TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2813 SUBJECT: GRB 041016: Optical limit DATE: 04/10/16 08:30:21 GMT FROM: Ken ichi Torii at RIKEN K. Torii (Osaka University) reports: A part of the error region of GRB 041016 (HETE trigger 3578) was observed with a remote telescope (0.30-m Cassegrain equipped with FLI-IMG1024S CCD camera and clear filter) in the New Mexico Skies observatory. The observation started at 2004 October 16, 07:14 UT and 300-s integration was repeated. The observed field was 24x24 arcminutes centered at (R.A., Dec.) = (01 44 53, -04 17 14) (J2000). Preliminary comparison of the first 5 frames with the USNO-A2.0(R) catalog does not show a new object brighter than ~16 mag. ===