021-02-10T23:30:16Z (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-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 GRB210210.59 (trigger No 634659312,19h 29m 52.80s , +36d 35m 24.0s, R=7.78) errorbox  32080 sec after notice time and 32122 sec after trigger time at 2021-02-10 23:10:29 UT, with upper limit up to  16.8 mag. The observations began at zenith distance = 79 deg. The sun  altitude  is -56.3 deg. 

The galactic latitude b =  9 deg., longitude l = 70 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1544431

We obtain a following upper limits.  

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

   32152 | 2021-02-10 23:10:29 |      MASTER-Tavrida | (18h 56m 17.10s , +42d 11m 02.9s) |   C |    60 | 16.4 |        
   32152 | 2021-02-10 23:10:29 |      MASTER-Tavrida | (19h 04m 14.13s , +42d 08m 41.4s) |   C |    60 | 16.0 |        
   32319 | 2021-02-10 23:13:15 |      MASTER-Tavrida | (19h 11m 33.26s , +44d 11m 30.3s) |   C |    60 | 16.8 |        
   32319 | 2021-02-10 23:13:16 |      MASTER-Tavrida | (19h 19m 46.16s , +44d 09m 13.2s) |   C |    60 | 14.7 |        
Filter C is a clear (unfiltred) band. 


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