instrument for viewing distant objects, named after the great Italian scientist Galileo Galilei (1564–1642), who first constructed one in 1609. With ... [2 related articles]
A refracting telescope of the type used famously by Galileo, with a convex objective lens and a concave lens as an eyepiece, separated by the difference of their focal lengths. Galilean telescopes are shorter than equivalent Keplerian telescopes and give bright, upright images, but they suffer from ...
[n] - a type of refracting telescope that is no longer used in astronomy
noun a type of refracting telescope that is no longer used in astronomy