TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1286 SUBJECT: GRB020321 optical observations DATE: 02/03/21 18:18:12 GMT FROM: Arne A. Henden at USNO/USRA A. Henden and P. Nelson (Ellinbank Observatory, Australia) on behalf of the AAVSO International GRB Network, report: The Ellinbank 320mm f/5 Newtonian with an ST-8E CCD were used on 020321 UT to image the BeppoSAX WFC error circle for GRB020321 (Gandolfi, GCN 1281; Guidorzi et al., GCN 1284). A total of 30 x 30 sec images in Rc were taken from 12:22 to 12:47 UT (8.2hrs after the burst), covering a 20x30 arcmin field that includes the entire BeppoSAX error circle. The ESO R and AAO R plate scans from the USNO PMM pixel database were used to blink the resultant coadded image. The limiting magnitude is estimated to be Rc=19. Two faint objects, near the limiting magnitude, do not appear on the ESO or AAO plates, and are not included in the minor planet database. These two objects are at: 16:11:30.00 -83:39:12.1 J2000 16:12:52.00 -83:40:13.9 with position errors of about 0.5arcsec. These may be artifacts of the processing, but are the only objects inside of the WFC error circle that do not also appear on the photographic plates. In particular, we find nothing new at our limiting magnitude inside the recent NFI error circle (Gandolfi, GCN 1285). The AAVSO would like to thank the Curry Foundation for supporting the AAVSO International GRB Network.