TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5125 SUBJECT: GRB 060512: P60 Observations DATE: 06/05/13 06:35:23 GMT FROM: S. Bradley Cenko at Caltech S. B. Cenko (Caltech) reports on behalf of a larger collaboration: We have imaged the field of GRB060512 (Cummings et al., GCN 5117) with the automated Palomar 60-inch Telescope. Observations consisted of 5 x 150 s exposures taken in the Kron R band. The mean epoch of our observations was approximately 03:50 13 May 2006 UT (~ 4.6 hrs after the burst). We clearly detect the afterglow and measure an R-band magnitude of R ~ 20.1 (calculated with respect to the USNO-B catalog). Comparing with the early afterglow detection reported by Mundell and Steele (GCN 5119), we measure a decay index of alpha ~ 1.0. We note this is slightly steeper than the value reported by Malesani et al. (GCN 5122), although not significant enough to claim a break in the light curve. Further observations are underway.