Electronic resources
Calames (archival collections)
Cosmos (museum collections)
Digital library
It is one of the most beautiful astronomical-astrophysical libraries in the world. The Library has two core missions: providing researchers with the most complete and relevant documentation and services, preserving and enhancing a 350-year-old heritage which still expands today.
Although the Library is mainly devoted to Paris Observatory scientists, it is also accessible to other audiences, mainly researchers in astronomy-astrophysics and historians.