TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1267 SUBJECT: GRB 020305: Candidate optical afterglow DATE: 02/03/12 10:03:43 GMT FROM: Paul Price at RSAA, ANU at CIT P.A. Price, D.W. Fox (Caltech) report on behalf of the REACT GRB Collaboration: We have observed the error box of GRB 020305 (GCN ##1262,1263) with the Palomar 48-inch + unfiltered CCD at 2002 Mar 9.34. Our 7 x 120 sec exposures cover the entire IPN+HETE error box. PSF-matched image subtraction of our combined image from Mar 6.33 (GCN #1261) reveals the presence of a point-like source that was present on Mar 6 and not detected on Mar 9 to a limiting magnitude of R ~ 21.5 mag. The source is not present on the DSS. Coordinates of the source are: RA: 12:42:27.94 DEC: -14:18:11.8 J2000 with an estimated uncertainty of approximately 1 arcsec. Further observations are underway to ascertain the veracity of this afterglow candidate. This message may be cited.