TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2912 SUBJECT: GRB041224: ROTSE-III Optical Observations DATE: 04/12/25 03:32:43 GMT FROM: Eli Rykoff at Univ. of Michigan/ROTSE E. Rykoff, T. McKay, H. Swan (U. Michigan) report on behalf of the ROTSE collaboration: ROTSE-IIIc, located at the H.E.S.S. sit at Mt. Gamsberg, Namibia, responded to Swift GRB041224 (GCN#2908). A manual response was initiated at 23:20:41 UT, 3 hours after the burst. We took 10 5-s exposures followed by 250 20-s exposures. All the images were taken with >95% moon illumination. The unfiltered images were calibrated relative to USNO A2.0. Individual images have limiting magnitudes around 17.2. Comparison to DSS (second epoch) reveals no new sources within the 3-sigma error circle to a limiting magnitude of 18.5 for stacks of 10 images taken during the first hour of observation.