  High proper motion stars probe several extreme stellar populations, including
nearby objects, Galactic halo stars, and hyper-velocity stars. Extending the
search for high proper motion stars, to faint limits can increase their numbers
and help to identify interesting targets. We conduct a search for faint (r>19.5
mag) high proper motion stars (>~200 mas/yr) by comparing the Sloan Digital Sky
Survey (SDSS) - Data Release (DR) 10 catalog to the Pan-STARRS1-DR1 stacked
image catalog. Our main selection criterion is stars that moved >1.5 arcsec and
up to 7 arcsec between the SDSS and PS1 epochs. We identify 2923 high proper
motion stars, of which 826 do not have proper motion in the GAIA-DR2 catalog
and 565 are not listed in the GAIA-DR2 catalog. Our SDSS-PS1 proper motions are
consistent with the GAIA-measured proper motions with a robust rms of about 10
mas/yr.
