Objective lens of the astronomical bezel of Galilee or Galileo Galilei (1564-1642). 1609-1610. Museo
Concave lens use – Galileo's telescope
Making a Galilean Telescope
Galileo FS-80Z 800mm x 80mm Reflector Telescope Hammertone - Walmart.com
The sidereal messenger of Galileo Galilei : and a part of the preface to Kepler's Dioptrics containing the original account of Galileo's astronomical discoveries . GALILEOS BROKEN LENS. EXHIBITED IN THE LOAN