TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4838 SUBJECT: GRB 060218/SN 2006aj: K-380 optical observations DATE: 06/02/27 12:07:53 GMT FROM: Sergei Guziy at IAA Elena Pavlenko(CrAO, Crimea), Alex Shlyapnikov (CrAO,Crimea), Sergey Guziy (IAA-CSIC, Granada) , on behalf of a larger collaboration, report: "We imaged the field of GRB 060218 (Cusumano et al., GCNs 4775, 4781) with the K-380 Cassegrain telescope of the Crimean Astrophysical Observatory. Observations of the afterglow have been carried out on 2006 Feb 20 - Feb 23. A series of 2-minute exposures in R(Johnson) band were acquired. Calibration was based on the SDSS catalog. On Feb 20 19:18 - 20:00 UT for 20 combined images, afterglow has magnitude R = 18.00 +/- 0.06 and displayed the brightening of 0.15 mag/day. Further observations are planned." This message may be cited.