This manuscript, produced in the first half of the 9th century in
Fulda, contains two astronomical texts: several excerpts of the
Aratus latinus and the Aratea by Germanicus with explanatory
scholia, illustrations of the 34 constellations and a (now removed)
drawing of the entire night sky. The Aratea, based on the
astronomical didactic poem by Aratus of Soli, served as
illustrative source for the astronomical background knowledge
required for teaching the computus (calculating the date of Easter)
at the school of the Fulda Monastery.