HST Photometry and Astrometry of the Bootes I Ultrafaint Dwarf Galaxy

Bootes I is a nearby, relatively bright ultrafaint dwarf galaxy. This dataset consists of two catalogs of sources in the line-of-sight to this ultrafaint galaxy, produced from deep, optical imaging in three fields, taken with the Hubble Space Telescope Advanced Camera for Surveys, Wide Field Camera in the F606W and F814W filters. The first catalog contains photometry that we produced for the sources in the field. The second catalog contains relative proper motions for a subset of the brighter sources, which we were able to derive with a baseline of ~7 years thanks to the existence of earlier-epoch, archival imaging.