Rømer, Ole
Links
Rundetaarn: Centuries of Astronomy in Denmark
http://www.rundetaarn.dk/engelsk/observatorium/history.htm
Includes section on Rømers works.
Ole Rømer Museet
Copenhagen museum about his works in astronomy.
Wikipedia: Ole Rømer
http://www.wikipedia.org/wiki/Ole_Romer
Short crosslinked encyclopedic article.