The subscribed journals and online databases are accessible through the computers at the library and from any computer that is connected to the Jagiellonian University network without the need to log in. The full list of the digital library materials purchased and available can be found on the Jagiellonian Library website under https://bj.uj.edu.pl/en_GB/digital-resources2.
All the staff and students of the Jagiellonian University have the possibility to access the digital materials from the outside of the university network as well, after logging in on the website https://extranet.uj.edu.pl.
The most precious volumes of the Faculty Library, including the collection of the Astronomical Observatory, are incorporated after digitalisation into the Jagiellonian Digital Library in the collection: Faculty of Physics, Astronomy and Applied Computer Science
http://jbc.bj.uj.edu.pl/dlibra/collectiondescription?dirids=93 (in Polish)