  We investigate the properties of objects in the Subaru Deep Field (SDF),
using public catalogs constructed from images in several optical passbands.
Using a small subset of objects most likely to be stars, we construct a stellar
locus in three-dimensional color space. We then compare the position of all
objects relative to this locus to create larger samples of stars in the SDF
with rough spectral types. The number counts of stars defined in this way are
consistent with those of current models of the Galaxy.
