TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2982 SUBJECT: GRB050124: No Swift UVOT Detection of Afterglow Emission DATE: 05/01/26 03:10:48 GMT FROM: Pete Roming at PSU S. Hunsberger (PSU), A. Breeveld (MSSL), P. Roming (PSU), K. Mason, P. Schady (MSSL), M. Ivanushkina (PSU), K. McGowan, T. Poole (MSSL), C. Gronwall (PSU), M. De Pasquale, A. Blustin (MSSL), P. Brown (PSU), S. Rosen, C. James (MSSL), P. Boyd, S. T. Holland, M. Still, W. Landsman (GSFC), P. Smith, B. Hancock (MSSL), S. Koch (PSU), M. Carter, H. Huckle (MSSL), P. Broos (PSU), T. Kennedy (MSSL), S. Barthelmy (GSFC), D. Burrows, J. Nousek, M. Chester (PSU), N. Gehrels (GSFC), K. Hurley (UCB), G. Chincarini (OAB) on behalf of the Swift UVOT team. The Swift Ultra-Violet/Optical Telescope (UVOT) began observations of GRB050124 (GCN 2972) on January 24, 2005, at 14:34:56 UT. The spacecraft did not autonomously slew to the burst since automated slewing was not enabled. The observation was performed as a Target of Opportunity beginning about 3 hours after the burst. Based on comparisons to the USNO-B1.0 Catalogue, we detect no source down to a magnitude of 17.4 in the V-filter for a 100 second UVOT Finding Chart exposure. We caution that the instrument is not yet fully calibrated and that this magnitude limit is an estimate.