Determining the distance to a star cluster

How to determine the distance to a star cluster using its H-R diagram?

Background and Need

Having covered the background on Star Clusters, H-R diagram, Main sequence and the need to study star clusters in our previous article on estimating the age of a cluster, we will discuss about ZAMS. Zero-Age Main Sequence (ZAMS) is the locus of all newly formed stars main sequence (MS) stars on the H-R diagram of a cluster – forming a boundary to the lower left of the main sequence.

Idea

Ideas and Mathematical tools

IEEE Medal of Honor for the year 2007 goes to Prof. Thomas Kailath for "exceptional development of powerful algorithms in the fields of communications, computing, control and signal processing".

How can one work and contribute at highest level in so many varied fields? What is his recipe for success?

Estimating age of a star cluster

How can we determine the age of a star cluster using its H-R diagram.