Version History and Errata
Please forward any corrections or criticisms to John O'Hanley.
May 8, 2017
Some editing and rewriting of Part I.
The beginning was made more concise.
Motivations for learning about the subject were added.
February 27, 2014
Added a download for a small Java tool,
for generating relativistic starfield images.
The tool was created mostly for generating images with a large number of stars, such
as found in the Tycho-2 database.
January 28, 2014
Appearance of a sky full of stars: the diagrams showing the number of visible stars and their
brightness have been updated to use the much larger Tycho-2 catalog, instead of the Yale Bright Star Catalog.
Thus, these diagrams are now much closer to what a human eye would actually see.
January 25, 2014
The site was first posted to the web on this date.