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GCN Circular 33441

Subject
GRB 230204B: MASTER detection of an object near NTT Optical Afterglow Candidate
Date
2023-03-09T17:24:15Z (a year ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V.Lipunov (Lomonosov MSU), D.A.H.Buckley (SAAO), A.Chasovnikov, Ya.Kechin, 
A.Kuznetsov, N.Tiurina, O.Gress, E.Gorbovskoy, G.Antipov, P.Balanutsa, 
K.Zhirkov, D.Vlasenko, V.Senik, D.Kuvshinov,
V.Topolev, Yu.Tselik, D.Cheryasov, I.Gorbunov, Ya.Kechin (Lomonosov Moscow 
State University, SAI, Physics Department);
C.Francile, R. Podesta, F. Podesta (Observatorio Astronomico Felix Aguilar of 
San Juan National University of Argentina),
R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, 
A.Corella,L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory),
N.M.Budnev (ISU,API),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo 
Observatory),
A. Gabovich, V.Yurkov (Blagoveschensk Educational State University)


MASTER-SAAO robotic telescope  (Global MASTER-Net http://observ.pereplet.ru, 
Lipunov et al., 2010, Advances in Astronomy, v.2010, 30L)
center (Kozyrev et al.  GCN 33425) at position  Levan et al., GCN 33439 
31 hours after  trigger (22 30 43UT 1800 sec) ~20.2 (Unfiltered). The 
position accuracity 
is about ~ 1 pix =2".

But there is the Gaia star 3".3 offset with same magnitude.


No object in MPC.
The reduction will be continued.
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