Clusterfit
Show stellar evolution and open clusters in a color-magnitude diagram
This program is centered on a graphical Hertzsprung-Russell or color-magnitude diagram (CMD). It can show animated evolutionary tracks of stars of different masses, for a single star or a population of stars. In addition, it can show the CMD of a large number of existing open clusters, based on scientific survey data, and overlay isochrones (the curve in a CMD from stars born at the same time) to determine the age, distance and interstellar reddening of the cluster. Determining these...