TITLE: GCN GRB OBSERVATION REPORT NUMBER: 858 SUBJECT: GRB001019, Optical Observations DATE: 00/10/23 14:31:06 GMT FROM: Arne A. Henden at USNO/USRA A. Henden (USRA/USNO) D. Kaiser (Crescent Moon Observatory) D. Hohman, R. Pason, B. Aquino (Buffalo Astronomical Association) report: We have observed the error box of GRB001019 as part of the monitoring effort by the AAVSO GRB network. R-band images of the entire error box taken 001021 at 0100 UT with a limiting magnitude of R=18.0, based on USNO-A2.0 reference stars, do not show any new object in comparison with the DSS scans of the POSS-II red plate. Unfiltered images with a similar limiting magnitude and covering about 95 percent of the error box, taken 001021 between 0200 and 0300 UT, do not show any new object.