TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4830 SUBJECT: GRB 060218/SN 2006aj: RBO optical observations DATE: 06/02/25 07:56:19 GMT FROM: Chris Rodgers at U of Wyoming C. Rodgers (U of Wyoming), D. Allen (U of Wyoming), Marc Herman (U of Wyoming), R. Rodgers (ACSD#1), R. Canterna (U of Wyoming) report on behalf of the Red Buttes Observatory (0.6m) GRB Team as part of the FUN GRB Collaboration. We responded to the rebrightening of GRB 060218/SN 2006aj at the position reported by Kennea et al. (GCN 4776) at 2006/02/25 01:47:07 UT. We took 10 minute exposures in BVRI over 4 different epochs. The data are presented below in magnitudes with a S/N > 14.0. Each of the BRI magnitudes were obtained using the USNO B1.0 catalog, and the V magntudes were determined from Cool et al. (GCN 4777) SDSS g and r data by using Smith et al. (2002) transformation equations. B V R I UT (B) 18.140 17.116 17.240 16.369 01:47:07 18.134 17.294 17.214 16.248 02:46:14 18.188 17.312 17.243 16.301 03:46:55 18.054 17.288 17.212 16.128 04:30:42 This message may be cited.