Observing with the armillary astrolabe / Jaroslaw Wlodarczyk.
Abstract:
Investigates the merits and limitations of the armillary astrolabe, which served for direct observations of the ecliptic longitudes and latitudes of the heavenly bodies from Antiquity to the end of the 16th century
Journal for the history of astronomy Vol. 18 (1987), p. 173-195