Below are links to two files containing the different versions (CSV and ASVII) of
a catalog of 38,000 stars with measured apparent
magnitudes at both B and V band, parallaxes and radial velocities from the
Hipparcos satellite catalog which I downloaded from
page at URochester. We can use these to make a simple color-magnitude diagram.
Download the file following the instructions above. Be sure you know in what directory it is located.
Now, let's make the plot shown on the right.