Distinctive epithet of the form of telescope invented by Galileo. Discovered by Galileo, as Galilean satellite, any of the largest four moons of…

Astronomy. Designating a refracting telescope in which chromatic aberration in the objective lens is corrected by a second lens placed at some…

Of, pertaining to, or designating a telescope or part of a telescope in which rays are bent to focus at a fixed point away from the axis of the…

Of an instrument: that employs autocollimation.

Of or pertaining to Kepler or his discoveries and investigations; applied spec. to (a) motion, orbits, and trajectories such as occur when one body…

Of a telescope.

Designating or relating to a sturdy, inexpensive form of Newtonian telescope with a large aperture and short focal length, used especially by amateur…