Gregorian telescope
- noun
- /ɡrɪˈɡɔːriən ˈtɛlɪskoʊp/
- Specialized
:
telescopio gregoriano
- James Gregory invented the Gregorian telescope in the 17th century, revolutionizing astronomical observation.
Examples
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Unlike the Cassegrain design, the Gregorian telescope employs a concave secondary mirror.
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The observatory uses a Gregorian telescope to study distant galaxies.
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The Gregorian telescope was invented in the 17th century.
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Many astronomers prefer the Gregorian telescope for its design.
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The observatory uses a Gregorian telescope to study distant galaxies.
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James Gregory invented the Gregorian telescope in the 17th century, revolutionizing astronomical observation.
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Many astronomers prefer the Gregorian telescope for its unique optics.
Synonyms
3
7.0
A telescope that uses a large curved mirror to make distant objects look closer
1
5.5
A telescope that uses a large curved mirror to gather and focus light for looking
1
5.7
An instrument for looking at distant stars, planets, and galaxies
A reflecting telescope that uses two mirrors to send light back through an opening in the main mirror
Surface Forms
Morphology
Gregorian + telescope
The noun 'telescope' makes it clear that this is a type or subtype of telescope, so a learner who knows both words can infer it's a particular kind of telescope. However, 'Gregorian' is a proper adjective (derived from a name) and gives no information about the specific optical design (mirror shapes and light path), so the full technical meaning cannot be predicted from the constituents alone.
Etymology
Gregorian telescope is named after James Gregory, a Scottish scientist who invented it in the 1600s. He used two mirrors so light bounces back through the main mirror to make distant stars clearer, so the name now means this kind of telescope that uses mirrors.