It should be possible to refine this error box considerably within 24 h, when the high time resolution data become available. No astronomical filter was used during these observations.
Further analysis is in progress.
The data analysis is in progress and an image will be put on the laboratory web page when available. We also intend to continue observations of the optical counterpart tonight as well. Because of the shape of the error box, mosaics were used at each site, limiting the depth of exposure for any particular field. Only R-band observations were made. A log of the observations is given below.