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GCN Circular 32407

Subject
Swift GRB 220715B: Global MASTER-Net observations report
Date
2022-07-16T00:10:43Z (2 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, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov,  D.Cheryasov, Ya.Kechin
(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),

L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez 
(INAOE, Guillermo Haro Astrophysics Observatory),

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

A. Gabovich, V.Yurkov 
(Blagoveschensk Educational State University)


MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) was pointed to the Swift GRB 220715B ( E. Troja et al., GCN 32405Loading...
 
 ) errorbox  3230 sec after notice time and 3257 sec after trigger time at 2022-07-15 23:18:59 UT, with upper limit up to  15.1 mag. The observations began at zenith distance = 34 deg. The sun  altitude  is -18.7 deg. 

The galactic latitude b =  5 deg., longitude l = 351 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2032406

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

    3347 |         MASTER-OAFA |   C |   180 | 13.0 |        
    3746 |         MASTER-OAFA |   C |   180 | 14.5 |        
    3957 |         MASTER-OAFA |   C |   180 | 14.3 |        
    4168 |         MASTER-OAFA |   C |   180 | 13.5 |        
    4379 |         MASTER-OAFA |   C |   180 | 14.8 |        
    5784 |         MASTER-OAFA |   C |   180 | 15.1 |        
Filter C is a clear (unfiltred) band. 


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