Several years after this post, I stumbled upon the attached drawing of the Virgo constellation.marco wrote: 10 Apr 2010, 14:57 I checked Ripa's Iconologia and found out that the white girdle is, since the times of ancient Rome, a symbol of Virginity (a moral attribute of Diana).
Houghton Library, Harvard University, MS Typ 43, Tabula stellarum fixarum, ca. 1425, Vienna?