  We present an update of our on-going effort to improve the precision of white
dwarf cosmochronology via careful analyses of white dwarf photometry in open
clusters. To improve the precision of white dwarf and main sequence age
analysis, we are developing a new interpretative scheme using a Bayesian
statistical approach that matches observations to simulated stellar clusters.
Here we present our first tests of the Bayesian approach with simulated stellar
clusters with ages of 1, 2, and 4 billion years.
