The Observatory's suite of technical equipment is complemented by a Library and Archives that is one of the premier specialist collections of its kind in the UK and Ireland. The library, archives and museum collection together comprise a unique and growing collection of historic books and manuscripts, as well as images, photographic plates, scientic instruments, clocks and other artefacts concerning the development of astronomy in the UK and Ireland over more than two hundred years. These rank amongst the leading collections of their kind in the UK and Ireland. In recent years more than 25,000 records have been added to the on-line, publicly accessible archives and.
