TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4587 SUBJECT: GRB060124: optical observations at Asiago DATE: 06/01/25 02:48:39 GMT FROM: Nicola Masetti at INAF-IASF,Bologna N. Masetti, E. Palazzi, E. Maiorano (INAF-IASF, Bologna), E. Pian (INAF - Astron. Obs. of Trieste), E. Giro (INAF - Astron. Obs. of Asiago), C. Bonoli (INAF - Astron. Obs. of Padova) and D. Malesani (SISSA, Trieste), on behalf of a larger Italian collaboration, report: "We have obtained R-band imaging and an optical spectrum of the OT (Kann, GCN 4577) of GRB060124 (Holland et al. GCN 4570; Mangano et al., GCN 4578) with the 1.82-m "Copernico" telescope (plus AFOSC) of the Astronomical Observatory of Asiago (Italy). The seeing was ~2.5 arcsec during the observations. The R-band observation started on January 24.970 UT, i.e. 0.31 days after the GRB, and lasted 600 s. The OT was well detected; we measure for it a magnitude R = 18.5 +- 0.1 with respect to USNO-A2.0 star U1575_02242799, which has coordinates (J2000) RA = 05 08 31.05, Dec = +69 44 27.9 and magnitude R = 17.3. The 1-hour spectrum, acquired starting on January 24.917 UT, is characterized by a smooth and basically featureless continuum. No emission lines are detected; absorption features are possibly present, but their low S/N prevents us to confirm their reality. This message is citeable."