Circles in the Heavens Universitätsbibliothek Kassel-Passauer Calendar-70v Passauer Calendar Universitätsbibliothek Kassel, 2° Ms. astron. 1, fol. 70v. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.