TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4582 SUBJECT: GRB 060121: OHP optical limits DATE: 06/01/24 21:26:09 GMT FROM: Alain Klotz at CESR-CNRS Klotz, A. (CESR-OMP), Damerdji Y. (OHP), Vachier F. (OHP) report: We imaged the field of GRB 060121 detected by HETE (Arimoto et al. GCNC 4550) with the 120cm at the Observatoire de Haute-Provence - France. First image was acquired 1.65h after the GCN trigger. We do not detected an OT source. According to the limiting magnitude: R>20.0 Magnitude was estimated with the nearby USNO-A2 stars This message may be cited.