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GCN Circular 34545

Subject
Fermi trigger No 714618399: Global MASTER-Net observations report
Date
2023-08-25T04:30:33Z (8 months ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
legacy email
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) started inspect of the Fermi GRB230825.05 (trigger No 714618399,17h 24m 55.20s , -19d 43m 48.0s, R=12.63) errorbox  1064 sec after notice time and 1100 sec after trigger time at 2023-08-25 01:24:54 UT, with upper limit up to  16.7 mag. The observations began at zenith distance = 26 deg. The sun  altitude  is -41.4 deg. 

The galactic latitude b =  8 deg., longitude l =  6 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2259903

We obtain a following upper limits.  

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

    1190 | 2023-08-25 01:24:54 |         MASTER-OAFA | (17h 26m 18.35s , -16d 14m 30.6s) |   C |   180 | 16.7 |        
    1190 | 2023-08-25 01:24:54 |         MASTER-OAFA | (17h 26m 18.35s , -16d 14m 30.6s) |   C |   180 | 16.7 |        
    1663 | 2023-08-25 01:32:47 |         MASTER-OAFA | (17h 26m 11.69s , -16d 13m 01.9s) |   C |   180 | 16.7 |        
    1663 | 2023-08-25 01:32:47 |         MASTER-OAFA | (17h 26m 11.69s , -16d 13m 01.9s) |   C |   180 | 16.7 |        
    9428 | 2023-08-25 03:42:12 |         MASTER-OAFA | (17h 26m 08.89s , -16d 08m 39.9s) |   C |   180 | 16.1 |        
Filter C is a clear (unfiltred) band. 


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


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