Elias Theodor, Anton Heinrich and Franz Ludwig. During the outbreak of the Thirty Years' War from 1618 to 1648 Maria and Elias von Löwen took refuge in the Cistercians convent of Olobok, Poland. They were of protestant religion; her siblings, who stayed in Silesia, converted to Roman Catholocism. During the time Maria and Elias took refuge, Maria used her time to arrange a set of astronomical tables that were based on the Rudolphine Tables, which was written by Johannes Kepler. Cunitz expanded her astronomical tables to include all of the planets at any moment in time. At the end of the Thirty Years' War the couple returned to their home at Pitschen in Silesia. In 1650, Maria privately published of her own expense Urania propitia in German and Latin as a dedication to Holy Roman Emperor Ferdinand III. Urania propitia was a simplification of Kepler's Rudolphine Tables due to their difficulty of producing calculations and applications, because the use of logarithms. Urania propitia Urania propitia is one of the most well known and influential works created by Cunitz. Her cosmology, as exemplified in this work, was a variation of other great, early astronomers such as Tycho Brahe and Johannes Kepler. Urania propitia is a "large quarto with a large number of pages of tables that allows people to determine both the longitude and latitude of each of the planets, also along with other parameters." In this text she revised the complicated and errored calculations found in Kepler's Rudolphine Tables by creating simpler algorithms that reduced the room for human and mathematical error. However, Cunitz did omit small coefficients, leading to minimal errors in Urania propitia. Urania propitia was published in both Latin and German in order to increases its accessibility. Elias von Lowen, Maria's second husband, created the preface to Urania propitia. Elias wanted to make sure the reader of Urania propitia knew that the entirety of this work was exclusively Maria's own work. Elias also wanted to note that he had no part in writing Urania propitia, but he wanted to make clear the fact that he continuously supported his wife Maria. Urania propitia provided new tables, new ephemera, and a more elegant solution to Kepler's Problem, which is to determine the position of a planet in its orbit as a function of time. Today, her book is also credited for its contribution to the development of the German