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GCN Circular 34350

Fermi trigger No 712991593: Global MASTER-Net observations report
2023-08-06T08:48:18Z (10 months ago)
Vladimir Lipunov at Moscow State U/Krylov Obs <>
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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:, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB230806.22 (trigger No 712991593,04h 03m 14.40s , +19d 34m 12.0s, R=2.32) errorbox  229 sec after notice time and 9907 sec after trigger time at 2023-08-06 07:58:16 UT, with upper limit up to  17.2 mag. The observations began at zenith distance = 73 deg. The sun  altitude  is -43.1 deg. 

The galactic latitude b = -24 deg., longitude l = 173 deg.

Real time updated cover map and OT discovered available here:

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment

    9998 | 2023-08-06 07:58:16 |         MASTER-OAFA | (04h 01m 44.05s , +19d 29m 23.0s) |   C |   180 | 16.9 |        
   10209 | 2023-08-06 08:01:47 |         MASTER-OAFA | (04h 01m 43.93s , +19d 30m 23.6s) |   C |   180 | 17.2 |        
   10421 | 2023-08-06 08:05:19 |         MASTER-OAFA | (04h 01m 48.55s , +19d 29m 24.8s) |   C |   180 | 17.1 |        
Filter C is a clear (unfiltred) band. 

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

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