Almagstum novum was one of the earliest published books on astronomy. Riccoli gave names to craters and mountains on the moon. Most of the names are still in use.
A competent astronomer and Jesuit priest, Riccoli published his massive New Almagest, a work that treated the efforts of both Copernicus and Kepler but which sought to show that the earth does not move. It was deemed a reference book and textbook for astronomers immediately upon its publication and is still the single most important reference work in the history of astronomy from 1550-1650.
Originally planned in two volumes; only the first volume, in two parts appeared. Almagestum novum was acquired by Fondren Library as part of its celebration to mark its one millionth volume in 1979.