TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1977 SUBJECT: GRB 030328: Optical observations DATE: 03/03/28 16:37:09 GMT FROM: Paul Price at RSAA, ANU P.A. Price and B.A. Peterson (RSAA, ANU) report: We have observed the afterglow of GRB 030328 with the 40-inch telescope at Siding Spring Observatory + Wide-Field Imager in R-band. From two un-flattened frames taken at Mar 28.54 and 28.63, we derive a power-law decay: R/mag ~ 21.5 + 2.6 log(t/days) based on assuming that the star at J2000 coordinates 12:10:50.7 -9:21:00 (Star B in GCN #1975) is R ~ 16.1 (as in USNO A2.0). The corresponding decay index is alpha = 1.0 +/- 0.1. This message may be cited.