Rømer, Ole
Links
Catalog of the Scientific Community: Roemer, Ole Christensen
http://es.rice.edu/ES/humsoc/Galileo/Catalog/Files/roemer.html
Background data on the scientist.
Ole Rømer Museet
Copenhagen museum about his works in astronomy.
Roemer, Ole
http://64.1911encyclopedia.org/R/RO/ROEMER_OLE.htm
Article from the 1911 Encyclopedia Britannica.
Rundetaarn: Centuries of Astronomy in Denmark
http://www.rundetaarn.dk/engelsk/observatorium/history.htm
Includes section on Rømers works.
Wikipedia: Ole Rømer
http://www.wikipedia.org/wiki/Ole_Romer
Short crosslinked encyclopedic article.