Version History and Errata
Please forward any corrections or criticisms to John O'Hanley.
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.