  Deep near-infrared images of a blank 2'x2' section of sky near the Galactic
north pole taken by Subaru Telescope are presented. The total integration times
of the J and K' bands are 12.1 hours and 9.7 hours, resulting in 5-sigma
limiting magnitudes of 25.1 and 23.5 mag, respectively. The numbers of sources
within these limiting magnitudes found with an automated detection procedure
are 385 in the J band and 350 in K'. Based on photometric measurements of these
sources, we present number count vs. magnitude relations, color vs. magnitude
diagrams, size vs. color relationships, etc. The slope of the galaxy number
count plotted against the AB magnitude scale is about 0.23 in the 22 to 26 AB
magnitude range of both bands. The spatial number density of galaxies as well
as the slopes in the faint-end region given by the Subaru Deep Field (SDF)
survey is consistent with those given by HST-NICMOS surveys as expressed on the
AB magnitude diagram. Several sources having very large J-K' color are found
including a few K' objects without detection at J. In addition, a number of
faint Galactic stars are also detected, most of which are assigned to
M-subdwarfs, together with a few brown dwarf candidates.
