To download one of our digitised versions of these rare books, click on the book you are interested in. You can download our books in four different versions:
Black & White - low and medium quality
Colour - low and medium quality
High quality versions of the books can be obtained on request. Medium quality allows you to see every detail of the book, without any obvious compression artifacts. Low quality versions are compiled as such, that the quality is still good, but if you look close enough, you can see compression artifacts.
If you cannot find the book from the catalogue you are interested in here, you can send us an request and we will consider your wish in our next digitalisation run.
If the "Digital Rare Book Collection" at the Vienna University Observatory was helpful for your work, the following acknowledgment would be appreciated:
This work has made use of the "Digital Rare Book Collection" at the Vienna University Observatory, located at http://www.univie.ac.at/hwastro