Definition of Gregorian telescope in English:

Gregorian telescope

nounɡrɪˈɡɔːrɪən

An early reflecting telescope in which light reflected from a concave elliptical secondary mirror passes through a hole in the primary mirror. It was rendered obsolete by the introduction of Newtonian and Cassegrain telescopes.
Example sentencesExamples
- Mostly, he made mirrors for Gregorian telescopes, which were compact and produced upright images, suitable for royalty and nobility, who used them to look out their castle windows.
- An off-axis Gregorian telescope with correctly chosen offset angles will always be optically superior to a similar on-axis configuration.
- Therefore, for certain applications, Gregorian telescopes have desirable advantages over other telescope designs.
- He subsequently became the most successful London manufacturer of Gregorian telescopes, which were named after their original inventor.
- There are two different classes of two-mirror telescopes: Cassegrain telescopes and Gregorian telescopes.

Origin

Mid 18th century: named after James Gregory (1638–75), the Scottish mathematician who invented it.

Definition of Gregorian telescope in US English:

Gregorian telescope

noun

An early reflecting telescope in which light reflected from a concave elliptical secondary mirror passes through a hole in the primary mirror. It was rendered obsolete by the introduction of Newtonian and Cassegrain telescopes.
Example sentencesExamples
- Therefore, for certain applications, Gregorian telescopes have desirable advantages over other telescope designs.
- He subsequently became the most successful London manufacturer of Gregorian telescopes, which were named after their original inventor.
- Mostly, he made mirrors for Gregorian telescopes, which were compact and produced upright images, suitable for royalty and nobility, who used them to look out their castle windows.
- An off-axis Gregorian telescope with correctly chosen offset angles will always be optically superior to a similar on-axis configuration.
- There are two different classes of two-mirror telescopes: Cassegrain telescopes and Gregorian telescopes.

Origin

Mid 18th century: named after James Gregory (1638–75), the Scottish mathematician who invented it.

单词	Gregorian telescope
释义	Definition of Gregorian telescope in English: Gregorian telescope nounɡrɪˈɡɔːrɪən An early reflecting telescope in which light reflected from a concave elliptical secondary mirror passes through a hole in the primary mirror. It was rendered obsolete by the introduction of Newtonian and Cassegrain telescopes. Example sentencesExamples Mostly, he made mirrors for Gregorian telescopes, which were compact and produced upright images, suitable for royalty and nobility, who used them to look out their castle windows. An off-axis Gregorian telescope with correctly chosen offset angles will always be optically superior to a similar on-axis configuration. Therefore, for certain applications, Gregorian telescopes have desirable advantages over other telescope designs. He subsequently became the most successful London manufacturer of Gregorian telescopes, which were named after their original inventor. There are two different classes of two-mirror telescopes: Cassegrain telescopes and Gregorian telescopes. Origin Mid 18th century: named after James Gregory (1638–75), the Scottish mathematician who invented it. Definition of Gregorian telescope in US English: Gregorian telescope noun An early reflecting telescope in which light reflected from a concave elliptical secondary mirror passes through a hole in the primary mirror. It was rendered obsolete by the introduction of Newtonian and Cassegrain telescopes. Example sentencesExamples Therefore, for certain applications, Gregorian telescopes have desirable advantages over other telescope designs. He subsequently became the most successful London manufacturer of Gregorian telescopes, which were named after their original inventor. Mostly, he made mirrors for Gregorian telescopes, which were compact and produced upright images, suitable for royalty and nobility, who used them to look out their castle windows. An off-axis Gregorian telescope with correctly chosen offset angles will always be optically superior to a similar on-axis configuration. There are two different classes of two-mirror telescopes: Cassegrain telescopes and Gregorian telescopes. Origin Mid 18th century: named after James Gregory (1638–75), the Scottish mathematician who invented it.
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