TITLE: GCN CIRCULAR NUMBER: 7789 SUBJECT: GRB 080603 OA candidate DATE: 08/06/03 12:02:13 GMT FROM: Ryan Chornock at UC Berkeley R. Chornock, D. Perley, W. Li, and A. V. Filippenko (UC Berkeley) report that: The Katzman Automatic Imaging Telescope (KAIT) at Lick Observatory slewed to the position of GRB 080603 and detected a new source not present in the DSS at coordinates: (J2000) 18:37:38.06 +62:44:39.3 The new source was first detected in a 60s image starting at 11:28:55 UT and is near magnitude 18.7 in unfiltered and I band images.