Mapping the shadow of the earth.

In May, 1555, the Bohemian astronomer, mathematician and astrologer Cyprián Karásek Lvovický (c.1514-1574) dedicated this hybrid print/manuscript (Bayerische Staatsbibliothek Cod.icon 181) treatise on lunar eclipses through 1600 to Ferdinand I, King of Bohemia and Hungary, and future Holy Roman Emperor. It was based upon data established in the Prutenic Tables of Erasmus Reinhold. On fol. 36v the coordinates for a lunar eclipse on 31 January 1580 were entered into blank and printed tables by hand with red ink; folio 37r depicts an idealized schematic for the eclipse above an illustration of a night city like Prague or Augsburg, with a plum-colored moon above the central spire of the cathedral. Torches are held to the stars, and a single figure plays a lute. Incidentally, as we assume the Julian Calendar was used, there was a lunar eclipse from Saros 107 that occurred on 31 Jan. 1580; it would have been visible over Eritrea and western Ethiopa. With some adjustments, it seems the occurrence on a night 25 years in the future was predicted sufficiently enough.