GCN Circular 29780
M. Jelinek, J. Strobl, R. Hudec, C. Polasek (ASU CAS Ondrejov) report: We observed the position of the Fermi/GBM GRB 210410A (Fermi, GCNC 29777) with the D50 robotic telescope of the Astronomical Institute Ondrejov, near Prague, Czech Republic. We performed a series of 120 s unfiltered exposures starting 56 min after the trigger. Within the Swift/XRT error box (Melandri et al. GCNC 29778) we detect a fading object at (269.7542, 45.3629) (17:59:01.00 +45:21:46.6 J2000 +/-0.3"). The preliminary magnitude 103 min after the trigger was r'(AB) = 21.5 +/- 0.2 and the object seems to fade with alpha ~ 0.95 +/- 0.27.