The top of this original manuscript page shows minor foxing—brownish spots caused by aging or moisture—and small ink stains, common in documents of this era.

Report on the Eclipses

of the years 1620 and 1621.

original German: "Bericht von den Finsternissen." In this context, Kepler is providing a "Bericht" (report or account) of "Finsternissen" (eclipses), likely referring to both solar and lunar events. During these years, Kepler was focused on refining his Rudolphine Tables and used these reports to demonstrate the accuracy of his planetary calculations to both the scientific community and his royal patrons.