Advertisement
Advertisement
Gregorian telescope
noun
- a telescope similar in design to the Cassegrainian telescope but less widely used.
Gregorian telescope
noun
- a form of reflecting astronomical telescope with a concave ellipsoidal secondary mirror and the eyepiece set behind the centre of the parabolic primary mirror
Discover More
51Թ History and Origins
Origin of Gregorian telescope1
Discover More
51Թ History and Origins
Origin of Gregorian telescope1
C18: named after J. Gregory (died 1675), Scottish mathematician who invented it
Discover More
Example Sentences
Examples have not been reviewed.
But in the Gregorian telescope, the image formed by the principal mirror falls on a second mirror, which is very small, slightly curved, and parallel to the first.
From
Some recent discoveries in astronomy having arrested his mind, and awakened in him a powerful spirit of curiosity, he sought and obtained from a friend the loan of a two-foot Gregorian telescope.
From
Advertisement
Advertisement
Advertisement
Advertisement
Browse