TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4643 SUBJECT: Possible GRB 060203: optical observations at Asiago DATE: 06/02/04 03:24:10 GMT FROM: Daniele Malesani at SISSA-ISAS,Trieste,Italy S. Piranomonte (INAF/OAR), D. Malesani (SISSA), A. Pizzella, J. Mendez-Abreu, L. Lessio (INAF/OAPd), I. Yegorova (SISSA), and N. Masetti (INAF/IASF Bo) report on behalf of a larger collaboration: We observed the field of the possible GRB 060203 (Swift trigger 180151; Retter et al., GCN 4641) using the 182 cm Copernico telescope located in Asiago (Italy), equipped with the AFOSC camera. Our images were taken in the R filter, under moderate conditions (seeing 1.8 arcsec, thin cirrus). Coaddition of three exposures lasting 10 minutes each one (mean time Feb 4.067 UT, 1.6 h after the trigger) reveals no new sources with respect to the DSS 2, which reaches a comparable depth. This message can be cited.