How do I get 24-hour access to the Library? (Also known as: My card doesn't work!)

24 hour access via ID card is linked to building access, which is linked to the CfA staff database. Smithsonian Astrophysical Observatory (SAO) and Harvard College Observatory (HCO) Employees and Official Visitors, Harvard Astronomy Department Graduate Students and other Center for Astrophysics (CfA) affiliates who have a current entry in the CfA Staff Database are eligible for 24-hour access to the Library.

If you do have 24 hour building access, but your card does not work in the Library doors, contact Judy Schwab in the Business Office, B-115, 617-495-7540.

See also Hours, Parking, Map