  We combine imaging data from the Advanced Camera for Surveys (ACS) with
VLT/FORS optical spectroscopy to study the properties of star-forming galaxies
in the z=0.837 cluster CL0152-1357. We have morphological information for 24
star-forming cluster galaxies, which range in morphology from late-type and
irregular to compact early-type galaxies. We find that while most star-forming
galaxies have $r_{625}-i_{775}$ colors bluer than 1.0, eight are in the red
cluster sequence. Among the star-forming cluster population we find five
compact early-type galaxies which have properties consistent with their
identification as progenitors of dwarf elliptical galaxies. The spatial
distribution of the star-forming cluster members is nonuniform. We find none
within $R\sim 500$ Mpc of the cluster center, which is highly suggestive of an
intracluster medium interaction. We derive star formation rates from [OII]
$\lambda\lambda 3727$ line fluxes, and use these to compare the global star
formation rate of CL0152-1357 to other clusters at low and intermediate
redshifts. We find a tentative correlation between integrated star formation
rates and $T_{X}$, in the sense that hotter clusters have lower integrated star
formation rates. Additional data from clusters with low X-ray temperatures is
needed to confirm this trend. We do not find a significant correlation with
redshift, suggesting that evolution is either weak or absent between z=0.2-0.8.
