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GCN Circular 33216

Subject
Fermi GRB 230124A: Global MASTER-Net observations report
Date
2023-01-24T15:45:13Z (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-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 GRB 230124A ( Fermi GBM team, GCN 33215Not found
 
 
) errorbox  521 sec after notice time and 554 sec after trigger time at 2023-01-24 15:28:00 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenith distance = 51 deg. The sun  altitude  is -13.9 deg. 

The galactic latitude b = -31 deg., longitude l = 197 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2194256

We obtain a following upper limits.  

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

     609 | 2023-01-24 15:28:00 |   MASTER-Kislovodsk | (04h 24m 10.16s , -01d 16m 01.3s) |   C |   110 | 18.1 |        
     754 | 2023-01-24 15:28:00 |   MASTER-Kislovodsk | (04h 24m 10.17s , -01d 16m 01.3s) |   C |   400 | 19.0 |  Coadd 
     749 | 2023-01-24 15:30:10 |   MASTER-Kislovodsk | (04h 24m 10.23s , -01d 17m 43.1s) |   C |   130 | 18.3 |        
     913 | 2023-01-24 15:32:39 |   MASTER-Kislovodsk | (04h 24m 12.35s , -01d 15m 53.2s) |   C |   160 | 18.4 |        
Filter C is a clear (unfiltred) band. 


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