This is from Santiago Ortiz, who has several other excellent projects on his website. My favorite is "Views of the sky" http://moebio.com/exomap/viewsofthesky/2/ which allows you to either view the stars in scaled positions with their size indicating their absolute magnitude, or on a sphere with the stars scaled by relative magnitude (as on Earth). Part #1 (don't miss it!) is located at a link on the bottom of the page, and also cool.