GCN Circular 10328
Adria C. Updike, Dieter H. Hartmann (Clemson University) and Robert Berrington (Ball State University) report: We observed the field of the Swift-detected GRB 100115A (Cummings et al., GCN 10325) with the 0.9m SARA telescope located at Kitt Peak National Observatory beginning 15 hours and 20 minutes after the BAT detection under good conditions. In a single 1200 sec exposure, we detect a source within the XRT error circle (Margutti et al., GCN 10326) around R ~ 22 mag (as compared to USNO B.1 catalog field stars). There is no corresponding counterpart in either SDSS or Sloan. The Sloan survey goes deeper than our image, indicating the new source in the XRT error circle is a potential candidate for the afterglow of GRB 100115A. No statement about variability can be made at this time; further observations are encouraged.