TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1377 SUBJECT: GRB 020418: Optical observations DATE: 02/04/19 11:35:58 GMT FROM: Paul Price at RSAA, ANU at CIT P.A. Price, B.P. Schmidt (RSAA, ANU) and T.S. Axelrod (Arizona) report: We have observed the error box of GRB 020418 (GCN #1376) with the robotic MSO 50-inch telescope + MACHO imager at 2002 Apr 19.42 UT (approximately 25.5 hours after the GRB) with 3 x 300 sec exposures. The combined image covers the entire error box down to a limiting magnitude of R ~ 21.1 mag, based on comparison with USNO-A2.0 magnitudes. We do not find any convincing afterglow candidate upon visual comparison with the second Digitised Sky Survey down to the plate limit, R ~ 20.5 mag. Further observations are planned. This message may be cited.