His other reputed achievements include the discovery and measurement of Earth's precession, the compilation of the first known comprehensive star catalog from the western world, and possibly the invention of the astrolabe, as well as of the armillary sphere that he may have used in creating the star catalogue. Hipparchus is sometimes called the "father of astronomy",Popular Astronomy, Simon Newcomb, pp 5University of Toronto Quarterly, Volumes 1-3, pp 50 a title first conferred on him by Jean Baptiste Joseph Delambre.Histoire de l'astronomie ancienne, Jean Baptiste Joseph Delambre, Volume 1, p lxi; "Hipparque, le vrai père de l'Astronomie"/"Hipparchus, the true father of Astronomy"
