Lacaille's Catalog of Nebulae of the Southern Sky - http://www.seds.org/messier/xtra/history/lacaille.html
A discussion of Lacaille's catalog, which is mainly of historical interest. Includes the catalog itself. |
Star Clusters - http://www.seds.org/messier/cluster.html
General information on star clusters from SEDS. |
White Dwarfs - http://www.astronomy.ohio-state.edu/~ryden/ast162_4/notes17.html
Lecture notes by Professor Barbara Ryden. |