Here the GRB counterpart after 1h exposure with G (RAPAS A) filter.
Or it is the background galaxy… Limiting magnitude is 20 at S/N=5.
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Congratulations!
When did you perform these observations? How do they compare to other reports (e.g. via GCN: GCN Viewer)
The background galaxy is apparently at i ~ 22.8 (see GCN - Circulars - 38808 - GRB 250103A: NOT optical observations)