Title

Engraving depicting the use of a cross-staff used to measure altitudes of celestial objects

Caption

Engraving depicting the use of a cross-staff used to measure altitudes of celestial objects. Dated 17th Century

Date

17th century

Credit line

Photo12/Ann Ronan Picture Library

Reference

ARP23A13_310

License type

Rights managed

Available size

60,0Mb (2,0Mb) / 14,3in x 16,3in / 4290 x 4889 (300dpi)

Keywords

17th Century Engraving Engraved Cross-Staff Jacob's Staff Ballastella Fore-Staff Balestilha Measurement Measurements Altitudes Altitude Celestial Celestial Object Astronomical Astronomer History of Astronomy Astrological Astronomy 17th Century