GCN Circular 2960
Derek B. Fox and S. Bradley Cenko (Caltech), with Eric J. Murphy (Yale) report on behalf of a larger collaboration: "We have imaged the XRT localization region (Hill et al., GCN 2955) of GRB050117 (Burrows et al., GCN 2951; Sakamoto et al., GCN 2952) with the Hale Telescope + WIRC camera at Palomar Observatory, in the Ks-band, from 03:15 to 03:47 UT on Jan 18, with mean epoch 14.7 hours after the burst. Comparison of our individual images to the 2MASS Atlas reveals four 2MASS catalog objects, and no new sources to the Ks~16 mag depth of that survey, within the XRT localization region. Further analysis of these images is ongoing."